CN107021683A - Quickly repair the cement mortar concrete used and its construction method in a kind of road surface - Google Patents
Quickly repair the cement mortar concrete used and its construction method in a kind of road surface Download PDFInfo
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- CN107021683A CN107021683A CN201710299952.1A CN201710299952A CN107021683A CN 107021683 A CN107021683 A CN 107021683A CN 201710299952 A CN201710299952 A CN 201710299952A CN 107021683 A CN107021683 A CN 107021683A
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- cement mortar
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/005—Methods or materials for repairing pavings
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Repair (AREA)
- Road Paving Structures (AREA)
Abstract
The cement mortar concrete used and its construction method are quickly repaired the invention discloses a kind of road surface, belong to modern pavement technique field, the cement mortar concrete includes compound, dry powder and mortar and water, the compound is macadam-aggregate mix or bituminous concrete moxture, and the dry powder and mortar includes the component of following mass fraction：Cement 30%~50%, sand 20%~40%, organic binder bond 2%~4%, active filler 10%~20%, shrinkage-minimizing agent 3%~10%, water reducer 0.2%~0.5% and early strength agent 0.1%~1%；The construction method comprises the following steps：Former disease plate is removed, compound is laid, cement mortar is prepared, joints cement mortar strikes off, conserves road surface.The cement mortar of the present invention has good fluidity and intensity, and cement mortar is cast in mix surface, and the cement mortar concrete of formation has good intensity；Meanwhile, construction technology of the invention is simple, the pavement maintenance time is short.
Description
Technical field
The cement mortar coagulation used is quickly repaired the invention belongs to modern pavement technique field, more particularly to a kind of road surface
Soil and its construction method.
Background technology
Gradually perfect with highway in China transportation network, the maintenance of highway is increasingly taken seriously.Due to designing,
Construction, use environment, curing water equality reason, the cement concrete pavement and asphalt concrete pavement built at present are being used
In occur in that different degrees of destruction.These destroy growth, the increase of service time with the volume of traffic, with continuous expansion
Trend.Due to lacking the maintenance technology of Fast Practical, the curing period domestic demand of conventional pav reparation blocks road for a long time, this
The normal operation of vehicle has been had a strong impact on, and hidden danger is left for traffic safety, social repercussion is very big.
In subgrade and pavement maintenance engineering, on the one hand require that concrete strength height, open to traffic are fast, but another aspect work
Journey scale is typically small, it is difficult to using the construction machinery and equipment of large-scale production, usually cause repair quality low.
So, at present we need one kind can to make using extensive plant equipment pavement maintenance speed is fast, dimension
Repair the high construction method of quality；Simultaneously, it is necessary to which a kind of cement mortar concrete specially matched somebody with somebody is to strengthen the intensity on road surface, such as pressure resistance
Degree, anti-stretch bending strength etc..
The content of the invention
Present invention aims to overcome that the deficiency that prior art is present, and it is quick to provide a kind of road surface for strengthening pavement strength
Repair the cement mortar concrete used and its construction method.To achieve the above object, the technical scheme taken of the present invention is：One
Plant road surface and quickly repair the cement mortar concrete used, comprising compound, dry powder and mortar and water, the compound is mixed for rubble
Material or bituminous concrete moxture are closed, the dry powder and mortar includes the component of following mass fraction：Cement 30%~50%, sand 20%
~40%, organic binder bond 2%~4%, active filler 10%~20%, shrinkage-minimizing agent 3%~10%, water reducer 0.2%~
0.5% and early strength agent 0.1%~1%.
Preferably, the organic binder bond is aqueous epoxy resins, and active filler is flyash, and shrinkage-minimizing agent is polyalcohols
Organic matter, water reducer is polycarboxylic acids, and early strength agent is calcium formate.Various ingredients are carried out organic assembling by the dry powder and mortar of the present invention,
The fluidity and enhancing rupture strength and fault block compression strength of cement special mortar can be improved, cement special mortar is enhanced
Intensity can be with the intensity of reinforced cement mortar concrete road surface.
As the improvement of above-mentioned technical proposal, the mass ratio of the water and the dry powder and mortar is 0.2：1~0.25：1.
As the improvement of above-mentioned technical proposal, the macadam-aggregate mix comprising particle size for 13.2~16mm rubble and
Particle size is 19~26.5mm rubble, and the Design Air Voids of the macadam-aggregate mix are 25%~40%.The present invention in order to
Shorten the time of pavement maintenance, macadam-aggregate mix is designed as large porosity；Meanwhile, filled in the skeleton space of macadam-aggregate mix
There is cement mortar, cement mortar fills up the space that rubble mixes compound under Gravitative Loads, forms a kind of high performance cement bonded sand
Concrete grout, can be with without vibration, self-compaction, and making to be formed cement mortar concrete road surface, there is good compression strength and bending resistance to draw
Intensity.
Further improved as above-mentioned technical proposal, rubble and particle size that the particle size is 13.2~16mm
It is 1 for the mass ratio of 19~26.5mm rubble：3~2：1.
Further improved as above-mentioned technical proposal, the macadam-aggregate mix also comprising particle size be 4.75~
13.2mm rubble, rubble and grain that rubble that the particle size is 4.75~13.2mm, particle size are 13.2~16mm
Footpath size is that the mass ratio of 19~26.5mm rubbles is 15~45：30~50：25~35.
As the improvement of above-mentioned technical proposal, the Design Air Voids of the asphalt macadam are 20%~30%, the pitch
The bitumen aggregate ratio of macadam-aggregate mix is 1.5%~4%.
Further improved as above-mentioned technical proposal, the bituminous concrete moxture is comprising miberal powder, particle size
The rubble that the rubble and particle size that 1.18~2.36mm rubble, particle size are 4.75~9.5mm are 9.5~13.2mm,
The rubble and particle size that rubble that the miberal powder, particle size are 1.18~2.36mm, particle size are 4.75~9.5mm be
The mass ratio of 9.5~13.2mm rubble is 2~6：6~12：21~23：63~68.Bituminous concrete moxture design is specific
Voidage, the effect matched are similar to the effect of above-mentioned macadam-aggregate mix, but are due to the addition of pitch, to whole compound
Structure produces certain influence, and voidage and proportioning are intended to be adjusted.
Further improved as above-mentioned technical proposal, the cement mortar concrete includes the group of following mass fraction
Point：Bituminous concrete moxture 78%, dry powder cement mortar 17.6%, water 4.4%；The design space of the bituminous concrete moxture
Rate is 22%, and the bitumen aggregate ratio of bituminous concrete moxture is 3.9%；The miberal powder, particle size for 1.18~2.36mm rubble,
The rubble mass ratio that the rubble and particle size that particle size is 4.75~9.5mm are 9.5~13.2mm is 3：12：21：64.
In addition, the present invention also provides a kind of construction party quickly repaired using cement mortar concrete progress road surface
Method, comprises the following steps：
1) former disease plate is removed
Preferably, clear up and cut and require that periphery plate margin is neat and keeps working face clear after the plate of disease, removing
It is clean and dry.
2) compound is laid
Preferably, pouring into and paving after macadam-aggregate mix or bituminous concrete moxture being well mixed needs repairing on road surface
Pit-hole in, if pit-hole edge or bottom have discharge outlet or other scuppers to anticipate, prevent slurries from leaking outside.When using broken
During stone compound, according to《Highway cement concrete pavement design specification》(JTG D40-2011) regulation sets seam；When using
During bituminous concrete moxture, bituminous concrete moxture can mix technique or emulsified asphalt using asphalt heat as needed and conveniently
Cold mixing technique, is rolled using light-duty road roller and paved, can the multiple plates of one-time continuous laying.
3) cement mortar is prepared
Dry powder cement mortar and water are added to mortar blending device, high-speed stirred, according to Guangdong Province's provincial standard《It is special
Mortar half-flexible pavement application technology specification》(DB44/T1296-2014) method determines Mortar'S Flowability, controls finished product mark
It is accurate.
4) joints cement mortar
The cement mortar mixed and stirred pours into step (2) ready mix surface, and cement mortar is passed through under Gravitative Loads
In the skeleton space for entering macadam-aggregate mix or bituminous concrete moxture, untill being fully filled with.
5) strike off, conserve road surface
Strike off and strike off unnecessary cement mortar；Open to traffic after the suitable maintenance process maintenance of selection, 24h.
Be used as the improvement of above-mentioned technical proposal, step 2) lay the bituminous concrete moxture when, the multiple plates of continuous laying
Block and be not provided with seam.
The beneficial effects of the present invention are：The present invention provide a kind of road surface quickly repair the cement mortar concrete that uses and
Its construction method, the present invention is adjusted to the proportioning of dry powder and mortar, and dry powder and mortar is with water according to certain mass than mixing
Prepare cement mortar, in cement mortar various ingredients synergic adjustment its own intensity and fluidity, poured to mix surface
Cement mortar, cement mortar is under Gravitative Loads, in the skeleton space of injection macadam-aggregate mix or bituminous concrete moxture, until
Untill being fully filled with, a kind of high performance cement mortar concrete is formed, makes road surface that there is good compression strength and bending resistance to draw
Intensity；Compound uses larger voidage, can brief maintenance of surface time；Laid using bituminous concrete moxture
When, multiple plates can be laid with one-time continuous without setting seam, can so simplify construction technology, improve pavement maintenance
Efficiency；The cement mortar dedicated mortar forming method that the present invention is used, construction technology is easy, without using applying for large-scale production
Work machinery and equipment, equipment investment are low, can be widely applied to field of civil engineering.
Embodiment
For the object, technical solutions and advantages of the present invention are better described, below in conjunction with specific embodiment and subordinate list pair
The present invention is described further.
Embodiment 1
A kind of dry powder and mortar of the present embodiment, the dry powder and mortar includes the component of following mass fraction：Cement 30%, sand
40%, aqueous epoxy resins 2%, flyash 20%, polyalcohols type organic 7.7%, polycarboxylic acids 0.2%, calcium formate 0.1%.This
A kind of cement mortar implemented, wherein, the mass ratio of water and dry powder and mortar is 0.2：1.
A kind of macadam-aggregate mix of the present embodiment, the Design Air Voids of the macadam-aggregate mix are 30%, and the rubble is mixed
The rubble that material is respectively 13.2~16mm, 19~26.5mm containing particle size is closed, the mass ratio of the two is 1：1.
The construction technology that a kind of road surface of this implementation is quickly repaired, the construction technology comprises the following steps：
1) former disease plate is removed
Clear up and cut and require that periphery plate margin is neat after the plate of disease, removing and keep working face to clean and dry
It is dry.
2) compound is laid
Macadam-aggregate mix is poured into and paved after well mixed in the pit-hole for needing to repair on road surface, pit-hole edge or bottom
If thering is discharge outlet or other scuppers to anticipate, prevent slurries from leaking outside.When using macadam-aggregate mix, according to《Highway water
Cement concrete Pavement Design specification》(JTG D40-2011) regulation sets seam.
3) cement special mortar is prepared
Dry powder cement mortar and water are added to mortar blending device, high-speed stirred, according to Guangdong Province's provincial standard《It is special
Mortar half-flexible pavement application technology specification》(DB44/T1296-2014) method determines Mortar'S Flowability, controls finished product mark
It is accurate.
4) joints cement mortar
The cement special mortar mixed and stirred pours into the ready macadam-aggregate mix surface of step (2), and cement mortar is in deadweight
Under effect, in the skeleton space of injection macadam-aggregate mix or bituminous concrete moxture, untill being fully filled with.
5) strike off, conserve road surface
Strike off and strike off unnecessary cement special mortar；Open to traffic after the suitable maintenance process maintenance of selection, 24h.
Embodiment 2
A kind of dry powder and mortar of the present embodiment, dry powder and mortar includes the component of following mass fraction：Cement 46.1%, sand
36%, aqueous epoxy resins 3.5%, flyash 10%, polyalcohols type organic 3%, polycarboxylic acids 0.4%, calcium formate 1%.This reality
A kind of cement mortar of example is applied, wherein, the mass ratio of water and dry powder and mortar is 0.225：1.
A kind of macadam-aggregate mix of the present embodiment, the Design Air Voids of the macadam-aggregate mix are 40%, and the rubble is mixed
The rubble that material is respectively 13.2~16mm, 19~26.5mm containing particle size is closed, the mass ratio of the two is 1：3.
The construction technology that a kind of road surface of this implementation is quickly repaired, the construction technology be the same as Example 1.
Embodiment 3
A kind of dry powder and mortar of the present embodiment, the dry powder and mortar includes the component of following mass fraction：Cement 50%, sand
20%, aqueous epoxy resins 4%, flyash 15%, polyalcohols type organic 10%, polycarboxylic acids 0.5%, calcium formate 0.5%.This reality
A kind of cement mortar of example is applied, wherein, the mass ratio of water and dry powder and mortar is 0.25：1.
A kind of macadam-aggregate mix of the present embodiment, the Design Air Voids of the macadam-aggregate mix are 34%, and the rubble is mixed
The rubble that material is respectively 13.2~16mm, 19~26.5mm containing particle size is closed, the mass ratio of the two is 2：1.
The construction technology that a kind of road surface of this implementation is quickly repaired, the construction technology be the same as Example 1.
Embodiment 4
A kind of dry powder and mortar of the present embodiment, the dry powder and mortar includes the component of following mass fraction：Cement 48%, sand
22%, aqueous epoxy resins 4%, flyash 16%, polyalcohols type organic 9%, polycarboxylic acids 0.5%, calcium formate 0.5%.This reality
A kind of cement mortar of example is applied, wherein, the mass ratio of water and dry powder and mortar is 0.25：1.
A kind of macadam-aggregate mix of the present embodiment, the Design Air Voids of the macadam-aggregate mix are 34%, and the rubble is mixed
The rubble that material is respectively 13.2~16mm, 19~26.5mm containing particle size is closed, the mass ratio of the two is 1.9：1.
Embodiment 5
A kind of dry powder and mortar of the present embodiment and a kind of cement mortar be the same as Example 2, a kind of rubble mixing of the present embodiment
Material, the Design Air Voids of the macadam-aggregate mix are 34%, the macadam-aggregate mix contain particle size be respectively 4.75~
13.2mm, 13.2~16mm, 19~26.5mm rubble, the mass ratio of three is 15：50：35.
The construction technology that a kind of road surface of this implementation is quickly repaired, the construction technology be the same as Example 1.
Embodiment 6
A kind of dry powder and mortar of the present embodiment and a kind of cement mortar be the same as Example 2, a kind of rubble mixing of the present embodiment
Material, the Design Air Voids of the macadam-aggregate mix are 28%, the macadam-aggregate mix contain particle size be respectively 4.75~
13.2mm, 13.2~16mm, 19~26.5mm rubble, the mass ratio of three is 30：40：30.
The construction technology that a kind of road surface of this implementation is quickly repaired, the construction technology be the same as Example 1.
Embodiment 7
A kind of dry powder and mortar of the present embodiment and a kind of cement mortar be the same as Example 2, a kind of rubble mixing of the present embodiment
Material, the Design Air Voids of the macadam-aggregate mix are 25%, the macadam-aggregate mix contain particle size be respectively 4.75~
13.2mm, 13.2~16mm, 19~26.5mm rubble, the mass ratio of three is 45：30：25.
The construction technology that a kind of road surface of this implementation is quickly repaired, the construction technology be the same as Example 1.
Embodiment 8
A kind of dry powder and mortar of the present embodiment and a kind of cement mortar be the same as Example 2, a kind of asphalt macadam of the present embodiment
Compound, the Design Air Voids of the macadam-aggregate mix are 30%, and bitumen aggregate ratio is 4%, and the bituminous concrete moxture contains ore deposit
Powder and particle size are respectively 1.18~2.36mm, 4.75~9.5mm, 9.5~13.2mm rubble, and four mass ratio is
2：6：22：68.
The construction technology that a kind of road surface of this implementation is quickly repaired, the construction technology comprises the following steps：
1) former disease plate is removed
Clear up and cut and require that periphery plate margin is neat after the plate of disease, removing and keep working face to clean and dry
It is dry.
2) compound is laid
Macadam-aggregate mix is poured into and paved after well mixed in the pit-hole for needing to repair on road surface, pit-hole edge or bottom
If thering is discharge outlet or other scuppers to anticipate, prevent slurries from leaking outside.When using bituminous concrete moxture, asphalt macadam
Compound can mix technique or emulsified asphalt cold mixing technique using asphalt heat as needed and conveniently, be ground using light-duty road roller
Pressure is paved, can one-time continuous lay multiple plates without setting seam.
3) cement special mortar is prepared
Dry powder cement mortar and water are added to mortar blending device, high-speed stirred, according to Guangdong Province's provincial standard《It is special
Mortar half-flexible pavement application technology specification》(DB44/T1296-2014) method determines Mortar'S Flowability, controls finished product mark
It is accurate.
4) to step 2) laying mix surface joints cement mortar
The cement special mortar mixed and stirred pours into the ready macadam-aggregate mix surface of step (2), and cement mortar is in deadweight
Under effect, in the skeleton space of injection macadam-aggregate mix or bituminous concrete moxture, untill being fully filled with.
5) strike off, conserve road surface
Strike off and strike off unnecessary cement special mortar；Open to traffic after the suitable maintenance process maintenance of selection, 24h.
Embodiment 9
A kind of dry powder and mortar of the present embodiment and a kind of cement mortar be the same as Example 2, a kind of asphalt macadam of the present embodiment
Compound, the Design Air Voids of the macadam-aggregate mix are 20%, and bitumen aggregate ratio is 1.5%, and the bituminous concrete moxture contains
Miberal powder and particle size are respectively 1.18~2.36mm, 4.75~9.5mm, 9.5~13.2mm rubble, four mass ratio
For 6：8：23：63.
The construction technology that a kind of road surface of this implementation is quickly repaired, the construction technology be the same as Example 8.
Embodiment 10
A kind of dry powder and mortar of the present embodiment and a kind of cement mortar be the same as Example 2, a kind of asphalt macadam of the present embodiment
Compound, the Design Air Voids of the macadam-aggregate mix are 22%, and bitumen aggregate ratio is 3.9%, and the bituminous concrete moxture contains
Miberal powder and particle size are respectively 1.18~2.36mm, 4.75~9.5mm, 9.5~13.2mm rubble, four mass ratio
For 3：12：21：64.
The construction technology that a kind of road surface of this implementation is quickly repaired, the construction technology be the same as Example 8.
Embodiment 11
A kind of dry powder and mortar, cement mortar and construction technology be the same as Example 10 of the present embodiment, the cement bonded sand of the present embodiment
Concrete grout contains the component of following mass fraction：78% bituminous concrete moxture, 4.4% water, 17.6% dry powder and mortar.
The preparation of the cement mortar of embodiment 12
Cement mortar is prepared in situ using mortar mill.Dry powder and mortar, which adds water, to be stirred up to material uniformity, according to
Guangdong Province's provincial standard《Dedicated mortar half-flexible pavement application technology specification》(DB44/T1296-2014) method determines mortar
Fluidity；According to《Strength of cement mortar is tested》JTGE30-2005 (T0505-2005T0506-2005) test method, makes mark
Quasi- cement mortar specimen (160mm × 40mm × 40mm), measures the intensity of cement mortar；The property of cement mortar in embodiment 1~3
Energy measurement result is shown in Table 1.
The performance measurement result of the cement mortar of table 1
From table 1 it follows that the cement mortar that the present invention is prepared has good slamp value, resists and tear intensity and fault block open
Cement mortar in resistance to compression tensile strength, especially embodiment 2 have preferably slamp value, anti-tear intensity and fault block resistance to compression tensile strength open；
The cement mortar of the present invention pours compound, can improve the compression strength on water-setting mortar concrete road surface.
Embodiment 13
Field sampling is carried out by the cement mortar concrete prepared to embodiment 1~3, standard concrete cube is made
Test specimen (150mm × 150mm × 150mm), according to《Concrete cube compression test》JTG E30-2005(T0553-2005)
Test method, measures the cubic compressive strength of macadam-aggregate mix cement mortar concrete material；Make standard concrete bending resistance
Test specimen (550mm × 150mm × 150mm) is drawn, according to《Concrete tensile strength is tested》JTG E30-2005(T0558-
2005) test method, measures the bending tensile strength of macadam-aggregate mix cement mortar concrete, macadam-aggregate mix cement mortar coagulation
The intensity of soil is shown in Table 2.
The compression strength and bending tensile strength of the macadam-aggregate mix cement mortar concrete of table 2
From Table 2, it can be seen that the macadam-aggregate mix cement mortar concrete that the present invention is prepared has good resistance to compression
Macadam-aggregate mix cement mortar concrete in intensity and bending tensile strength, especially embodiment 6 have preferably compression strength and
Bending tensile strength；The macadam-aggregate mix cement mortar concrete of the present invention can strengthen the intensity on maintenance road surface, improve road surface
Repair quality.
Embodiment 14
Core boring sampling is carried out by the cement mortar concrete road surface to embodiment 11, cement mortar semi-flexible can be investigated
Situations such as thickness of road deck, filling rate.During detection, grab sample is carried out to detection section using Φ 100mm core drilling machine, and
To taken surface layer core sample by《Highway engineering cement and cement concrete experiment rule》Journey (JTGE30-2005) is determined after thickness, is pressed
《Highway engineering pitch and Asphalt Mixture Experiment code》(JTG E20-2011) carries out maximum theoretical relative density examination to core sample
Test, determine the filling rate of dedicated mortar half-flexible pavement test specimen dedicated mortar, result of the test is shown in Table 3.
The testing result of the half-flexible pavement core sample filling rate of table 3
As can be seen from Table 3：Core sample voidage after grouting is less than 6%, and its result meets《Dedicated mortar half-flexible pavement
Application technology specification》The relevant regulations of (DB44/T 1296-2014)；Road surface core sample filling rate is 92.2%~94.7%, and it is tied
Fruit meets《Dedicated mortar half-flexible pavement application technology specification》The relevant regulations of (DB44/T 1296-2014).
Corresponding research is carried out with the cement mortar in other embodiment of the present invention, cement mortar concrete road surface,
The result of the test similar to embodiment 12~14 can be obtained.
Finally, it should be noted that above example is to illustrate technical scheme rather than to present invention protection
The limitation of scope, although being explained in detail with reference to preferred embodiment to the present invention, one of ordinary skill in the art should manage
Solution, technical scheme can be modified or replaced on an equal basis, without departing from technical solution of the present invention essence and
Scope.
Claims (10)
1. the cement mortar concrete used is quickly repaired on a kind of road surface, it is characterised in that：Comprising compound, dry powder and mortar and
Water, the compound is macadam-aggregate mix or bituminous concrete moxture, and the dry powder and mortar includes the component of following mass fraction：
Cement 30%~50%, sand 20%~40%, organic binder bond 2%~4%, active filler 10%~20%, shrinkage-minimizing agent 3%
~10%, water reducer 0.2%~0.5% and early strength agent 0.1%~1%.
2. cement mortar concrete as claimed in claim 1, it is characterised in that：The mass ratio of the water and the dry powder and mortar
For 0.2：1~0.25：1.
3. cement mortar concrete as claimed in claim 1 or 2, it is characterised in that：The macadam-aggregate mix is big comprising particle diameter
It is small be 13.2~16mm rubble and particle size be 19~26.5mm rubble, the Design Air Voids of the macadam-aggregate mix are
25%~40%.
4. cement mortar concrete as claimed in claim 3, it is characterised in that：The particle size is broken for 13.2~16mm's
The mass ratio for the rubble that stone and particle size are 19~26.5mm is 1：3~2：1.
5. cement mortar concrete as claimed in claim 4, it is characterised in that：The macadam-aggregate mix also includes particle size
For 4.75~13.2mm rubble, rubble that the particle size is 4.75~13.2mm, particle size are 13.2~16mm's
Rubble and particle size are that the mass ratio of 19~26.5mm rubbles is 15~45：30~50：25~35.
6. cement mortar concrete as claimed in claim 1 or 2, it is characterised in that：The design of the bituminous concrete moxture
Voidage is 20%~30%, and the bitumen aggregate ratio of the bituminous concrete moxture is 1.5%~4%.
7. cement mortar concrete as claimed in claim 6, it is characterised in that：The bituminous concrete moxture comprising miberal powder,
The rubble and particle size that rubble that particle size is 1.18~2.36mm, particle size are 4.75~9.5mm be 9.5~
13.2mm rubble, rubble that the miberal powder, particle size are 1.18~2.36mm, particle size are the broken of 4.75~9.5mm
The mass ratio for the rubble that stone and particle size are 9.5~13.2mm is 2~6：6~12：21~23：63~68.
8. cement mortar concrete as claimed in claim 7, it is characterised in that：The cement mortar concrete includes following matter
Measure the component of fraction：Bituminous concrete moxture 78%, dry powder cement mortar 17.6%, water 4.4%；The bituminous concrete moxture
Design Air Voids be 22%, the bitumen aggregate ratio of bituminous concrete moxture is 3.9%；The miberal powder, particle size be 1.18~
The rubble mass ratio that the rubble and particle size that 2.36mm rubble, particle size are 4.75~9.5mm are 9.5~13.2mm is
3：12：21：64.
9. a kind of carry out the construction method that road surface is quickly repaired using the cement mortar concrete as described in claim 1~8, it is special
Levy and be：Comprise the following steps：
1) former disease plate is removed；2) compound is laid；3) cement mortar is prepared：Dry powder and mortar and water are added to mixing plant
In be stirred；4) to step 2) laying mix surface joints cement mortar；5) strike off, conserve road surface.
10. construction method as claimed in claim 9, it is characterised in that：Step 2) lay the bituminous concrete moxture when, even
It is continuous to lay multiple plates and be not provided with seam.
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| CN103242002A (en) * | 2013-05-09 | 2013-08-14 | 广州大学 | Cold-mix semi-flexible composite pavement material and preparation method thereof |
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Application publication date: 20170808 |