CN108842606A - It is a kind of based on the seamless bridge expansion joint of phosphorus magnesium material and its construction method - Google Patents

It is a kind of based on the seamless bridge expansion joint of phosphorus magnesium material and its construction method Download PDF

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Publication number
CN108842606A
CN108842606A CN201810798165.6A CN201810798165A CN108842606A CN 108842606 A CN108842606 A CN 108842606A CN 201810798165 A CN201810798165 A CN 201810798165A CN 108842606 A CN108842606 A CN 108842606A
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China
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phosphorus
magnesium material
layer
sheet metal
phosphorus magnesium
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CN108842606B (en
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王闯
周永勤
杨恒
王秀
安光文
刘俊才
王敏
谭启辉
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Guizhou Phosphorus And Magnesium Materials Co Ltd
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Guizhou Phosphorus And Magnesium Materials Co Ltd
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/06—Arrangement, construction or bridging of expansion joints
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/06—Arrangement, construction or bridging of expansion joints
    • E01D19/067—Flat continuous joints cast in situ

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  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)

Abstract

The invention discloses a kind of seamless bridge expansion joints based on phosphorus magnesium material, including pave-load layer and cast-in-place concrete layer, phosphorus magnesium material boundary layer, sheet metal and the transverse steel and vertical reinforcement being arranged on the inside of phosphorus magnesium material boundary layer are provided between the pave-load layer and cast-in-place concrete layer, the sheet metal is arranged on the crack of cast-in-place concrete layer, gap between the transverse steel and pave-load layer, phosphorus magnesium material boundary layer, cast-in-place concrete layer and sheet metal is filled with phosphorus magnesia pulp layer, also discloses its construction method.Bridge expanssion joint retractility of the present invention is good, high-temperature stability is strong, low-temperature cracking-resistance is good, construction is simple, running time is short, early strength is high, maintenance maintenance is simple, durability is strong, waterproofness and cementability are strong, the comfortable steady, long service life of operation driving.Bridge expanssion joint of the present invention is simply fine and close, and installation notch are shallow, is not necessarily to anchor system, is tightly combined with road surface, smoothly, is applicable in the installation of various types of bridge expanssion joints or studies for a second time courses one has flunked.

Description

It is a kind of based on the seamless bridge expansion joint of phosphorus magnesium material and its construction method
Technical field
The invention belongs to road and bridge technical field of bridge engineering more particularly to a kind of seamless bridge based on phosphorus magnesium material are flexible Seam and its construction method.
Background technique
Bridge expanssion joint：It refers to meet the requirement of bridge floor deformation, usually between two beam-ends, between beam-ends and abutment Or expansion joint is set in the articulated position of bridge.It is required that expansion joint it is parallel, perpendicular to the both direction of bridge axes, can be from Solid and reliable by stretching, vehicle driving is out-of-date to answer smoothly, without kick and noise；It wants to prevent rainwater and rubbish soil from penetrating into resistance Plug；Installation, check, maintenance, eliminate dirt will simple and convenient.At setting expansion joint, railing will be disconnected with deck paving.
The effect of bridge expanssion joint：It is to adjust between the superstructure as caused by vehicular load and bridge construction material Displacement and connection.The telescopic device of skew bridge is once destroyed, and will seriously affect speed, comfort and the safety of driving, very To causing traffic safety accident.Bridge expanssion joint generally has dock, steel supporting type, combined shear formula (board-like), modulus branch Formula and elastic device are held, but not only structure is complicated for the above these types of bridge expanssion joint, but also higher cost.
Use pitch, modified pitch or thermoplastic body high to exist for the TST lastics bridge gapless expansion joint of cementitious matter The performance shortcomings such as temperature stability deficiency and low-temperature cracking-resistance be not good enough, and need dedicated heating, melting unit to cementitious matter and building stones Heated, construction technology is complex and not environmentally.
Magnesium phosphate cement (Magnesiumphosphatecement, abbreviation MPC) is that a kind of novel early-strong-fast-hard is inorganic Cementitious material, the advantages of having cement, ceramics and refractory material concurrently, have low toxicity, good biocompatibility, early strength high, viscous The strong feature of power is tied, compact structure, cohesive force be strong after aquation, good corrosion resistance, is a kind of to have very much researching value, energy conservation and environmental protection New green environment protection material.But the pertinent literature report that magnesium phosphate cement is applied on bridge expanssion joint is not seen also at present. That there are high-temperature stabilities in order to solve current bridge expanssion joint is insufficient by the present inventor, low-temperature cracking-resistance is not good enough, construction is complicated, comes into operation Time is long, hardly possible maintenance maintenance, early strength is low, durability is poor, waterproofness and cementability are poor, operation driving is uncomfortable steadily, makes With the service life it is low the problems such as, magnesium phosphate cement is made further research.
Summary of the invention
The present invention is in order to solve the above technical problems, providing a kind of seamless bridge expansion joint based on phosphorus magnesium material and its applying Work method.That the present invention is based on the seamless bridge expansion joint retractilities of phosphorus magnesium material is good, high-temperature stability is strong, low-temperature cracking-resistance is good, Construction is simple, running time are short, early strength is high, maintenance maintenance is simple, durability is strong, waterproofness and cementability are strong, operation row The comfortable steady, long service life of vehicle.
In order to reach purpose described above, the present invention uses following technical scheme：
A kind of seamless bridge expansion joint based on phosphorus magnesium material, including pave-load layer and cast-in-place concrete layer, mat formation described Phosphorus magnesium material boundary layer, sheet metal are provided between layer and cast-in-place concrete layer and are arranged on the inside of phosphorus magnesium material boundary layer Transverse steel and vertical reinforcement, the sheet metal are arranged on the crack of cast-in-place concrete layer, the transverse steel and pave-load layer, Gap between phosphorus magnesium material boundary layer, cast-in-place concrete layer and sheet metal is filled with phosphorus magnesia pulp layer.
Further, the transverse steel is rectangular, and the vertical reinforcement setting is surveyed in the transverse steel, this is vertical Reinforcing bar is connect by steel wire with transverse steel.
Further, the diameter of the transverse steel and vertical reinforcement is 16mm, and the vertical reinforcement at least two, And the distance between reinforcing bar is 200mm in the same direction.
Further, cylinder foams are installed at sheet metal between the crack of the cast-in-place concrete layer.
Further, it is connected between the sheet metal and cast-in-place concrete layer by steel nail.
Further, at least two layers of the sheet metal is connected between the sheet metal and sheet metal by the steel nail.
Further, a kind of construction method at the seamless bridge expansion joint as described above based on phosphorus magnesium material, including Following steps：
1. preparing before construction：Understand structure, stroke and the environment temperature of bridge, calculate construction width, depth and area, It determines construction notch size, gets out Work machine and material；
2. the processing of pave-load layer：The construction area for indicating pave-load layer, stamps waterline in the position of saw kerf, uses pavement cutting machine Position is cut and crossed along the line, rubble and disintegrating slag in slot is cleared up in time after waterline internal recessing, fluting with pneumatic pick machine, with air pressure Contracting machine purging notch makes to make slot bottom leak out cast-in-place concrete layer without surface dust and discrete particles in slot；
3. installing cylinder foams：Cylinder foams are installed along the cast-in-place concrete layer seam of bridge；
4. brushing phosphorus magnesium material boundary layer：When the fluidity of phosphorus magnesium material interfacial agents is 280 ± 10mm, setting time 20 When~60min, phosphorus magnesium material interfacial agents are equably brushed in the surrounding in slot with brush；
5. installing sheet metal：Sheet metal is installed in the position of seam after the boundary layer initial set of phosphorus magnesium material, sheet metal is made to be paved with slot The position of mouth inseam；
6. assembling reinforcement：It is with steel wire that transverse steel is good with vertical reinforcement binding and fixing；
7. pouring phosphorus magnesia slurry：Phosphorus magnesia slurry is configured, when the fluidity of phosphorus magnesia slurry is 240 ± 10mm, setting time is When 20~60min, phosphorus magnesia is starched in 2min and is added in stirring conveying integrated machine, at the uniform velocity 1~3.5min of stirring, will be stirred Phosphorus magnesia slurry be transferred in conveying bucket, lowest point starts to pour phosphorus magnesia slurry in conveying bucket, pours on one side, on one side with vibration Tamper is consolidated, and the absolute altitude of the absolute altitude poured and phosphorus magnesium material boundary layer is contour；
8. conserving：Moisture-keeping maintaining, curing time 1 are covered with plastic film after 7. phosphorus magnesia that step pours starches initial set ~2h；
9. coming into operation：It constructs after 2~4h, starts the use that is open to traffic.
Further, step 4., the phosphorus magnesium material layer with a thickness of 0.1~0.3mm.
Further, step 4., the phosphorus magnesium material interfacial agents are made of raw material from the following weight：Magnesium phosphate cement 80~120 parts, 2~15 parts of additive, 10~20 parts of admixture, 80~120 parts of emulsified asphalt, preparation method are：It will be above-mentioned Raw material, which is sent into blender, stirs 3~7min, and it is uniformly mixed obtained that water is added；The dosage of the water is that phosphorus magnesium material interfacial agents are total The 5~10% of weight.
Further, step 7., phosphorus magnesia slurry is made of raw material from the following weight：Magnesium phosphate cement 80~ 120 parts, 2~15 parts of additive, 10~20 parts of admixture, 80~120 parts of emulsified asphalt, 250~400 parts of fine aggregate, preparation Method is：Above-mentioned raw materials are sent into blender and stir 3~7min, it is uniformly mixed obtained that water is added；The dosage of the water is phosphorus Magnesia starches the 5~10% of total weight.
Further, the magnesium phosphate cement is dead burned magnesia and monoammonium phosphate according to 1~4：1 ratio mixes It arrives.
Further, the dead burned magnesia is phosphorus magnesium mine by grinding acquisition, magnesia after 1600 DEG C or more calcinings Content is 88~95%, and fineness is 80~400 mesh；The nutrient of the monoammonium phosphate is 60~400 mesh not less than 58%, fineness. The nutrient of the monoammonium phosphate is with N and P2O5Total content meter.
Further, the additive is borax, defoaming agent and water-reducing agent, and the ratio of borax, defoaming agent and water-reducing agent =4：1~2：1.
Further, the purity of the borax is calculated in mass percent not less than 95%；The defoaming agent is organic silicon Powder defoaming agent.
Further, the admixture is the mixture of flyash and metakaolin, and the ratio of flyash and metakaolin Example=2~4：1.
Further, the fineness of the flyash is 200~1600 mesh and grade is not less than second level；The metakaolin is In 800 DEG C or more kaolin calcined, fineness is 800~1600 mesh.
Further, the emulsified asphalt oil content is 40~70%.
Further, the aggregate is fine work mechanism sandstone, and partial size is 0~2.36mm.
Fluidity of the present invention is measured with the divergence of mortar, and detection method is：According to testing standard, by sand Slurry pours into the tubulose test mould of predetermined size, then lifts, and mortar flows freely, and spreads into circle out, circular diameter is It is fluidity.
Aggregate used in the present invention is the partial size that sandstone has passed through that the processes such as screening, shaping and dedusting obtain in process For 0~2.36mm product, the gradation of sandstone is made to meet quality standard, aggregate grain shape is in cube multiple edge body, and gap can be effectively reduced Rate increases bulk density and compression strength, can substantially reduce the dosage of magnesium phosphate cement, while the powder containing quantity in sandstone can obtain Effectively control.
Monoammonium phosphate and borax used in the present invention are industrial grade product.
Present invention construction mechanical equipment used and purposes are as shown in table 1 below：
Table 1
The present invention forms multistage space dual-network structural system after emulsified asphalt is added in magnesium phosphate cement, by having The collective effect of two kinds of binding materials of solidification of the bonding and inorganic coagulation material magnesium phosphate cement of machine cementitious material pitch constitutes multiple With joint efforts, make magnesium phosphate cement and Emulsified Asphalt Mixture become one it is solid, not only rich in rigid but also flexible entirety, it with Rigidity is big but is easy to the magnesium phosphate cement concrete difference of brittle break, also different from the flexibility of plain asphalt mixture, property It can fall between, to ensure that stroke needed for bridge expanssion joint.
Magnesium phosphate cement fast solidifying of the present invention, early strength are high, ensure that bridge expanssion joint has constructed 2 ~4h can come into operation.
The method of the present invention can construct under 5 DEG C of low temperature, and constructing operation is easy, and it is anti-that 2h axle casing expansion joint is completed in construction Compressive Strength reaches 30MPa or more, and flexural strength reaches 8MPa or more；Construction is completed 3d axle casing expansion joint compression strength and is reached 50MPa or more, flexural strength reach 20MPa or more, produce after the completion of work progress and construction almost without volatile organic matter It is raw.
Since present invention employs above technical schemes, have the advantages that：
(1) phosphorus magnesium material early stage prepared by the present invention and later strength are high, setting time is controllable, has excellent performance.It selects High density magnesia and monoammonium phosphate, monoammonium phosphate and magnesia reaction rate are faster than the monopotassium phosphate of same type, monosodium phosphate, The intensity prepared using monoammonium phosphate is higher, and is classified as 1~4 using mass ratio between magnesia and monoammonium phosphate：1, magnesia It is excessive, guarantee that phosphate component is reacted thoroughly completely, the complete magnesium oxide particle of unreacted, its own intensity is high, as aggregate, produces Raw micro aggregate effect, further increases the intensity of phosphorus magnesium material, magnesium oxide particle fineness effect between 80~400 mesh is optimal. The bubble generated during dephosphorization magnesium material mix is removed using defoaming agent, improves compactness, improves intensity.Using water-reducing agent, mention The fluidity of high phosphorus magnesium material lowers water consumption, guarantees while improving phosphorus magnesium material workability high-intensitive.Using most there is slow setting The borax of effect adjusts the setting time of phosphorus magnesium material, effect in range is best being recommended to use, and right by adjusting volume Intensity negative effect is small.Using the admixture with reactivity, spherical shape is presented in flyash and metakaolin, flyash, is risen To filling microscopic voids, while phosphorus magnesium material workability is improved, so that phosphorus magnesium material compactness improves, fineness of pulverized-coal ash is 200 The effect played within the scope of~1600 mesh is best；And in the activated aluminum component in flyash, metakaolin and phosphorus magnesium material It reacts between phosphate and magnesia, improves phosphorus magnesium material high temperature resistance, activated aluminum component especially in metakaolin More, for metakaolin fineness using between 800~1600 mesh, activity is high, and excessively high fineness is also avoided to adversely affect workability.Using By the fine work sand after screening, shaping, the corner angle of sand particle are reduced, phosphorus magnesium material workability is further increased.Pass through Toughness, ductility that emulsified asphalt improves phosphorus magnesium material are mixed, metamorphosis is played, the deformation of seamless bridge expansion joint is solved and asks Topic.
(2) phosphorus magnesium material interfacial agents of the present invention and phosphorus magnesia slurry are the material of aqueous polymer-type, are to be easy to apply In the material of bridge expanssion joint；It constructs in bridge expanssion joint, good, high (the 2h compression strength of early strength with infiltration wetability 30MPa or more, flexural strength 8MPa or more), later strength it is strong (3d compression strength 50MPa or more, flexural strength 20MPa with On), closure adhesive force is strong, quick-drying is wear-resisting, resistance to water logging solarization, it is non-slip, can construct at low ambient temperatures, is easy for construction, at The overall merits such as sheet is low, is easily handled, especially extremely low VOC value (almost without).
(2) the phosphorus magnesium material interfacial agents used in the present invention and phosphorus magnesia slurry main body are water base, non-ignitable not quick-fried, nontoxic nothing Evil, therefore the environmental protection given after construction site security reliability, the health care of construction personnel, construction brings the knot of affirmative Fruit, and phosphorus magnesium material interfacial agents and phosphorus magnesia slurry preparation process are simple, can be carried out continuous preparation and construct, is time-consuming short, and prepare Process environmental protection and energy saving.
(3) phosphorus magnesium material interfacial agents of the present invention are identical with phosphorus magnesia slurry material composition, and difference is only in that the dosage of aggregate, Wherein, phosphorus magnesium material interfacial agents and phosphorus magnesia slurry can form sull, oxide on the surface of contactant and own face Film has good associativity, and therefore, all junctions being connected with phosphorus magnesium material boundary layer and phosphorus magnesia slurry will form very Strong cohesive force.
(4) connection between sheet metal of the present invention and cast-in-place concrete layer, sheet metal and sheet metal is connected with steel nail, that is, is used Steel nail is directly incorporated into cast-in-place concrete layer, simple fine and close, will not leave behind gap.
(5) that the present invention is based on the seamless bridge expansion joint retractilities of phosphorus magnesium material is good, high-temperature stability is strong, low-temperature cracking-resistance Good, construction is simple, running time short (starting 3h or so since construction, can be open to traffic use), early strength is high, maintenance maintenance is simple Single, durability is by force, waterproofness and cementability are strong, operation driving is comfortable steadily, (service life is much higher than modified drip for long service life Green expansion joint).
(6) the present invention is based on the installation notch at the seamless bridge expansion joint of phosphorus magnesium material are shallow, it is not necessarily to anchor system, with road surface It is tightly combined, smoothly.
(7) seamless bridge expansion joint easy construction of the invention is flexible, and open driving is comfortable, and maintenance is simple, cheap, It is good in economic efficiency.
(8) seamless bridge expansion joint of the invention is applicable in the installation of various types of bridge expanssion joints or studies for a second time courses one has flunked, moreover, right Requirement can be met by being added without reinforcing bar in the middle-size and small-size bridge of small traffic volume, easy for construction, save road construction or finishing Construction cost.
Detailed description of the invention
In order to illustrate more clearly of present example or technical solution in the prior art, to embodiment or will show below There is in technical description required attached drawing do simply to introduce, it should be apparent that, the accompanying drawings in the following description is only the present invention Some examples to those skilled in the art, can also be attached according to these under the premise of not paying creativeness Figure obtains other attached drawings：
Fig. 1 is that the present invention is based on the structural schematic diagrams at the seamless bridge expansion joint of phosphorus magnesium material；
Fig. 2 is that the present invention is based on the non-reinforced structural schematic diagrams in seamless bridge expansion joint of phosphorus magnesium material；
Fig. 3 is that the present invention is based on the construction flow charts at the seamless bridge expansion joint of phosphorus magnesium material.
In attached drawing：1- pave-load layer, 2- phosphorus magnesium material boundary layer, 3- transverse steel, 4- vertical reinforcement, 5- phosphorus magnesia pulp layer, 6- cast-in-place concrete layer, 7- sheet metal, 8- cylinder foams, 9- steel nail.
Specific embodiment
Specific embodiments of the present invention will be described in further detail below, but the invention is not limited to these realities Mode is applied, it is claimed to still fall within the claims in the present invention for any improvement or replacement on the present embodiment essence spirit Range.
Embodiment 1
As shown in Figure 1, a kind of seamless bridge expansion joint based on phosphorus magnesium material, including pave-load layer 1 and cast-in-place concrete layer 6, it is provided with phosphorus magnesium material boundary layer 2, sheet metal 7 between the pave-load layer 1 and cast-in-place concrete layer 6 and is arranged in phosphorus magnesium The transverse steel 3 and vertical reinforcement 4 of 2 inside of material interface layer, the sheet metal 7 are arranged on the crack of cast-in-place concrete layer 6, Gap filling between the transverse steel 3 and pave-load layer 1, phosphorus magnesium material boundary layer 2, cast-in-place concrete layer 6 and sheet metal 7 There is phosphorus magnesia pulp layer 5.
Further, the transverse steel 3 is rectangular, and the setting of vertical reinforcement 4 is surveyed in the transverse steel 3, should Vertical reinforcement 4 is connect by steel wire with transverse steel 3；The diameter of the transverse steel 3 and vertical reinforcement 4 is 16mm, described Vertical reinforcement 4 at least two, and the distance between reinforcing bar is 200mm in the same direction；It is leaned between the crack of the cast-in-place concrete layer 6 Cylinder foams 8 are installed at nearly sheet metal 7；It is connected between the sheet metal 7 and cast-in-place concrete layer 6 by steel nail 9；It is described It at least two layers of sheet metal 7, is connected between the sheet metal 7 and sheet metal 7 by the steel nail 9.
A kind of construction method for weighing the seamless bridge expansion joint described above based on phosphorus magnesium material, includes the following steps：
1. preparing before construction：Understand structure, stroke and the environment temperature of bridge, calculate construction width, depth and area, It determines construction notch size, gets out Work machine and material；
2. the processing of pave-load layer 1：The construction area for indicating pave-load layer 1, stamps waterline in the position of saw kerf, is cut with road surface Position is cut and crossed along machine, rubble and disintegrating slag in slot is cleared up in time after waterline internal recessing, fluting with pneumatic pick machine, uses air Compressor purging notch makes to make slot bottom leak out cast-in-place concrete layer 6 without surface dust and discrete particles in slot；
3. installing cylinder foams 8：Interior installation cylinder foams 8 are stitched along the cast-in-place concrete layer 6 of bridge；
4. brushing phosphorus magnesium material boundary layer 2：When the fluidity of phosphorus magnesium material interfacial agents is 280 ± 10mm, setting time is When 20min, phosphorus magnesium material interfacial agents are equably brushed in the surrounding in slot with brush；
The phosphorus magnesium material layer 2 with a thickness of 0.1mm；The phosphorus magnesium material interfacial agents by following parts by weight raw material system At：80 parts of magnesium phosphate cement, 2 parts of additive, 10 parts of admixture, 80 parts of emulsified asphalt, preparation method are：Above-mentioned raw materials are sent Enter and stir 3min in blender, it is uniformly mixed obtained that water is added；The dosage of the water is phosphorus magnesium material interfacial agents total weight 5%；
5. installing sheet metal 7：Sheet metal 7 is installed in the position of seam after 2 initial set of phosphorus magnesium material boundary layer, spreads sheet metal 7 The position of tankful mouth inseam；
6. assembling reinforcement：It is with steel wire that transverse steel 3 and 4 binding and fixing of vertical reinforcement is good；
7. pouring phosphorus magnesia slurry：Phosphorus magnesia slurry is configured, when the fluidity of phosphorus magnesia slurry is 240 ± 10mm, setting time is When 20min, phosphorus magnesia is starched in 2min and is added in stirring conveying integrated machine, at the uniform velocity stirring 1min, the phosphorus magnesia that will be stirred Slurry is transferred in conveying bucket, and lowest point starts to pour phosphorus magnesia slurry in conveying bucket, is poured, is carried out on one side with vibrating spear on one side Tamping, the absolute altitude of the absolute altitude poured and phosphorus magnesium material boundary layer 2 are contour；
The phosphorus magnesia slurry is made of raw material from the following weight：80 parts of magnesium phosphate cement, 2 parts of additive, admixture 10 Part, 80 parts of emulsified asphalt, 250 parts of fine aggregate, preparation method are：Above-mentioned raw materials are sent into blender and stir 3min, are added Water, which is uniformly mixed, to be made；The dosage of the water is that phosphorus magnesia starches the 5% of total weight；
8. conserving：Moisture-keeping maintaining is covered with plastic film after 7. phosphorus magnesia that step pours starches initial set, curing time is 1h；
9. coming into operation：It constructs after 2h, starts the use that is open to traffic.Process flow chart is as shown in Figure 3.
Further, the magnesium phosphate cement is dead burned magnesia and monoammonium phosphate according to 1：1 ratio is mixed to get；Institute Stating dead burned magnesia is phosphorus magnesium mine by grinding acquisition, content of magnesia 88%, fineness 80 after 1600 DEG C or more calcinings Mesh；The nutrient of the monoammonium phosphate is 60 mesh not less than 58%, fineness；The additive be borax, defoaming agent and water-reducing agent, and Ratio=4 of borax, defoaming agent and water-reducing agent：1：1；The purity of the borax is calculated in mass percent not less than 95%；It is described Defoaming agent is organic silicon powder defoaming agent；The admixture be flyash and metakaolin mixture, and flyash and partially Kaolinic ratio=2：1；The fineness of the flyash is 200 mesh and grade is not less than second level；The metakaolin is 800 DEG C or more calcined, fineness be 800 mesh kaolin；The emulsified asphalt oil content is 40%；The aggregate is fine work mechanism Sandstone, partial size are 0~2.36mm.
Embodiment 2
As shown in Figure 1, a kind of seamless bridge expansion joint based on phosphorus magnesium material, including pave-load layer 1 and cast-in-place concrete layer 6, it is provided with phosphorus magnesium material boundary layer 2, sheet metal 7 between the pave-load layer 1 and cast-in-place concrete layer 6 and is arranged in phosphorus magnesium The transverse steel 3 and vertical reinforcement 4 of 2 inside of material interface layer, the sheet metal 7 are arranged on the crack of cast-in-place concrete layer 6, Gap filling between the transverse steel 3 and pave-load layer 1, phosphorus magnesium material boundary layer 2, cast-in-place concrete layer 6 and sheet metal 7 There is phosphorus magnesia pulp layer 5.
Further, the transverse steel 3 is rectangular, and the setting of vertical reinforcement 4 is surveyed in the transverse steel 3, should Vertical reinforcement 4 is connect by steel wire with transverse steel 3；The diameter of the transverse steel 3 and vertical reinforcement 4 is 16mm, described Vertical reinforcement 4 at least two, and the distance between reinforcing bar is 200mm in the same direction；It is leaned between the crack of the cast-in-place concrete layer 6 Cylinder foams 8 are installed at nearly sheet metal 7；It is connected between the sheet metal 7 and cast-in-place concrete layer 6 by steel nail 9；It is described It at least two layers of sheet metal 7, is connected between the sheet metal 7 and sheet metal 7 by the steel nail 9.
A kind of construction method for weighing the seamless bridge expansion joint described above based on phosphorus magnesium material, includes the following steps：
1. preparing before construction：Understand structure, stroke and the environment temperature of bridge, calculate construction width, depth and area, It determines construction notch size, gets out Work machine and material；
2. the processing of pave-load layer 1：The construction area for indicating pave-load layer 1, stamps waterline in the position of saw kerf, is cut with road surface Position is cut and crossed along machine, rubble and disintegrating slag in slot is cleared up in time after waterline internal recessing, fluting with pneumatic pick machine, uses air Compressor purging notch makes to make slot bottom leak out cast-in-place concrete layer 6 without surface dust and discrete particles in slot；
3. installing cylinder foams 8：Interior installation cylinder foams 8 are stitched along the cast-in-place concrete layer 6 of bridge；
4. brushing phosphorus magnesium material boundary layer 2：When the fluidity of phosphorus magnesium material interfacial agents is 280 ± 10mm, setting time is When 60min, phosphorus magnesium material interfacial agents are equably brushed in the surrounding in slot with brush；
The phosphorus magnesium material layer 2 with a thickness of 0.3mm；The phosphorus magnesium material interfacial agents by following parts by weight raw material system At：120 parts of magnesium phosphate cement, 15 parts of additive, 20 parts of admixture, 120 parts of emulsified asphalt, preparation method are：By above-mentioned original Material, which is sent into blender, stirs 7min, and it is uniformly mixed obtained that water is added；The dosage of the water is phosphorus magnesium material interfacial agents total weight 10%；
5. installing sheet metal 7：Sheet metal 7 is installed in the position of seam after 2 initial set of phosphorus magnesium material boundary layer, spreads sheet metal 7 The position of tankful mouth inseam；
6. assembling reinforcement：It is with steel wire that transverse steel 3 and 4 binding and fixing of vertical reinforcement is good；
7. pouring phosphorus magnesia slurry：Phosphorus magnesia slurry is configured, when the fluidity of phosphorus magnesia slurry is 240 ± 10mm, setting time is When 60min, phosphorus magnesia is starched in 2min and is added in stirring conveying integrated machine, at the uniform velocity stirring 3.5min, the phosphorus magnesium that will be stirred Mortar is transferred in conveying bucket, and lowest point starts to pour phosphorus magnesia slurry in conveying bucket, is poured on one side, on one side with vibrating spear into Row tamping, the absolute altitude of the absolute altitude poured and phosphorus magnesium material boundary layer 2 are contour；
The phosphorus magnesia slurry is made of raw material from the following weight：120 parts of magnesium phosphate cement, 15 parts of additive, admixture 20 parts, 120 parts of emulsified asphalt, 400 parts of fine aggregate, preparation method are：Above-mentioned raw materials are sent into blender and stir 7min, are added It is uniformly mixed obtained to enter water；The dosage of the water is that phosphorus magnesia starches the 10% of total weight；
8. conserving：Moisture-keeping maintaining is covered with plastic film after 7. phosphorus magnesia that step pours starches initial set, curing time is 2h；
9. coming into operation：It constructs after 4h, starts the use that is open to traffic.Process flow chart is as shown in Figure 3.
Further, the magnesium phosphate cement is dead burned magnesia and monoammonium phosphate according to 4：1 ratio is mixed to get；Institute Stating dead burned magnesia is phosphorus magnesium mine by grinding acquisition, content of magnesia 95%, fineness 400 after 1600 DEG C or more calcinings Mesh；The nutrient of the monoammonium phosphate is 400 mesh not less than 58%, fineness；The additive be borax, defoaming agent and water-reducing agent, And ratio=4 of borax, defoaming agent and water-reducing agent：2：1；The purity of the borax is calculated in mass percent not less than 95%；Institute Stating defoaming agent is organic silicon powder defoaming agent；The admixture be flyash and metakaolin mixture, and flyash and Ratio=4 of metakaolin：1；The fineness of the flyash is 1600 mesh and grade is not less than second level；The metakaolin be 800 DEG C or more kaolin calcined, fineness is 1600 mesh；The emulsified asphalt oil content is 70%；The aggregate is fine work Mechanism sandstone, partial size are 0.4~2.36mm.
Embodiment 3
As shown in Figure 1, a kind of seamless bridge expansion joint based on phosphorus magnesium material, including pave-load layer 1 and cast-in-place concrete layer 6, it is provided with phosphorus magnesium material boundary layer 2, sheet metal 7 between the pave-load layer 1 and cast-in-place concrete layer 6 and is arranged in phosphorus magnesium The transverse steel 3 and vertical reinforcement 4 of 2 inside of material interface layer, the sheet metal 7 are arranged on the crack of cast-in-place concrete layer 6, Gap filling between the transverse steel 3 and pave-load layer 1, phosphorus magnesium material boundary layer 2, cast-in-place concrete layer 6 and sheet metal 7 There is phosphorus magnesia pulp layer 5.
Further, the transverse steel 3 is rectangular, and the setting of vertical reinforcement 4 is surveyed in the transverse steel 3, should Vertical reinforcement 4 is connect by steel wire with transverse steel 3；The diameter of the transverse steel 3 and vertical reinforcement 4 is 16mm, described Vertical reinforcement 4 at least two, and the distance between reinforcing bar is 200mm in the same direction；It is leaned between the crack of the cast-in-place concrete layer 6 Cylinder foams 8 are installed at nearly sheet metal 7；It is connected between the sheet metal 7 and cast-in-place concrete layer 6 by steel nail 9；It is described It at least two layers of sheet metal 7, is connected between the sheet metal 7 and sheet metal 7 by the steel nail 9.
A kind of construction method for weighing the seamless bridge expansion joint described above based on phosphorus magnesium material, includes the following steps：
1. preparing before construction：Understand structure, stroke and the environment temperature of bridge, calculate construction width, depth and area, It determines construction notch size, gets out Work machine and material；
2. the processing of pave-load layer 1：The construction area for indicating pave-load layer 1, stamps waterline in the position of saw kerf, is cut with road surface Position is cut and crossed along machine, rubble and disintegrating slag in slot is cleared up in time after waterline internal recessing, fluting with pneumatic pick machine, uses air Compressor purging notch makes to make slot bottom leak out cast-in-place concrete layer 6 without surface dust and discrete particles in slot；
3. installing cylinder foams 8：Interior installation cylinder foams 8 are stitched along the cast-in-place concrete layer 6 of bridge；
4. brushing phosphorus magnesium material boundary layer 2：When the fluidity of phosphorus magnesium material interfacial agents is 280 ± 10mm, setting time is When 25min, phosphorus magnesium material interfacial agents are equably brushed in the surrounding in slot with brush；
The phosphorus magnesium material layer 2 with a thickness of 0.15mm；The phosphorus magnesium material interfacial agents by following parts by weight raw material system At：85 parts of magnesium phosphate cement, 3 parts of additive, 11 parts of admixture, 85 parts of emulsified asphalt, preparation method are：Above-mentioned raw materials are sent Enter and stir 4min in blender, it is uniformly mixed obtained that water is added；The dosage of the water is phosphorus magnesium material interfacial agents total weight 6%；
5. installing sheet metal 7：Sheet metal 7 is installed in the position of seam after 2 initial set of phosphorus magnesium material boundary layer, spreads sheet metal 7 The position of tankful mouth inseam；
6. assembling reinforcement：It is with steel wire that transverse steel (3) and vertical reinforcement (4) binding and fixing is good；
7. pouring phosphorus magnesia slurry：Phosphorus magnesia slurry is configured, when the fluidity of phosphorus magnesia slurry is 240 ± 10mm, setting time is When 25min, phosphorus magnesia is starched in 2min and is added in stirring conveying integrated machine, at the uniform velocity stirring 1.5min, the phosphorus magnesium that will be stirred Mortar is transferred in conveying bucket, and lowest point starts to pour phosphorus magnesia slurry in conveying bucket, is poured on one side, on one side with vibrating spear into Row tamping, the absolute altitude of the absolute altitude poured and phosphorus magnesium material boundary layer 2 are contour；
The phosphorus magnesia slurry is made of raw material from the following weight：85 parts of magnesium phosphate cement, 3 parts of additive, admixture 12 Part, 85 parts of emulsified asphalt, 280 parts of fine aggregate, preparation method are：Above-mentioned raw materials are sent into blender and stir 4min, are added Water, which is uniformly mixed, to be made；The dosage of the water is that phosphorus magnesia starches the 6% of total weight；
8. conserving：Moisture-keeping maintaining is covered with plastic film after 7. phosphorus magnesia that step pours starches initial set, curing time is 1.2h；
9. coming into operation：It constructs after 2.2h, starts the use that is open to traffic.Process flow chart is as shown in Figure 3.
Further, the magnesium phosphate cement is dead burned magnesia and monoammonium phosphate according to 1.5：1 ratio is mixed to get； The dead burned magnesia is that phosphorus magnesium mine grinding after calcining at 1600 DEG C or more obtains, content of magnesia 89%, and fineness is 100 mesh；The nutrient of the monoammonium phosphate is 100 mesh not less than 58%, fineness；The additive is borax, defoaming agent and diminishing Agent, and ratio=4 of borax, defoaming agent and water-reducing agent：1.2：1；The purity of the borax, which is calculated in mass percent, to be not less than 95%；The defoaming agent is organic silicon powder defoaming agent；The admixture is the mixture of flyash and metakaolin, and powder Ratio=2.2 of coal ash and metakaolin：1；The fineness of the flyash is 300 mesh and grade is not less than second level；It is described higher Ridge soil is in 800 DEG C or more kaolin calcined, fineness is 900 mesh；The emulsified asphalt oil content is 45%；The aggregate For fine work mechanism sandstone, partial size is 0.2~2.36mm.
Embodiment 4
As shown in Figure 1, a kind of seamless bridge expansion joint based on phosphorus magnesium material, including pave-load layer 1 and cast-in-place concrete layer 6, it is provided with phosphorus magnesium material boundary layer 2, sheet metal 7 between the pave-load layer 1 and cast-in-place concrete layer 6 and is arranged in phosphorus magnesium The transverse steel 3 and vertical reinforcement 4 of 2 inside of material interface layer, the sheet metal 7 are arranged on the crack of cast-in-place concrete layer 6, Gap filling between the transverse steel 3 and pave-load layer 1, phosphorus magnesium material boundary layer 2, cast-in-place concrete layer 6 and sheet metal 7 There is phosphorus magnesia pulp layer 5.
Further, the transverse steel 3 is rectangular, and the setting of vertical reinforcement 4 is surveyed in the transverse steel 3, should Vertical reinforcement 4 is connect by steel wire with transverse steel 3；The diameter of the transverse steel 3 and vertical reinforcement 4 is 16mm, described Vertical reinforcement 4 at least two, and the distance between reinforcing bar is 200mm in the same direction；It is leaned between the crack of the cast-in-place concrete layer 6 Cylinder foams 8 are installed at nearly sheet metal 7；It is connected between the sheet metal 7 and cast-in-place concrete layer 6 by steel nail 9；It is described It at least two layers of sheet metal 7, is connected between the sheet metal 7 and sheet metal 7 by the steel nail 9.
A kind of construction method for weighing the seamless bridge expansion joint described above based on phosphorus magnesium material, includes the following steps：
1. preparing before construction：Understand structure, stroke and the environment temperature of bridge, calculate construction width, depth and area, It determines construction notch size, gets out Work machine and material；
2. the processing of pave-load layer 1：The construction area for indicating pave-load layer 1, stamps waterline in the position of saw kerf, is cut with road surface Position is cut and crossed along machine, rubble and disintegrating slag in slot is cleared up in time after waterline internal recessing, fluting with pneumatic pick machine, uses air Compressor purging notch makes to make slot bottom leak out cast-in-place concrete layer 6 without surface dust and discrete particles in slot；
3. installing cylinder foams 8：Interior installation cylinder foams 8 are stitched along the cast-in-place concrete layer 6 of bridge；
4. brushing phosphorus magnesium material boundary layer 2：When the fluidity of phosphorus magnesium material interfacial agents is 280 ± 10mm, setting time is When 55min, phosphorus magnesium material interfacial agents are equably brushed in the surrounding in slot with brush；
The phosphorus magnesium material layer 2 with a thickness of 0.25mm；The phosphorus magnesium material interfacial agents by following parts by weight raw material system At：110 parts of magnesium phosphate cement, 14 parts of additive, 18 parts of admixture, 110 parts of emulsified asphalt, preparation method are：By above-mentioned original Material, which is sent into blender, stirs 6min, and it is uniformly mixed obtained that water is added；The dosage of the water is phosphorus magnesium material interfacial agents total weight 9%；
5. installing sheet metal 7：Sheet metal 7 is installed in the position of seam after 2 initial set of phosphorus magnesium material boundary layer, spreads sheet metal 7 The position of tankful mouth inseam；
6. assembling reinforcement：It is with steel wire that transverse steel 3 and 4 binding and fixing of vertical reinforcement is good；
7. pouring phosphorus magnesia slurry：Phosphorus magnesia slurry is configured, when the fluidity of phosphorus magnesia slurry is 240 ± 10mm, setting time is When 55min, phosphorus magnesia is starched in 2min and is added in stirring conveying integrated machine, at the uniform velocity stirring 3.2min, the phosphorus magnesium that will be stirred Mortar is transferred in conveying bucket, and lowest point starts to pour phosphorus magnesia slurry in conveying bucket, is poured on one side, on one side with vibrating spear into Row tamping, the absolute altitude of the absolute altitude poured and phosphorus magnesium material boundary layer 2 are contour；
The phosphorus magnesia slurry is made of raw material from the following weight：110 parts of magnesium phosphate cement, 14 parts of additive, admixture 18 parts, 110 parts of emulsified asphalt, 350 parts of fine aggregate, preparation method are：Above-mentioned raw materials are sent into blender and stir 6min, are added It is uniformly mixed obtained to enter water；The dosage of the water is that phosphorus magnesia starches the 9% of total weight；
8. conserving：Moisture-keeping maintaining is covered with plastic film after 7. phosphorus magnesia that step pours starches initial set, curing time is 1.8h；
9. coming into operation：It constructs after 3.9h, starts the use that is open to traffic.Process flow chart is as shown in Figure 3.
Further, the magnesium phosphate cement is dead burned magnesia and monoammonium phosphate according to 3.5：1 ratio is mixed to get； The dead burned magnesia is that phosphorus magnesium mine grinding after calcining at 1600 DEG C or more obtains, content of magnesia 94%, and fineness is 350 mesh；The nutrient of the monoammonium phosphate is 350 mesh not less than 58%, fineness；The additive is borax, defoaming agent and diminishing Agent, and ratio=4 of borax, defoaming agent and water-reducing agent：1.8：1；The purity of the borax, which is calculated in mass percent, to be not less than 95%；The defoaming agent is organic silicon powder defoaming agent；The admixture is the mixture of flyash and metakaolin, and powder Ratio=3.7 of coal ash and metakaolin：1；The fineness of the flyash is 1500 mesh and grade is not less than second level；It is described higher Ridge soil is in 800 DEG C or more kaolin calcined, fineness is 1500 mesh；The emulsified asphalt oil content is 65%；The bone Material is fine work mechanism sandstone, and partial size is 0.1~2.36mm.
Embodiment 5
As shown in Figure 1, a kind of seamless bridge expansion joint based on phosphorus magnesium material, including pave-load layer 1 and cast-in-place concrete layer 6, it is provided with phosphorus magnesium material boundary layer 2, sheet metal 7 between the pave-load layer 1 and cast-in-place concrete layer 6 and is arranged in phosphorus magnesium The transverse steel 3 and vertical reinforcement 4 of 2 inside of material interface layer, the sheet metal 7 are arranged on the crack of cast-in-place concrete layer 6, Gap filling between the transverse steel 3 and pave-load layer 1, phosphorus magnesium material boundary layer 2, cast-in-place concrete layer 6 and sheet metal 7 There is phosphorus magnesia pulp layer 5.
Further, the transverse steel 3 is rectangular, and the setting of vertical reinforcement 4 is surveyed in the transverse steel 3, should Vertical reinforcement 4 is connect by steel wire with transverse steel 3；The diameter of the transverse steel 3 and vertical reinforcement 4 is 16mm, described Vertical reinforcement 4 at least two, and the distance between reinforcing bar is 200mm in the same direction；It is leaned between the crack of the cast-in-place concrete layer 6 Cylinder foams 8 are installed at nearly sheet metal 7；It is connected between the sheet metal 7 and cast-in-place concrete layer 6 by steel nail 9；It is described It at least two layers of sheet metal 7, is connected between the sheet metal 7 and sheet metal 7 by the steel nail 9.
A kind of construction method for weighing the seamless bridge expansion joint described above based on phosphorus magnesium material, includes the following steps：
1. preparing before construction：Understand structure, stroke and the environment temperature of bridge, calculate construction width, depth and area, It determines construction notch size, gets out Work machine and material；
2. the processing of pave-load layer 1：The construction area for indicating pave-load layer 1, stamps waterline in the position of saw kerf, is cut with road surface Position is cut and crossed along machine, rubble and disintegrating slag in slot is cleared up in time after waterline internal recessing, fluting with pneumatic pick machine, uses air Compressor purging notch makes to make slot bottom leak out cast-in-place concrete layer 6 without surface dust and discrete particles in slot；
3. installing cylinder foams 8：Interior installation cylinder foams 8 are stitched along the cast-in-place concrete layer 6 of bridge；
4. brushing phosphorus magnesium material boundary layer 2：When the fluidity of phosphorus magnesium material interfacial agents is 280 ± 10mm, setting time is When 40min, phosphorus magnesium material interfacial agents are equably brushed in the surrounding in slot with brush；
The phosphorus magnesium material layer 2 with a thickness of 0.2mm；The phosphorus magnesium material interfacial agents by following parts by weight raw material system At：100 parts of magnesium phosphate cement, 8 parts of additive, 15 parts of admixture, 100 parts of emulsified asphalt, preparation method are：By above-mentioned raw materials It is sent into blender and stirs 5min, it is uniformly mixed obtained that water is added；The dosage of the water is phosphorus magnesium material interfacial agents total weight 7%；
5. installing sheet metal 7：Sheet metal 7 is installed in the position of seam after 2 initial set of phosphorus magnesium material boundary layer, spreads sheet metal 7 The position of tankful mouth inseam；
6. assembling reinforcement：It is with steel wire that transverse steel 3 and 4 binding and fixing of vertical reinforcement is good；
7. pouring phosphorus magnesia slurry：Phosphorus magnesia slurry is configured, when the fluidity of phosphorus magnesia slurry is 240 ± 10mm, setting time is When 40min, phosphorus magnesia is starched in 2min and is added in stirring conveying integrated machine, at the uniform velocity stirring 2.3min, the phosphorus magnesium that will be stirred Mortar is transferred in conveying bucket, and lowest point starts to pour phosphorus magnesia slurry in conveying bucket, is poured on one side, on one side with vibrating spear into Row tamping, the absolute altitude of the absolute altitude poured and phosphorus magnesium material boundary layer 2 are contour；
The phosphorus magnesia slurry is made of raw material from the following weight：100 parts of magnesium phosphate cement, 8 parts of additive, admixture 15 Part, 100 parts of emulsified asphalt, 330 parts of fine aggregate, preparation method are：Above-mentioned raw materials are sent into blender and stir 5min, are added Water, which is uniformly mixed, to be made；The dosage of the water is that phosphorus magnesia starches the 7% of total weight；
8. conserving：Moisture-keeping maintaining is covered with plastic film after 7. phosphorus magnesia that step pours starches initial set, curing time is 1.5h；
9. coming into operation：It constructs after 3h, starts the use that is open to traffic.Process flow chart is as shown in Figure 3.
Further, the magnesium phosphate cement is dead burned magnesia and monoammonium phosphate according to 2.5：1 ratio is mixed to get； The dead burned magnesia is that phosphorus magnesium mine grinding after calcining at 1600 DEG C or more obtains, content of magnesia 92%, and fineness is 230 mesh；The nutrient of the monoammonium phosphate is 220 mesh not less than 58%, fineness；The additive is borax, defoaming agent and diminishing Agent, and ratio=4 of borax, defoaming agent and water-reducing agent：1.5：1；The purity of the borax, which is calculated in mass percent, to be not less than 95%；The defoaming agent is organic silicon powder defoaming agent；The admixture is the mixture of flyash and metakaolin, and powder Ratio=3 of coal ash and metakaolin：1；The fineness of the flyash is 800 mesh and grade is not less than second level；The higher ridge Soil is in 800 DEG C or more kaolin calcined, fineness is 1200 mesh；The emulsified asphalt oil content is 55%；The aggregate For fine work mechanism sandstone, partial size is 0.6~2.26mm.
Embodiment 6
As shown in Fig. 2, a kind of seamless bridge expansion joint based on phosphorus magnesium material, including pave-load layer 1 and cast-in-place concrete layer 6, phosphorus magnesium material boundary layer 2, sheet metal 7 are provided between the pave-load layer 1 and cast-in-place concrete layer 6, the sheet metal 7 is set It sets on the crack of cast-in-place concrete layer 6, the pave-load layer 1, phosphorus magnesium material boundary layer 2, cast-in-place concrete layer 6 and sheet metal 7 The gap in besieged city is filled with phosphorus magnesia pulp layer 5.
Further, cylinder foams 8 are installed at sheet metal 7 between the crack of the cast-in-place concrete layer 6；Institute It states and is connected between sheet metal 7 and cast-in-place concrete layer 6 by steel nail 9；At least two layers of the sheet metal 7, the sheet metal 7 with It is connected between sheet metal 7 by the steel nail 9.
A kind of construction method for weighing the seamless bridge expansion joint described above based on phosphorus magnesium material, includes the following steps：
1. preparing before construction：Understand structure, stroke and the environment temperature of bridge, calculate construction width, depth and area, It determines construction notch size, gets out Work machine and material；
2. the processing of pave-load layer 1：The construction area for indicating pave-load layer 1, stamps waterline in the position of saw kerf, is cut with road surface Position is cut and crossed along machine, rubble and disintegrating slag in slot is cleared up in time after waterline internal recessing, fluting with pneumatic pick machine, uses air Compressor purging notch makes to make slot bottom leak out cast-in-place concrete layer 6 without surface dust and discrete particles in slot；
3. installing cylinder foams 8：Interior installation cylinder foams 8 are stitched along the cast-in-place concrete layer 6 of bridge；
4. brushing phosphorus magnesium material boundary layer 2：When the fluidity of phosphorus magnesium material interfacial agents is 280 ± 10mm, setting time is When 30min, phosphorus magnesium material interfacial agents are equably brushed in the surrounding in slot with brush；
The phosphorus magnesium material layer 2 with a thickness of 0.1mm；The phosphorus magnesium material interfacial agents by following parts by weight raw material system At：90 parts of magnesium phosphate cement, 5 parts of additive, 13 parts of admixture, 90 parts of emulsified asphalt, preparation method are：Above-mentioned raw materials are sent Enter and stir 4min in blender, it is uniformly mixed obtained that water is added；The dosage of the water is phosphorus magnesium material interfacial agents total weight 7%；
5. installing sheet metal 7：Sheet metal 7 is installed in the position of seam after 2 initial set of phosphorus magnesium material boundary layer, spreads sheet metal 7 The position of tankful mouth inseam；
6. assembling reinforcement：It is with steel wire that transverse steel 3 and 4 binding and fixing of vertical reinforcement is good；
7. pouring phosphorus magnesia slurry：Phosphorus magnesia slurry is configured, when the fluidity of phosphorus magnesia slurry is 240 ± 10mm, setting time is When 30min, phosphorus magnesia is starched in 2min and is added in stirring conveying integrated machine, at the uniform velocity stirring 2min, the phosphorus magnesia that will be stirred Slurry is transferred in conveying bucket, and lowest point starts to pour phosphorus magnesia slurry in conveying bucket, is poured, is carried out on one side with vibrating spear on one side Tamping, the absolute altitude of the absolute altitude poured and phosphorus magnesium material boundary layer 2 are contour；
The phosphorus magnesia slurry is made of raw material from the following weight：90 parts of magnesium phosphate cement, 5 parts of additive, admixture 13 Part, 90 parts of emulsified asphalt, 300 parts of fine aggregate, preparation method are：Above-mentioned raw materials are sent into blender and stir 4min, are added Water, which is uniformly mixed, to be made；The dosage of the water is that phosphorus magnesia starches the 7% of total weight；
8. conserving：Moisture-keeping maintaining is covered with plastic film after 7. phosphorus magnesia that step pours starches initial set, curing time is 1.3h；
9. coming into operation：It constructs after 2.5h, starts the use that is open to traffic.Process flow chart is as shown in Figure 3.
Further, the magnesium phosphate cement is dead burned magnesia and monoammonium phosphate according to 2：1 ratio is mixed to get；Institute Stating dead burned magnesia is phosphorus magnesium mine by grinding acquisition, content of magnesia 90%, fineness 150 after 1600 DEG C or more calcinings Mesh；The nutrient of the monoammonium phosphate is 150 mesh not less than 58%, fineness；The additive be borax, defoaming agent and water-reducing agent, And ratio=4 of borax, defoaming agent and water-reducing agent：1.3：1；The purity of the borax is calculated in mass percent not less than 95%； The defoaming agent is organic silicon powder defoaming agent；The admixture is the mixture of flyash and metakaolin, and flyash With ratio=2.5 of metakaolin：1；The fineness of the flyash is 500 mesh and grade is not less than second level；The metakaolin For in 800 DEG C or more kaolin calcined, fineness is 1000 mesh；The emulsified asphalt oil content is 50%；The aggregate is Fine work mechanism sandstone, partial size are 0.5~2.36mm.
Embodiment 7
As shown in Fig. 2, a kind of seamless bridge expansion joint based on phosphorus magnesium material, including pave-load layer 1 and cast-in-place concrete layer 6, phosphorus magnesium material boundary layer 2, sheet metal 7 are provided between the pave-load layer 1 and cast-in-place concrete layer 6, the sheet metal 7 is set It sets on the crack of cast-in-place concrete layer 6, the pave-load layer 1, phosphorus magnesium material boundary layer 2, cast-in-place concrete layer 6 and sheet metal 7 The gap in besieged city is filled with phosphorus magnesia pulp layer 5.
Further, cylinder foams 8 are installed at sheet metal 7 between the crack of the cast-in-place concrete layer 6；Institute It states and is connected between sheet metal 7 and cast-in-place concrete layer 6 by steel nail 9；At least two layers of the sheet metal 7, the sheet metal 7 with It is connected between sheet metal 7 by the steel nail 9.
A kind of construction method for weighing the seamless bridge expansion joint described above based on phosphorus magnesium material, includes the following steps：
1. preparing before construction：Understand structure, stroke and the environment temperature of bridge, calculate construction width, depth and area, It determines construction notch size, gets out Work machine and material；
2. the processing of pave-load layer 1：The construction area for indicating pave-load layer 1, stamps waterline in the position of saw kerf, is cut with road surface Position is cut and crossed along machine, rubble and disintegrating slag in slot is cleared up in time after waterline internal recessing, fluting with pneumatic pick machine, uses air Compressor purging notch makes to make slot bottom leak out cast-in-place concrete layer 6 without surface dust and discrete particles in slot；
3. installing cylinder foams 8：Interior installation cylinder foams 8 are stitched along the cast-in-place concrete layer 6 of bridge；
4. brushing phosphorus magnesium material boundary layer 2：When the fluidity of phosphorus magnesium material interfacial agents is 280 ± 10mm, setting time is When 50min, phosphorus magnesium material interfacial agents are equably brushed in the surrounding in slot with brush；
The phosphorus magnesium material layer 2 with a thickness of 0.25mm；The phosphorus magnesium material interfacial agents by following parts by weight raw material system At：105 parts of magnesium phosphate cement, 12 parts of additive, 17 parts of admixture, 105 parts of emulsified asphalt, preparation method are：By above-mentioned original Material, which is sent into blender, stirs 6min, and it is uniformly mixed obtained that water is added；The dosage of the water is phosphorus magnesium material interfacial agents total weight 8%；
5. installing sheet metal 7：Sheet metal 7 is installed in the position of seam after 2 initial set of phosphorus magnesium material boundary layer, spreads sheet metal 7 The position of tankful mouth inseam；
6. assembling reinforcement：It is with steel wire that transverse steel 3 and 4 binding and fixing of vertical reinforcement is good；
7. pouring phosphorus magnesia slurry：Phosphorus magnesia slurry is configured, when the fluidity of phosphorus magnesia slurry is 240 ± 10mm, setting time is When 50min, phosphorus magnesia is starched in 2min and is added in stirring conveying integrated machine, at the uniform velocity stirring 2.5min, the phosphorus magnesium that will be stirred Mortar is transferred in conveying bucket, and lowest point starts to pour phosphorus magnesia slurry in conveying bucket, is poured on one side, on one side with vibrating spear into Row tamping, the absolute altitude of the absolute altitude poured and phosphorus magnesium material boundary layer 2 are contour；
The phosphorus magnesia slurry is made of raw material from the following weight：105 parts of magnesium phosphate cement, 12 parts of additive, admixture 17 parts, 105 parts of emulsified asphalt, 360 parts of fine aggregate, preparation method are：Above-mentioned raw materials are sent into blender and stir 6min, are added It is uniformly mixed obtained to enter water；The dosage of the water is that phosphorus magnesia starches the 8% of total weight；
8. conserving：Moisture-keeping maintaining is covered with plastic film after 7. phosphorus magnesia that step pours starches initial set, curing time is 1.7h；
9. coming into operation：It constructs after 3.5h, starts the use that is open to traffic.Process flow chart is as shown in Figure 3.
Further, the magnesium phosphate cement is dead burned magnesia and monoammonium phosphate according to 3：1 ratio is mixed to get；Institute Stating dead burned magnesia is phosphorus magnesium mine by grinding acquisition, content of magnesia 93%, fineness 300 after 1600 DEG C or more calcinings Mesh；The nutrient of the monoammonium phosphate is 300 mesh not less than 58%, fineness；The additive be borax, defoaming agent and water-reducing agent, And ratio=4 of borax, defoaming agent and water-reducing agent：1.7：1；The purity of the borax is calculated in mass percent not less than 95%； The defoaming agent is organic silicon powder defoaming agent；The admixture is the mixture of flyash and metakaolin, and flyash With ratio=3.5 of metakaolin：1；The fineness of the flyash is 1300 mesh and grade is not less than second level；The metakaolin For in 800 DEG C or more kaolin calcined, fineness is 1300 mesh；The emulsified asphalt oil content is 60%；The aggregate is Fine work mechanism sandstone, partial size are 0.3~2.36mm.
The technical effect can be reached in order to further illustrate the present invention, do following experiment：
Comparative example 1
With embodiment 1 to 7 the difference is that：Boundary layer is normal silicate cementitious material, and other conditions are constant.
Comparative example 2
With embodiment 1 to 7 the difference is that：It pours using being normal silicate cementitious material, other conditions are constant.
Comparative example 3
With embodiment 1 to 7 the difference is that：Boundary layer brushing phosphorus magnesium material is made of raw material from the following weight：Phosphorus 65 parts of sour magnesium cement, 20 parts of additive, 3 parts of admixture, 20 parts of emulsified asphalt, 50 parts of fine aggregate, other conditions are constant.
Comparative example 4
With embodiment 1 to 7 the difference is that：The phosphorus magnesium material of boundary layer brushing is made of raw material from the following weight： 240 parts of magnesium phosphate cement, 30 parts of additive, 29 parts of admixture, 200 parts of emulsified asphalt, 600 parts of fine aggregate, other conditions are constant.
Comparative example 5
With embodiment 1 to 7 the difference is that：The phosphorus magnesium material for pouring use is made of raw material from the following weight：Phosphorus 40 parts of sour magnesium cement, 25 parts of additive, 5 parts of admixture, 50 parts of emulsified asphalt, 80 parts of fine aggregate, other conditions are constant.
Comparative example 6
With embodiment 1 to 7 the difference is that：The phosphorus magnesium material for pouring use is made of raw material from the following weight：Phosphorus 250 parts of sour magnesium cement, 35 parts of additive, 45 parts of admixture, 400 parts of emulsified asphalt, 800 parts of fine aggregate, other conditions are constant.
It is applied on bridge expanssion joint using the scheme of Examples 1 to 7 and comparative example 1~6, is found in use process, this The scheme of inventive embodiments 1~7 can reach herein described performance effect, and format then occurs in the scheme of comparative example 1~6 The problem of various kinds, wherein 1 phosphorus magnesia of comparative example slurry is close with notch surrounding engaging portion, slight crack occurs；Comparative example 2 pours commonly Silicate cementing material region rate of set is slow, and the region is not close in conjunction with notch surrounding, occurs collapsing phenomenon after being open to traffic, and It is easy to be carbonized, is not corrosion-resistant；The early period of comparative example 4 and 6 construct when phosphorus magnesium material interfacial agents and phosphorus magnesium mortar coagulation time quickly；It is right The setting time relative contrast of ratio 3 and 5 example 4 and 6 is slow, and the later period is easy to fall off using raw material at construction；Comparative example 3~6 early period of bridge Expansion joint is substantially without what problem, after a period of use, all appearance collapsing, crack, the bad phenomenons such as fall off.
The scheme of Examples 1 to 7 and comparative example 1~6 is applied on bridge expanssion joint, gained bridge expanssion joint comparison knot Fruit is as shown in following table table 2：
Table 2
By 2 experimental data of table it is found that the method for the present invention construction complete 2h axle casing expansion joint compression strength reach 30MPa with On, flexural strength reaches 8MPa or more；Construction completes 3d axle casing expansion joint compression strength and reaches 50MPa or more, flexural strength Reach 20MPa or more, generate (VOC value is almost nil) after the completion of work progress and construction almost without volatile organic matter, The use that can be open to traffic in 2 to 4 hours is completed in construction, and running time is short.
In conclusion phosphorus magnesium material interfacial agents of the present invention and the construction of phosphorus magnesia slurry have infiltration wetting in bridge expanssion joint Property is good, early strength is high, later strength is strong, closure adhesive force is strong, quick-drying is wear-resisting, resistance to water logging solarization, it is non-slip, can be in low temperature Construction under environment, it is easy for construction, at low cost, overall merits, especially extremely low VOC value, the seamless bridge expansion joint such as be easily handled Retractility is good, high-temperature stability is strong, low-temperature cracking-resistance is good, construction is simple, running time is short, early strength is high, maintenance maintenance is simple Single, durability is by force, waterproofness and cementability are strong, operation driving is comfortable steadily, long service life.Sheet metal of the present invention and cast-in-place mixed Solidifying connection between soil layer, sheet metal and sheet metal is connected with steel nail, i.e., is directly incorporated into cast-in-place concrete layer with steel nail, simply Densification will not leave behind gap；Installation notch are shallow, are not necessarily to anchor system, are tightly combined with road surface, smoothly；Easy construction is flexible, opens Clearance vehicle is comfortable, and maintenance is simple, cheap, good in economic efficiency；It is applicable in the installation of various types of bridge expanssion joints or studies for a second time courses one has flunked, Moreover, requirement can be met by being added without reinforcing bar for the middle-size and small-size bridge of small traffic volume, and it is easy for construction, save road construction Or the construction cost of finishing.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case where without departing from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, nothing By from the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended Claim rather than above description limit, it is intended that by the institute in the meaning and scope for the equivalent loins for falling in claim It changes and includes within protection scope of the present invention.

Claims (10)

1. a kind of seamless bridge expansion joint based on phosphorus magnesium material, including pave-load layer (1) and cast-in-place concrete layer (6), feature It is：Be provided between the pave-load layer (1) and cast-in-place concrete layer (6) phosphorus magnesium material boundary layer (2), sheet metal (7) with And the transverse steel (3) and vertical reinforcement (4) being arranged on the inside of phosphorus magnesium material boundary layer (2), sheet metal (7) setting is existing On the crack of pouring concrete layer (6), the transverse steel (3) and pave-load layer (1), phosphorus magnesium material boundary layer (2), cast-in-place concrete Gap between layer (6) and sheet metal (7) is filled with phosphorus magnesia pulp layer (5).
2. a kind of seamless bridge expansion joint based on phosphorus magnesium material according to claim 1, it is characterised in that：The transverse direction Reinforcing bar (3) is rectangular, and vertical reinforcement (4) setting is surveyed in the transverse steel (3), which passes through steel wire It is connect with transverse steel (3).
3. a kind of seamless bridge expansion joint based on phosphorus magnesium material according to claim 1 or 2, it is characterised in that：It is described The diameter of transverse steel (3) and vertical reinforcement (4) is 16mm, the vertical reinforcement (4) at least two, and in the same direction reinforcing bar it Between distance be 200mm.
4. a kind of seamless bridge expansion joint based on phosphorus magnesium material according to claim 1, it is characterised in that：It is described cast-in-place Cylinder foams (8) are installed at sheet metal (7) between the crack of concrete layer (6).
5. a kind of seamless bridge expansion joint based on phosphorus magnesium material according to claim 1 or 4, it is characterised in that：It is described It is connect between sheet metal (7) and cast-in-place concrete layer (6) by steel nail (9).
6. a kind of seamless bridge expansion joint based on phosphorus magnesium material according to claim 5, it is characterised in that：The thin steel At least two layers of plate (7) is connect between the sheet metal (7) and sheet metal (7) by the steel nail (9).
7. a kind of construction method at the seamless bridge expansion joint as described in any one of claims 1 to 6 based on phosphorus magnesium material, It is characterized in that, includes the following steps：
1. preparing before construction：Understand structure, stroke and the environment temperature of bridge, measuring and calculating construction width, depth and area determine Construction notch size, gets out Work machine and material；
2. the processing of pave-load layer (1)：The construction area for indicating pave-load layer (1), stamps waterline in the position of saw kerf, is cut with road surface Position is cut and crossed along machine, rubble and disintegrating slag in slot is cleared up in time after waterline internal recessing, fluting with pneumatic pick machine, uses air Compressor purging notch makes to make slot bottom leak out cast-in-place concrete layer (6) without surface dust and discrete particles in slot；
3. installing cylinder foams (8)：Cylinder foams (8) are installed along cast-in-place concrete layer (6) seam of bridge；
4. brushing phosphorus magnesium material boundary layer (2)：When the fluidity of phosphorus magnesium material interfacial agents is 280 ± 10mm, setting time 20 When~60min, phosphorus magnesium material interfacial agents are equably brushed in the surrounding in slot with brush；
5. installing sheet metal (7)：Sheet metal (7) are installed in the position of seam after phosphorus magnesium material boundary layer (2) initial set, make sheet metal (7) it is paved with the position of notch inseam；
6. assembling reinforcement：It is with steel wire that transverse steel (3) and vertical reinforcement (4) binding and fixing is good；
7. pouring phosphorus magnesia slurry：Configure phosphorus magnesia slurry, when the fluidity of phosphorus magnesia slurry is 240 ± 10mm, setting time be 20~ When 60min, phosphorus magnesia is starched in 2min and is added in stirring conveying integrated machine, at the uniform velocity 1~3.5min of stirring, the phosphorus that will be stirred Magnesia slurry is transferred in conveying bucket, and lowest point starts to pour phosphorus magnesia slurry in conveying bucket, is poured on one side, is used vibrating spear on one side It is consolidated, the absolute altitude of the absolute altitude poured and phosphorus magnesium material boundary layer (2) is contour；
8. conserving：Moisture-keeping maintaining is covered with plastic film after 7. phosphorus magnesia that step pours starches initial set, curing time is 1~ 2h；
9. coming into operation：It constructs after 2~4h, starts the use that is open to traffic.
8. a kind of construction method at seamless bridge expansion joint based on phosphorus magnesium material according to claim 7, feature exist In：Step 4., the phosphorus magnesium material interfacial agents are made of raw material from the following weight：It is 80~120 parts of magnesium phosphate cement, additional 2~15 parts of agent, 10~20 parts of admixture, 80~120 parts of emulsified asphalt, preparation method are：Above-mentioned raw materials are sent into blender It is uniformly mixed obtained that water is added in 3~7min of middle stirring；The dosage of the water is the 5~10% of phosphorus magnesium material interfacial agents total weight.
9. a kind of construction method at seamless bridge expansion joint based on phosphorus magnesium material according to claim 7, feature exist In：Step 7., phosphorus magnesia slurry is made of raw material from the following weight：80~120 parts of magnesium phosphate cement, additive 2~ 15 parts, 10~20 parts of admixture, 80~120 parts of emulsified asphalt, 250~400 parts of fine aggregate, preparation method are：By above-mentioned original Material, which is sent into blender, stirs 3~7min, and addition water, which is uniformly mixed, to be made；The dosage of the water is that phosphorus magnesia starches the 5 of total weight ~10%.
10. a kind of construction method at seamless bridge expansion joint based on phosphorus magnesium material according to claim 8 or claim 9, special Sign is：The magnesium phosphate cement is dead burned magnesia and monoammonium phosphate according to 1~4：1 ratio is mixed to get.
CN201810798165.6A 2018-07-19 2018-07-19 seamless bridge expansion joint based on phosphorus-magnesium material and construction method thereof Active CN108842606B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111705640A (en) * 2020-06-05 2020-09-25 常州市市政工程设计研究院有限公司 Seamless expansion joint structure for bridge joint treatment and construction process thereof
CN118108481A (en) * 2024-04-30 2024-05-31 烟台大学 Preparation process of cement-based repair mortar material for bridge expansion joint

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT11643U1 (en) * 2009-10-02 2011-02-15 Fuchs Josef Engelbert METHOD FOR PRODUCING A SUPPORT ELEMENT FOR MOUNTING IN CONCRETE OR ASPHALT CEILING OF TRACK OR BRIDGE TRANSITIONS, AND THEREFORE EQUIPPED TRACK OR BRIDGE TRANSITION
CN204608598U (en) * 2015-05-08 2015-09-02 山西省交通科学研究院 A kind of seamless bridge joint structure
CN105625169A (en) * 2015-12-24 2016-06-01 重庆博焱建筑加固工程有限公司 Rapid replacing method and restoring method for bridge expansion joint
CN106702891A (en) * 2016-12-17 2017-05-24 浙江工业大学 Hidden seam type expansion joint structure
CN107777966A (en) * 2017-11-17 2018-03-09 芜湖铁路桥梁制造有限公司 It is a kind of using cement and flyash as bridge expanssion joint area concrete special of bed material and preparation method thereof
CN208844420U (en) * 2018-07-19 2019-05-10 贵州磷镁材料有限公司 A kind of seamless bridge expansion joint based on phosphorus magnesium material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT11643U1 (en) * 2009-10-02 2011-02-15 Fuchs Josef Engelbert METHOD FOR PRODUCING A SUPPORT ELEMENT FOR MOUNTING IN CONCRETE OR ASPHALT CEILING OF TRACK OR BRIDGE TRANSITIONS, AND THEREFORE EQUIPPED TRACK OR BRIDGE TRANSITION
CN204608598U (en) * 2015-05-08 2015-09-02 山西省交通科学研究院 A kind of seamless bridge joint structure
CN105625169A (en) * 2015-12-24 2016-06-01 重庆博焱建筑加固工程有限公司 Rapid replacing method and restoring method for bridge expansion joint
CN106702891A (en) * 2016-12-17 2017-05-24 浙江工业大学 Hidden seam type expansion joint structure
CN107777966A (en) * 2017-11-17 2018-03-09 芜湖铁路桥梁制造有限公司 It is a kind of using cement and flyash as bridge expanssion joint area concrete special of bed material and preparation method thereof
CN208844420U (en) * 2018-07-19 2019-05-10 贵州磷镁材料有限公司 A kind of seamless bridge expansion joint based on phosphorus magnesium material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王旭: "浅谈桥梁无缝伸缩缝的应用", 《黑龙江交通科技》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111705640A (en) * 2020-06-05 2020-09-25 常州市市政工程设计研究院有限公司 Seamless expansion joint structure for bridge joint treatment and construction process thereof
CN111705640B (en) * 2020-06-05 2021-10-29 常州市市政工程设计研究院有限公司 Seamless expansion joint structure for bridge joint treatment and construction process thereof
CN118108481A (en) * 2024-04-30 2024-05-31 烟台大学 Preparation process of cement-based repair mortar material for bridge expansion joint
CN118108481B (en) * 2024-04-30 2024-06-25 烟台大学 Preparation process of cement-based repair mortar material for bridge expansion joint

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