CN107673683A - Reinforcing strip pouring procedure and expansive concrete and concrete seamless construction method - Google Patents
Reinforcing strip pouring procedure and expansive concrete and concrete seamless construction method Download PDFInfo
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- CN107673683A CN107673683A CN201710916619.0A CN201710916619A CN107673683A CN 107673683 A CN107673683 A CN 107673683A CN 201710916619 A CN201710916619 A CN 201710916619A CN 107673683 A CN107673683 A CN 107673683A
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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
- C04B28/02—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 containing hydraulic cements other than calcium sulfates
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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Abstract
The present invention relates to a kind of reinforcing strip pouring procedure and expansive concrete and concrete seamless construction method, following component is in terms of percentage：100 150 parts of concrete, 35 parts of cement, 0.9 1.3 parts of second class powered coal ashes, 0.25 0.45 parts of pumping admixtures, 8 15 parts of AEA swelling agents, 12 parts of hydroscopic high-molecular resins and 0.5 10 especially add diluent.Common concrete expansion rate is about 0.002%, compensation contractility deficiency, so as to cause jointless construction to be difficult to, and by adding AEA swelling agents in concrete（Bulking agent of calcium aluminate）, after additional diluent and hydroscopic high-molecular resin, the expansion rate of concrete can beat 0.02% 0.04%, expansive concrete produces expansion in hardening process, under reinforcing bar and ortho position constraint, reinforcing bar tension, and concrete compression.The compressive pre-stress that expansion reinforcing band is established, with concrete resistance contraction distortion caused by tension can reach compensation balance, this is the key of seamless design.
Description
Method field
The present invention relates to a kind of concrete construction method, more particularly to reinforcing strip pouring procedure and expansive concrete and concrete without
Stitch construction method.
Background method
It is to prevent monolithic reinforced concrete structure because autogenous shrinkage is uneven or sedimentation inequality can in construction that post-cast strip, which is,
Harmful cracks caused by energy, according to design or job specfication requirement, stay what is set to apply temporarily in sole plate, wall, beam relevant position
Work is stitched.
If structure is temporarily divided into stem portion by post-cast strip, shunk by component inside, poured again after some time and smash this
Construction joint concrete, structure is linked to be to overall area.When pouring the time and preferably selecting temperature relatively low of post-cast strip, can be with pouring water
The concrete of micro aluminium powder is mixed in mud or cement, its strength grade should one-level higher than component strength, prevent between New-old concrete
There is crack, cause weak part.The position of post-cast strip is set it should also be taken into account that the different Elements Of Expense of the measure such as template.
If publication No. is a kind of alter-pouring strips mould plate disclosed in the Chinese patent of " CN106996190A " and post-cast strip cast
Method, prevent concrete by cracking caused by temperature stress and drying shrinkage stress by setting post-cast strip.
But this construction method generally sets one of post-cast strip in the application of reality in every 30-40 rice, ventilation is dried in the air
Put 40-50 days and then pour into a mould expansive concrete；This form of construction work can cause the engineering time to extend；But this seamless apply
Requirement in work to concrete is higher, it is necessary to a kind of higher concrete of expansion rate, and concrete expansion rate of the prior art
It is only capable of reaching 0.02%, we provide a kind of expansion rate larger expansive concrete herein.
The content of the invention
It is an object of the invention to provide a kind of expansive concrete, the jointless construction available for super-long structural.
The purpose of above method of the present invention, scheme was achieved by the following method：A kind of expansive concrete, below
Component is by weight：
It is an object of the invention to provide a kind of reinforcing strip pouring procedure.
The purpose of above method of the present invention, scheme was achieved by the following method：A kind of reinforcing strip pouring procedure,
It is characterised in that it includes following steps：
S1：Set on ground and place reinforcing plate plank sheathing, and reinforcing bar is provided with reinforcing strip, reinforcing strip is stretched out at reinforcing bar both ends
1.8-2.2m；
S2：Concrete fast-easy closing-up net with galvanized steel plain sheet is separated into reinforcing strip, reinforcing strip is separated into some sections, and use
Stirrup of putting more energy into strengthens fast easy-to-closing web frame；
S3：Concrete vibration bar is done into machinery to concrete to vibrate；
S4：According to the trickling length of concrete, when close to drawing requirement reinforcing strip position, change described in claim 1
Expansive concrete pours；
S5：Repair surface non-structural crack and cover by grid film and plastic sheeting of the high polymer material through knitting device；
S6：Material of the Plastic film surface covering with good thermal insulation property；
S7：By be covered in surface be used for be incubated material, plastic sheeting and grid film remove after, in time spray temperature be 25-40
DEG C clear water, grid film, plastic sheeting and material for insulation are sequentially coated on its surface after spray, keep coagulation
The environment temperature of soil is more than 80%；
S8：Plank sheathing is removed after being poured, the filled rubber waterstop in the gap of formation.
Preferably, in the step 3, for concrete vibration bar when vibrating, spacing is more than 300mm between each slotting point,
A vibrating time of often shaking is 20-30s.
It is an object of the invention to provide a kind of concrete seamless construction method, continuous placing is applied in a manner of setting reinforcing strip
Work solves the problems, such as temperature shrinkage fracture.
The purpose of above method of the present invention, scheme was achieved by the following method：A kind of concrete seamless construction party
Method, comprise the following steps：
Step 1：Floor leveling processing；
Step 2：Ground sets some reinforcing strips staggeredly；
Step 3：Reinforcing strip sidepiece sets bar-mat reinforcement
Step 4：Concrete is poured into a mould outside reinforcing strip, and the expansive concrete being prepared in claim 1 is in reinforcing strip
Poured into a mould；
Step 5：Dry 40-50h；
Step 6：Concrete spraying physiological saline of the interval into reinforcing strip, and continue with what is be prepared in claim 1
Concrete fill up in reinforcing strip and reinforcing strip it is outer between gap；
Step 7：Repeat step 4 is until cast terminates.
Preferably, in the step 2, building bottom shape is square, and reinforcing strip is horizontal, is longitudinally set with and puts；Building bottom surface
Circle is shaped as, reinforcing strip is set along radius and perpendicular radii direction.
Preferably, in the step 2, adjacent reinforcing strip spacing is 20-30m, width 1.5-2.2m.
Preferably, in the step 4, the discrepancy in elevation of the inside and outside cast of reinforcing strip is less than 20cm.
Preferably, it is provided with some reinforcements between the adjacent reinforcing strip.
Preferably, in the step 6 using point off formula fill up reinforcing strip and reinforcing strip it is outer between gap.
In summary, the invention has the advantages that：
(1) cast-in-place concrete concrete in casting process of constructing can produce the deformation such as contraction, expansion and temperature of non-stress, be
This non-stress deformation is avoided to adversely affect structure, it usually needs movement joint is set, and post-cast strip is then to transport now
With a kind of commonplace movement joint, it is a kind of temporary construction seam, after this gap retains one end time according to design requirement
Pour into a mould again, total is linked to be entirety；This form of construction work can cancel traditional stayed in structure and set permanent sedimentation, stretch
Thus contracting seam, so as to solve building settlement, expansion joint caused aging and damage during use in the future, is eliminated
Bring the trouble and worry of repeatedly maintenance etc..Using being favourable to antidetonation, the waterproof of building structure after the technology of post-cast strip, and can
To be greatly simplified the processing of architectural construction, material has been saved.
(2) expansive concrete is a kind of concrete of treated special substance, is mainly used in the seamless of super-long structural
Construction, and in this form of construction work, common concrete expansion rate is about 0.002%, compensation contractility deficiency, so as to
Jointless construction is caused to be difficult to, and by adding AEA swelling agents (bulking agent of calcium aluminate), additional dilution in concrete
After agent and hydroscopic high-molecular resin, the expansion rate of concrete can reach 0.02%-0.04%, ratio of reinforcement L=0.2~
When 018%, under the constraint of reinforcing bar etc., 0.2-0.7MPa compressive pre-stress can be produced in concrete, this compressive pre-stress is substantially
Caused shrinkage tensile stress in course of hardening can be offset, so that structure is not split or Crack Control in harmless scope
It is interior.After mixing concrete in AEA incorporation cement, before its expansion occurs mainly in 14d, for the dry of compensating concrete
Contracting, but still have minimum amount dilation in the middle and later periods, its caused compressive pre-stress can not only offset tension caused by concrete shrinkage, together
When can also improve the intensity of concrete.According to above-mentioned condition, match ratio reduces coagulation in the case where meeting construction technology as far as possible
The slump of soil fills second class powered coal ash, reduces cement consumption, reduce the heat of hydration, macromolecule is inhaled to reduce the contraction of concrete
Water-resin can occur slightly to expand after meeting water, and the concrete after expansion has a certain amount of elasticity, is filled with concrete
In, the expansion rate of concrete can be increased simultaneously with AEA, secondly hydroscopic high-molecular resin filling can increase the water of concrete wherein
Humidity, it can both avoid excess moisture in concrete from causing the concrete consuming longer time after cast to be dried, can also keep away
Exempt from the concrete after drying shrinkage and the dry and cracked situation for opening contracting occurs because of wherein hypovolia；
(3) expansive concrete produces expansion in hardening process, under reinforcing bar and ortho position constraint, reinforcing bar tension, and coagulation
Soil is pressurized, when reinforcing bar tension and coagulation soil compressive stress balance, then：Ac. σ c=As.Es. ε2If：μ=As/Ac, then σ=μ
Es.E2, in formula, σ c are pre- (c) compression (MPa) of concrete；As is reinforcing steel area；μ is the ratio of reinforcement (%)；Ac is coagulation
Native sectional area；Es is reinforcing bar modulus of elasticity (MPa)；E2 is the limited expansion rate (%) of concrete.It can be seen that σ and ε2It is in direct ratio
Relation, and limited expansion rate ε2Increase with (c) UEA volume increase, so, by adjusting AEA volume, expansion can be added
0.2~0.7MPa compressive pre-stress is obtained with concrete by force.The compressive pre-stress that expansion reinforcing band is established, resist and receive with concrete
Tension caused by compression deformation can reach compensation balance, and this is the key of seamless design；
(4) reinforcing strip completes the cast of reinforcing strip by eight steps in casting process, will strengthen the wooden model of structure first
Plate is placed on the ground, is provided with reinforcing bar in reinforcing strip afterwards and is further strengthened its structure, and utilizes fast-easy closing-up net point
Every reinforcing strip, reinforcing strip is separated into some sections；According to the trickling length of concrete during cast, in the opening position close to reinforcing strip
Normal concrete is replaced with into expansive concrete to be poured into a mould, the crack on surface repaired after being poured, and by grid
Film and plastic sheeting are sequentially attached to reinforcement belt surface, and concrete surface is wiped one's face, conserved, expansive concrete only compared with
For the expansion performance of competence exertion expansive concrete under suitable humidity, but the hydroscopic high-molecular resin tool in expansive concrete
There is the performance of preferably storage water, therefore can solve this problem to a certain extent；
(5) relevant building is during pouring into a mould and building, in advance to ground leveling, according to the design shape of building,
Some reinforcing strips staggeredly are provided between adjacent reinforcing strip, and bar-mat reinforcement is arranged on reinforcing strip sidepiece, by concrete
Overall structural strength can be strengthened by being arranged on the outside of reinforcing strip；Concrete is dried into 40-50h after being poured, backward reinforcement
Expansive concrete sprinkling physiological saline, because of the concrete spraying physiological saline containing hydroscopic high-molecular resin, passes through the above in band
The water content in hydroscopic high-molecular resin is tended towards stability after operation, and will be formed by the way of point off formula inside and outside reinforcing strip
Gap be filled, the opening position under sky pre- is left room for for the expansion etc. of concrete.
Embodiment
The present invention is described in further detail below.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, art processes people
Member can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but as long as at this
All protected in the right of invention by Patent Law.
Embodiment 1：
A kind of expansive concrete, take clean container, thereto add 100 parts of concrete, 3 parts of cement, 0.9 part of second class powered coal ash,
0.25 part of pumping admixture and 8 parts of AEA swelling agents, 1 part of hydroscopic high-molecular resin, 0.5 especially adds diluent, and diluent can use clear
Water, control temperature at the uniform velocity stir between 25 DEG C -25 DEG C.
Embodiment 2：
A kind of expansive concrete, take clean container, thereto add 150 parts of concrete, 5 parts of cement, 1.3 parts of second class powered coal ashes,
0.45 part of pumping admixture and 15 parts of AEA swelling agents, 2 parts of hydroscopic high-molecular resins, 10 especially add diluent, and diluent can use clear
Water, control temperature at the uniform velocity stir between 25 DEG C -25 DEG C.
Embodiment 3：
A kind of expansive concrete, take clean container, thereto add 125 parts of concrete, 4 parts of cement, 1.1 parts of second class powered coal ashes,
0.3 part of pumping admixture and 12 parts of AEA swelling agents, 1.5 parts of hydroscopic high-molecular resins, 5 especially add diluent, and diluent can use clear
Water, control temperature at the uniform velocity stir between 25 DEG C -25 DEG C.
Embodiment 4：
A kind of expansive concrete, clean container is taken, add 100 parts of concrete, 2.8 parts of cement, 1.1 parts of two level fine coal thereto
Ash, 0.28 part of pumping admixture and 10.8 parts of AEA swelling agents, 1.12 parts of hydroscopic high-molecular resins, 4.83 especially add diluent, dilute
Clear water can be used by releasing agent, and control temperature at the uniform velocity stirs between 25 DEG C -25 DEG C.
Embodiment 5：
A kind of expansive concrete, clean container is taken, add 100 parts of concrete, 2.8 parts of cement, 1.1 parts of two level fine coal thereto
Ash, 0.28 part of pumping admixture and 6 are especially plus diluent, diluent can use clear water, control temperature between 25 DEG C -25 DEG C, even
Speed stirring.
Performance test is carried out to the concrete being prepared in embodiment 1-5, entered using concrete shrinkage swellability measurement instrument
Row measure, and it is recorded in table 1；
Table 1：
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Expansion rate 1 | 0.02 | 0.03 | 0.02 | 0.03 | 0.01 |
| Expansion rate 2 | 0.02 | 0.03 | 0.03 | 0.04 | 0.02 |
| Expansion rate 3 | 0.03 | 0.02 | 0.03 | 0.03 | 0.02 |
| Expansion rate (average) | 0.023 | 0.027 | 0.027 | 0.033 | 0.017 |
Unit：%
It can be obtained according to table 1：Although the concrete being prepared in embodiment 5 also has certain expansion rate, by repeatedly trying
Test that the expansion rate obtained afterwards is not high, be insufficient for the condition of building basement concrete seamless construction；And in embodiment 1-4
The concrete expansion rate being prepared is significantly increased, and can meet the condition of building basement concrete seamless construction.
Embodiment 6：
A kind of pouring procedure of reinforcing strip, comprises the following steps：
S1：Set on ground and place reinforcing plate plank sheathing, and reinforcing bar is provided with reinforcing strip, reinforcing strip is stretched out at reinforcing bar both ends
1.8-2.2m, reinforcing strip 1.85m is stretched out at reinforcing bar both ends in this implementation；
S2：Concrete fast-easy closing-up net with galvanized steel plain sheet is separated into reinforcing strip, reinforcing strip is separated into some sections, and use
Stirrup of putting more energy into strengthens fast easy-to-closing web frame；
S3：Concrete vibration bar to be done into machinery to concrete to vibrate, when vibrating, each spacing inserted between point is more than 300mm,
A vibrating time of often shaking is 20-30s, and it is 350mm that each spacing inserted between point is controlled in the present embodiment, and radix shakes shaking a little
It is 28s to smash the time, and the vibrating time that even number shakes a little is 20s；
S4：According to the trickling length of concrete, when close to drawing requirement reinforcing strip position, it is replaced with embodiment 4 and is prepared into
To expansive concrete pour；
S5：Repair surface non-structural crack and cover by grid film and plastic sheeting of the high polymer material through knitting device, at this
In embodiment, grid film uses PP, after PP cuttings into strips, is formed through knitting device；
S6：Plastic film surface covering has the material of good thermal insulation property, and blanket quilt is used in the present embodiment；
S7：By be covered in surface be used for be incubated material, plastic sheeting and grid film remove after, in time spray temperature be 25-40
DEG C clear water, 32 DEG C are used in the present embodiment, covers grid film, plastic sheeting and material for insulation successively after spray
Cover and on its surface, keep the ambient humidity of concrete to be more than 80%；
S8：Plank sheathing is removed after being poured, the filled rubber waterstop in the gap of formation.
Embodiment 7：
A kind of pouring procedure of reinforcing strip, comprises the following steps：
S1：Set on ground and place reinforcing plate plank sheathing, and reinforcing bar is provided with reinforcing strip, reinforcing strip is stretched out at reinforcing bar both ends
1.8-2.2m, reinforcing strip 1.8m is stretched out at reinforcing bar both ends in this implementation；
S2：Concrete fast-easy closing-up net with galvanized steel plain sheet is separated into reinforcing strip, reinforcing strip is separated into some sections, and use
Stirrup of putting more energy into strengthens fast easy-to-closing web frame；
S3：Concrete vibration bar to be done into machinery to concrete to vibrate, when vibrating, each spacing inserted between point is more than 300mm,
A vibrating time of often shaking is 20-30s, and it is 300mm that each spacing inserted between point is controlled in the present embodiment, and radix shakes shaking a little
It is 20s to smash the time, and the vibrating time that even number shakes a little is 30s；
S4：According to the trickling length of concrete, when close to drawing requirement reinforcing strip position, it is replaced with embodiment 4 and is prepared into
To expansive concrete pour；
S5：Repair surface non-structural crack and cover by grid film and plastic sheeting of the high polymer material through knitting device, at this
In embodiment, grid film uses PP, after PP cuttings into strips, is formed through knitting device；
S6：Plastic film surface covering has the material of good thermal insulation property, and blanket quilt is used in the present embodiment；
S7：By be covered in surface be used for be incubated material, plastic sheeting and grid film remove after, in time spray temperature be 25-40
DEG C clear water, 25 DEG C are used in the present embodiment, covers grid film, plastic sheeting and material for insulation successively after spray
Cover and on its surface, keep the ambient humidity of concrete to be more than 80%；
S8：Plank sheathing is removed after being poured, the filled rubber waterstop in the gap of formation.
Embodiment 8：
A kind of pouring procedure of reinforcing strip, comprises the following steps：
S1：Set on ground and place reinforcing plate plank sheathing, and reinforcing bar is provided with reinforcing strip, reinforcing strip is stretched out at reinforcing bar both ends
1.8-2.2m, reinforcing strip 2.2m is stretched out at reinforcing bar both ends in this implementation；
S2：Concrete fast-easy closing-up net with galvanized steel plain sheet is separated into reinforcing strip, reinforcing strip is separated into some sections, and use
Stirrup of putting more energy into strengthens fast easy-to-closing web frame；
S3：Concrete vibration bar to be done into machinery to concrete to vibrate, when vibrating, each spacing inserted between point is more than 300mm,
A vibrating time of often shaking is 20-30s, and it is 400mm that each spacing inserted between point is controlled in the present embodiment, and radix shakes shaking a little
It is 30s to smash the time, and the vibrating time that even number shakes a little is 20s；
S4：According to the trickling length of concrete, when close to drawing requirement reinforcing strip position, it is replaced with embodiment 4 and is prepared into
To expansive concrete pour；
S5：Repair surface non-structural crack and cover by grid film and plastic sheeting of the high polymer material through knitting device, at this
In embodiment, grid film uses PP, after PP cuttings into strips, is formed through knitting device；
S6：Plastic film surface covering has the material of good thermal insulation property, and blanket quilt is used in the present embodiment；
S7：By be covered in surface be used for be incubated material, plastic sheeting and grid film remove after, in time spray temperature be 25-40
DEG C clear water, 40 DEG C are used in the present embodiment, covers grid film, plastic sheeting and material for insulation successively after spray
Cover and on its surface, keep the ambient humidity of concrete to be more than 80%；
S8：Plank sheathing is removed after being poured, the filled rubber waterstop in the gap of formation.
Embodiment 9：
A kind of concrete seamless construction method, comprises the following steps：
Step 1：Floor leveling processing, it is levelling or self-leveling cement is levelling using cement mortar surface, used in the present embodiment from
Levelling cement is levelling；
Step 2：Ground sets some reinforcing strips staggeredly；If building bottom shape yet to be built is square, reinforcing strip is in laterally
With longitudinal two ways set, and it is horizontal and vertical between be vertical setting；If building yet to be built is circle, reinforcing strip is along radius
Direction and perpendicular radii are reversed setting；If building yet to be built is irregular shape, if being marked off approximate regulation
Dry circular and square combination, sets reinforcing strip wherein respectively afterwards；The distance between adjacent reinforcing strip is 20-30m, often
The width of one reinforcing strip is 1.5-2.2m, and the width that reinforcing strip is controlled in the present embodiment is 1.5m, and control adjacent reinforcing strip it
Between distance be 20m；Some reinforcements are set between adjacent reinforcing strip, using φ 16mm reinforcement.
Step 3：Reinforcing strip sidepiece sets bar-mat reinforcement；Bar-mat reinforcement is interlocked and handed over using a length of 0.5mm in footpath reinforcing bar longitude and latitude
Mistake spot welding aftershaping, the bar-mat reinforcement prepared is arranged on reinforcing strip both sides and apart from reinforcing strip 2cm,
Step 4：Concrete is poured into a mould outside reinforcing strip, is poured into a mould using common silicate concrete, is made in embodiment 4
Standby obtained expansive concrete is poured into a mould in reinforcing strip, is cast in the difference in height control in reinforcing strip and being cast in outside reinforcing strip
System controls inside and outside difference in height in (8 ± 2) cm within 20cm, in the present embodiment；
Step 5：40-50h is dried, 40h is dried in the present embodiment, such as the shape state such as rainy day, is delayed one day backward；
Step 6：Concrete spraying physiological saline of the interval into reinforcing strip, and continue be prepared in embodiment 4 it is mixed
Solidifying soil fill up in reinforcing strip and reinforcing strip it is outer between gap；Seam between being filled up using point off formula outside reinforcing strip and reinforcing strip
Gap, concrete can produce the phenomenon of concrete shrinkage, concrete may be harmful to during this in the drying process
Volume Changes, but because the main composition of concrete is sandstone cement, the ratio heat energy of these materials is all smaller, thus by
Own temperature steeply rises after external heat, phenomena such as so as to cause concrete to expand or be dry and cracked, therefore in reinforcing strip
The concrete being prepared in embodiment 4 is filled using the filling mode of point off formula in the gap of inside and outside formation, this reality
Apply in example, every 40cm, fill 18cm concrete.
Step 7：Repeat step 6 is until cast terminates.
Embodiment 10：
A kind of concrete seamless construction method, comprises the following steps：
Step 1：Floor leveling processing, it is levelling or self-leveling cement is levelling using cement mortar surface, used in the present embodiment from
Levelling cement is levelling；
Step 2：Ground sets some reinforcing strips staggeredly；If building bottom shape yet to be built is square, reinforcing strip is in laterally
With longitudinal two ways set, and it is horizontal and vertical between be vertical setting；If building yet to be built is circle, reinforcing strip is along radius
Direction and perpendicular radii are reversed setting；If building yet to be built is irregular shape, if being marked off approximate regulation
Dry circular and square combination, sets reinforcing strip wherein respectively afterwards；The distance between adjacent reinforcing strip is 20-30m, often
The width of one reinforcing strip is 1.5-2.2m, and the width that reinforcing strip is controlled in the present embodiment is 2.2m, and control adjacent reinforcing strip it
Between distance be 30m；Some reinforcements are set between adjacent reinforcing strip, using φ 16mm reinforcement.
Step 3：Reinforcing strip sidepiece sets bar-mat reinforcement；Bar-mat reinforcement is interlocked and handed over using a length of 0.5mm in footpath reinforcing bar longitude and latitude
Mistake spot welding aftershaping, the bar-mat reinforcement prepared is arranged on reinforcing strip both sides and apart from reinforcing strip 2cm,
Step 4：Concrete is poured into a mould outside reinforcing strip, is poured into a mould using common silicate concrete, is made in embodiment 4
Standby obtained expansive concrete is poured into a mould in reinforcing strip, is cast in the difference in height control in reinforcing strip and being cast in outside reinforcing strip
System controls inside and outside difference in height in (12 ± 2) cm within 20cm, in the present embodiment；
Step 5：40-50h is dried, 50h is dried in the present embodiment, such as the shape state such as rainy day, is delayed one day backward；
Step 6：Concrete spraying physiological saline of the interval into reinforcing strip, and continue be prepared in embodiment 4 it is mixed
Solidifying soil fill up in reinforcing strip and reinforcing strip it is outer between gap；Seam between being filled up using point off formula outside reinforcing strip and reinforcing strip
Gap, concrete can produce the phenomenon of concrete shrinkage, concrete may be harmful to during this in the drying process
Volume Changes, but because the main composition of concrete is sandstone cement, the ratio heat energy of these materials is all smaller, thus by
Own temperature steeply rises after external heat, phenomena such as so as to cause concrete to expand or be dry and cracked, therefore in reinforcing strip
The concrete being prepared in embodiment 4 is filled using the filling mode of point off formula in the gap of inside and outside formation, this reality
Apply in example, every 40cm, fill 18cm concrete.
Step 7：Repeat step 6 is until cast terminates.
Embodiment 11：
A kind of concrete seamless construction method, comprises the following steps：
Step 1：Floor leveling processing, it is levelling or self-leveling cement is levelling using cement mortar surface, used in the present embodiment from
Levelling cement is levelling；
Step 2：Ground sets some reinforcing strips staggeredly；If building bottom shape yet to be built is square, reinforcing strip is in laterally
With longitudinal two ways set, and it is horizontal and vertical between be vertical setting；If building yet to be built is circle, reinforcing strip is along radius
Direction and perpendicular radii are reversed setting；If building yet to be built is irregular shape, if being marked off approximate regulation
Dry circular and square combination, sets reinforcing strip wherein respectively afterwards；The distance between adjacent reinforcing strip is 20-30m, often
The width of one reinforcing strip is 1.5-2.2m, and the width that reinforcing strip is controlled in the present embodiment is 1.8m, and control adjacent reinforcing strip it
Between distance be 25m；Some reinforcements are set between adjacent reinforcing strip, using φ 16mm reinforcement.
Step 3：Reinforcing strip sidepiece sets bar-mat reinforcement；Bar-mat reinforcement is interlocked and handed over using a length of 0.5mm in footpath reinforcing bar longitude and latitude
Mistake spot welding aftershaping, the bar-mat reinforcement prepared is arranged on reinforcing strip both sides and apart from reinforcing strip 2cm,
Step 4：Concrete is poured into a mould outside reinforcing strip, is poured into a mould using common silicate concrete, is made in embodiment 4
Standby obtained expansive concrete is poured into a mould in reinforcing strip, is cast in the difference in height control in reinforcing strip and being cast in outside reinforcing strip
System controls inside and outside difference in height in (18 ± 2) cm within 20cm, in the present embodiment；
Step 5：40-50h is dried, 45h is dried in the present embodiment, such as the shape state such as rainy day, is delayed one day backward；
Step 6：Concrete spraying physiological saline of the interval into reinforcing strip, and continue be prepared in embodiment 4 it is mixed
Solidifying soil fill up in reinforcing strip and reinforcing strip it is outer between gap；Seam between being filled up using point off formula outside reinforcing strip and reinforcing strip
Gap, concrete can produce the phenomenon of concrete shrinkage, concrete may be harmful to during this in the drying process
Volume Changes, but because the main composition of concrete is sandstone cement, the ratio heat energy of these materials is all smaller, thus by
Own temperature steeply rises after external heat, phenomena such as so as to cause concrete to expand or be dry and cracked, therefore in reinforcing strip
The concrete being prepared in embodiment 4 is filled using the filling mode of point off formula in the gap of inside and outside formation, this reality
Apply in example, every 40cm, fill 18cm concrete.
Step 7：Repeat step 6 is until cast terminates.
Claims (9)
1. a kind of expansive concrete, it is characterised in that following component is in parts by weight：
Concrete 100-150 parts
Cement 3-5 parts
Second class powered coal ash 0.9-1.3 parts
Pumping admixture 0.25-0.45 parts
AEA swelling agent 8-15 parts
Hydroscopic high-molecular resin 1-2 parts
Additional diluent 0.5-10 parts.
2. a kind of reinforcing strip pouring procedure, it is characterised in that comprise the following steps：
S1：Set on ground and place reinforcing plate plank sheathing, and reinforcing bar is provided with reinforcing strip, reinforcing strip is stretched out at reinforcing bar both ends
1.8-2.2m；
S2：Concrete fast-easy closing-up net with galvanized steel plain sheet is separated into reinforcing strip, reinforcing strip is separated into some sections, and use
Stirrup of putting more energy into strengthens fast easy-to-closing web frame；
S3：Concrete vibration bar is done into machinery to concrete to vibrate；
S4：According to the trickling length of concrete, when close to drawing requirement reinforcing strip position, change described in claim 1
Expansive concrete pours；
S5：Repair surface non-structural crack and cover by grid film and plastic sheeting of the high polymer material through knitting device；
S6：Material of the Plastic film surface covering with good thermal insulation property；
S7：By be covered in surface be used for be incubated material, plastic sheeting and grid film remove after, in time spray temperature be 25-40
DEG C clear water, grid film, plastic sheeting and material for insulation are sequentially coated on its surface after spray, keep coagulation
The ambient humidity of soil is more than 80%；
S8：Plank sheathing is removed after being poured, the filled rubber waterstop in the gap of formation.
A kind of 3. reinforcing strip pouring procedure according to claim 2, it is characterised in that：In the step 3, vibratory concrete
For rod when vibrating, spacing is more than 300mm between each slotting point, and a vibrating time of often shaking is 20-30s.
4. a kind of concrete seamless construction method, it is characterised in that comprise the following steps：
Step 1：Floor leveling processing；
Step 2：Ground sets some reinforcing strips staggeredly；
Step 3：Reinforcing strip sidepiece sets bar-mat reinforcement；
Step 4：Concrete is poured into a mould outside reinforcing strip, and the expansive concrete being prepared in claim 1 is in reinforcing strip
Poured into a mould；
Step 5：Dry 40-50h；
Step 6：Concrete spraying physiological saline of the interval into reinforcing strip, and continue with what is be prepared in claim 1
Concrete fill up in reinforcing strip and reinforcing strip it is outer between gap；
Step 7：Repeat step 6 is until cast terminates.
A kind of 5. concrete seamless construction method according to claim 4, it is characterised in that：In the step 2, building
Bottom shape is square, and reinforcing strip is horizontal, is longitudinally set with and puts；Building bottom shape is circle, and reinforcing strip is along radius and perpendicular radii side
To setting.
A kind of 6. concrete seamless construction method according to claim 4, it is characterised in that：It is adjacent to add in the step 2
Strong band spacing is 20-30m, width 1.5-2.2m.
A kind of 7. concrete seamless construction method according to claim 5, it is characterised in that：In the step 4, reinforcing strip
The discrepancy in elevation of inside and outside cast is less than 20cm.
A kind of 8. concrete seamless construction method according to claim 4, it is characterised in that：Between the adjacent reinforcing strip
It is provided with some reinforcements.
A kind of 9. concrete seamless construction method according to claim 4, it is characterised in that：Point is used in the step 6
Disconnected formula fill up reinforcing strip and reinforcing strip it is outer between gap.
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