CN101016718A - Influent polymer cement concrete pavement structure on cement concrete and construction method therefor - Google Patents
Influent polymer cement concrete pavement structure on cement concrete and construction method therefor Download PDFInfo
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- CN101016718A CN101016718A CN 200710078221 CN200710078221A CN101016718A CN 101016718 A CN101016718 A CN 101016718A CN 200710078221 CN200710078221 CN 200710078221 CN 200710078221 A CN200710078221 A CN 200710078221A CN 101016718 A CN101016718 A CN 101016718A
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- 239000004567 concrete Substances 0.000 title claims abstract description 118
- 239000004568 cement Substances 0.000 title claims abstract description 99
- 239000011388 polymer cement concrete Substances 0.000 title claims abstract description 52
- 238000010276 construction Methods 0.000 title claims abstract description 21
- 239000010410 layer Substances 0.000 claims abstract description 12
- 229920000642 polymer Polymers 0.000 claims description 75
- 239000000945 filler Substances 0.000 claims description 27
- 239000002344 surface layer Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000004576 sand Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 7
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000001680 brushing effect Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 230000007480 spreading Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 2
- 239000002671 adjuvant Substances 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- 229920002313 fluoropolymer Polymers 0.000 claims description 2
- 239000004811 fluoropolymer Substances 0.000 claims description 2
- 239000010881 fly ash Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- KNXVOGGZOFOROK-UHFFFAOYSA-N trimagnesium;dioxido(oxo)silane;hydroxy-oxido-oxosilane Chemical compound [Mg+2].[Mg+2].[Mg+2].O[Si]([O-])=O.O[Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O KNXVOGGZOFOROK-UHFFFAOYSA-N 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims 1
- 229920002959 polymer blend Polymers 0.000 abstract description 3
- 239000007921 spray Substances 0.000 abstract description 2
- 239000004575 stone Substances 0.000 abstract description 2
- 239000012790 adhesive layer Substances 0.000 abstract 3
- 230000032683 aging Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 14
- 239000011398 Portland cement Substances 0.000 description 8
- 239000010426 asphalt Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000011433 polymer cement mortar Substances 0.000 description 1
- 239000002986 polymer concrete Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
A flow polymer cement concrete road above cement concrete and relative construction comprise a cement concrete bottom layer 3 and a plated adhesive layer 2, wherein above the adhesive layer 2, the invention uses single-stage stage or intermission-stage broke stone to form porous cement concrete, to be laid and flattened, vibrates the porous cement concrete, and sprays the polymer mixture mechanically on the face of concrete, to flow the polymer mixture into the porous cement concrete, then stuffs some holes in the concrete, to form a flow polymer cement concrete face layer 1. The inventive face layer 1 has high strength, anti-crack property, waterproof property and aging resistance or the like, while the adhesive layer 2 can integrate the face layer and the pitch face layer 3, to bear force together.
Description
One, technical field
The present invention relates to pavement engineering and job practicess thereof such as highway construction, inflow formula polymer cement concrete pavement face structure and job practices on especially a kind of cement concrete.
Two, background technology
1, cement concrete material and job practices thereof
Cement concrete material is a kind of widely known constructional materials, though concrete development has only the history in more than 100 year, nowadays become most widely used in the world wide, consumption is maximum, the constructional materials that almost is seen everywhere.Cement concrete with the cement slurry of inorganic material as adhesive material, bonding rubble and sand.The cement concrete of plastic state has certain fluidity, and closely knit for the inside concrete after guaranteeing to solidify, the general Vibration Technology that adopts is constructed during cast plastic state concrete, and cement paste solidifies the back and forms hard concrete as building stones.The characteristics that it has the convenience of drawing materials, construction is simple, intensity is high, can make arbitrary shape.Yet cement concrete material has himself unsurmountable weakness: the early solidification amount of contraction is big, the inner initial imperfection that easily produces; It is poor, easy to crack to adapt to deformability, and therefore people are devoted to the research of cement concrete modifying always for a long time.
In recent years, the appearance of polymer modified cement-concrete---concrete organising---makes this material of concrete go on a new developing stage again.Polymer modified cement-concrete is with polymer or polymer emulsion modified cement, and with polymer water mud or polymer emulsion modified cement paste as adhesive material, bonding rubble and sand.The resistance to compression of polymer modified cement-concrete, tension, impact strength all are improved largely, and have high erosion-resisting characteristics, and have the adaptable distinguishing feature of deformability, thereby have obtained using comparatively widely.
Polymer modified cement-concrete mainly as concrete repair material, ornament materials and house earth surface paver, also has fragmentary utilization in Structural Engineering, road surface and bridge floor at present.The construction technology of polymer modified cement-concrete has two kinds: 1. when wherein aggregate size is big, adopt and the identical technology of portland cement concrete construction: require polymer modified cement-concrete that bigger flowability is arranged, slump is generally at 3-5cm, cast back vibration compacting, general making thickness is 2-4cm; 2. the particle diameter that ought wherein gather materials hour requires polymer modified cement-concrete (being also referred to as polymer cement mortar) to have bigger flowability equally, adopts the mode that is similar to swabbing, and layering is brushed to the works surface, and general thickness is 0.5-2cm.Preceding a kind of form of construction work is used for the making of house earth surface, a kind of repairing, the decoration etc. of then being used in back.
In use there is following subject matter in existing polymer modified cement-concrete material: when adopting above-mentioned first kind of technology, because the contraction of polymer modified cement-concrete is general always greater than portland cement concrete, even best its amount of contraction of polymer modified cement-concrete of shrinkage is also only identical with ordinary concrete, therefore the shrinkage-compensating seam must be set during the polymer modified cement-concrete paving, can not continuous laying.When adopting second kind of construction technology, in order to guarantee that polymer modified cement-concrete does not ftracture, in the unit volume polymer modified cement-concrete amount of polymeric material big, involve great expense, in addition, the thickness that the technology of layering brushing once forms less (being not more than 1cm), therefore second kind of pavement of road (general all more than 4cm) laying that construction technology generally can not be used for large tracts of land and have certain thickness requirement.
2, the problem of existing polymer cement concrete existence
Conventional polymer cement concrete is that polymer, cement, rubble, sand etc. are mixed uniform mixing, the polymer cement concrete of formation, and then the work that paves, and what finally form is the polymer cement concrete of compact structure.Because therefore the polymer cement concrete properties of materials, a lot of problems can occur in the construction, is difficult to implement in engineering.This also just polymer cement concrete be difficult to the reason of large-scale promotion application in engineering.
3, the problem of the existence of the overlay on the cement concrete
When the cement concrete bottom need overlay, present way had two kinds: the one, overlay bitumen layer thereon, and the 2nd, making Portland Cement Concrete Surface Course thereon.When the making Portland Cement Concrete Surface Course, general thickness is thicker, and waste is bigger economically; When the making bitumen layer, because the cement concrete of the poor durability of pitch class material and bottom bonding is poor, so service life is short, still may need after several years to overlay the comprehensive cost costliness.
Three, summary of the invention
The purpose of this invention is to provide a kind of simple in structure, easy construction, adopt inflow formula polymer cement concrete pavement face structure and job practices on the formed cement concrete of inflow formula polymer cement concrete, for a kind of new selection and the new method of providing is provided on the cement concrete.
The present invention is provided with tack coat on cement concrete, form the honeycombed cement concrete that is rich in hole more thereon, flows into polymer composition then in hole, forms inflow formula polymer cement concrete surface layer.The honeycombed cement concrete organises cement concrete and is achieved after flowing into polymer composition, has strengthened concrete deformability, and fragility significantly reduces, thereby makes the mechanical property of material excellent more.Inflow formula polymer cement concrete surface layer bonds together by tack coat and cement concrete bottom, forms common stressed road structure, has the intensity height, and crack resistance is good, the characteristics of water-tolerant, anti-aging, good corrosion resistance.
The technical scheme that purpose of the present invention adopted is its structure: include the cement concrete bottom, be provided with tack coat in the cement concrete bottom surface, inflow formula polymer cement concrete surface layer is arranged on tack coat.
The present invention, the cement concrete bottom is the cement concrete that forms in advance or rolls cement concrete pavement, square, sidewalk etc.
The present invention, tack coat by polymer or polymer and filler is by weight ratio---polymer: the waterproof thin layer that the mixture that filler=1: 0～15 form is formed, can with cement concrete bottom and the inflow formula polymer cement concrete surface layer bonds well on it under it.
The present invention flows into formula polymer cement concrete surface layer and by flowing into polymer or polymer and filler in the honeycombed cement concrete is by weight---and polymer: the mixture that filler=1: 0 ~ 5 are formed forms.
The present invention, the used polymer of tack coat and the formula of inflow polymer cement concrete surface layer is fluoropolymer resin, polymer powder or polymer emulsion.
The present invention, tack coat with flow into that polymer used in the formula polymer cement concrete surface layer or the polymer mixture with the filler composition can add corresponding thinner or water dilutes, also can add corresponding adjuvants, the weight proportion of polymer and thinner or water, auxiliary agent is---polymer: thinner or water: auxiliary agent=1: 0～10: 0～2.
The present invention, filler is active filler, as cement, flyash etc., perhaps is inert filler, as calcium carbonate, French chalk, fine sand etc., perhaps is the mixture that different fillers is formed.
The present invention, honeycombed cement concrete in the inflow formula polymer cement concrete surface layer is made up of rubble and sand, cement, the water of gap grading or single grating, every cubic meter of concrete is by weight ratio---cement: rubble: sand: water=150～450kg: 1200～2200kg: 0～500kg: 60～180kg forms the cement concrete that is rich in hole.
The present invention after polymer composition is sprayed onto the surface of honeycombed cement concrete pavement, can flow into the inside of honeycombed cement concrete pavement along the space under action of gravity.
Construction method step of the present invention is as follows: on the surface of the cement concrete bottom of clearing up, adopt machinery or artificial method by weight polymer and uniform filling to be mixed and stirred, form the mixture of polymer and filler, the compound that polymer or polymer and filler are formed then, sprinkling or brushing are on the cement concrete bottom, form tack coat, before material in tack coat does not solidify fully, according to rubble and the sand of weight proportion with gap grading or single grating, cement, hydromining stirs with mechanical or manually even, form the honeycombed cement concrete, adopt the spreading machine or the honeycombed cement concrete that manually paves, utilize spreading machine or manually realize the concrete leveling of honeycombed cement, compacting, maintenance 1-7 days, adopt then machinery or artificial method with polymer and filler by weight adopting mechanical or manually evenly mixing and stirring, the compound of polymer and filler formation is sprayed at the concrete surface of honeycombed cement with machinery, make the polymer composition of inflow rely on gravity to flow into the concrete inside of honeycombed cement along hole, hole in the filling porous cement concrete, thereby form inflow formula polymer cement concrete surface layer, the polymer composition that flows into formula polymer cement concrete surface layer flows into operation and finishes back maintenance 1-7 days.
The inflow formula polymer cement concrete that the present invention adopts has very big difference with existing polymer modified cement-concrete, is embodied in:
(1) inflow formula polymer cement concrete of the present invention is compared with existing polymer modified cement-concrete, its material structure difference, corresponding therewith, mixing proportion design theory is also different: the inflow formula polymer cement concrete of the present patent application is that the hole that utilizes polymer composition to flow in the porous concrete constitutes, therefore, when components such as polymer content, cement factor were identical, both physical and chemical performances, mechanical property had bigger difference; Adapt therewith, in match ratio when design,, the problem that the present invention considers also has bigger difference with traditional polymer cement concrete.
(2) construction technology is obviously different.The construction sequence of the inflow formula polymer cement concrete surface layer of the present patent application is that oneself shakeouts, constructs from jolt ramming technology and be rich in the honeycombed cement concrete of hole at first to adopt paver, need not to adopt road roller to roll after paving; Adopt the hole in the filling porous cement concrete of method that flows into then, form inflow formula polymer cement concrete surface layer at last, therefore construction technology of the present invention is simple and convenient, realizes easily, is convenient to promote.
And existing polymer modified cement-concrete adopts the Vibration Technology construction often in construction; When adopting brushing technique, the thickness of once constructing is little, is difficult to adapt to the extensive construction of pavement of road.
To sum up, the present invention is a kind of new novel road surface structure that is different from existing various road structures.The road surface had both had cement concrete high strength, had the high flexibility of polymer concrete again, had both had the stability of inorganic material, had the cementitiousness of organic material again, and the road surface has the advantage of rigid pavement and flexible pavement simultaneously and respectively goes it short.
The present invention can guarantee that good road with the thickness that significantly reduces top course under the prerequisite, brings remarkable economical; Inflow formula polymer cement concrete pavement face is drawn materials conveniently, and construction is simple, quick.
Four, description of drawings
Further specify the present invention in conjunction with the accompanying drawings.
Accompanying drawing is a section structure schematic diagram of the present invention.
---flow into formula polymer cement concrete surface layer 2---tack coat 3---cement concrete bottom among the figure: 1
Five, the specific embodiment
Below an embodiment:
Its structure is, cement concrete bottom 3, tack coat 2, flows into formula polymer cement concrete surface layer 1, and the cement concrete bottom has tack coat 2 on 3 surfaces, and inflow formula polymer cement concrete surface layer 1 is arranged on tack coat 2.
At first clean the Portland Cement Concrete Surface Course 3 that forms in advance, the polymer water mud of cementation has been brushed in artificial thereon then shop, form tack coat 2, the weight proportion of tack coat 2 is---polymer (SBR emulsion): filler (Portland cement PO 42.5): water: auxiliary agent (silicon oil foam killer)=1: 3: 1: 0.01, add entry dilution bonding layer material, be beneficial to construction; After 1 hour, has certain dry consistency with the cement concrete mixer preparation, be suitable for asphalt paver from leveling, honeycombed cement concrete from jolt ramming technology, its weight proportion is---Portland cement PO 42.5: rubble (join by single-stage, particle diameter 5-10mm): sand: water=300: 1650: 50: 120, the compound that stirs is transported to the job site with dump truck, pave with asphalt paver, adopt the leveling certainly of paver, realize the concrete leveling of honeycombed cement from jolt ramming technology, compacting, the honeycombed cement layer of concrete 1 of hole is rich in formation, steamroller does not vibrate yet; Film covers health 3 days, spray polymer composition on the surface of honeycombed cement layer of concrete with machinery then, polymer composition has certain fluidity, can rely on gravity flow, flow in the honeycombed cement pore fluid of concrete and go, used polymer composition, its weight proportion is---polymer (benzene emulsion): filler (Portland cement PO 42.5+ sand): water (thinner): (wherein: cement is 3 to auxiliary agent (silicon oil foam killer)=1: 3.1, sand is 0.1): 4.5: 0.01, after the polymer composition of inflow formula polymer cement concrete surface layer 1 flows into the operation end, adopt the plastic sheeting covering curing, 7 days curing times.
Claims (10)
1, the inflow formula polymer cement concrete pavement face structure on a kind of cement concrete, include cement concrete bottom (3), it is characterized in that: cement concrete bottom (3) has tack coat (2) on the surface, and inflow formula polymer cement concrete surface layer (1) is arranged on tack coat (2).
2, the inflow formula polymer cement concrete pavement face structure on the cement concrete according to claim 1 is characterized in that: cement concrete bottom (3) is the cement concrete that forms in advance or rolls cement concrete pavement, square, sidewalk.
3, the inflow formula polymer cement concrete pavement face structure on the cement concrete according to claim 1, it is characterized in that: tack coat (2) is to be by weight ratio by polymer or polymer and filler---polymer: the waterproof thin layer that filler=1: 0～15 form, can with cement concrete bottom (3) under it and inflow formula polymer cement concrete surface layer (1) bonds well on it.
4, the inflow formula polymer cement concrete pavement face structure on the cement concrete according to claim 1 is characterized in that: flowing into formula polymer cement concrete surface layer (1) by flowing into polymer or polymer and filler in the honeycombed cement concrete is by weight ratio---polymer: the mixture that filler=1: 0～5 are formed forms.
5, according to the inflow formula polymer cement concrete pavement face structure on claim 3, the 4 described cement concretes, it is characterized in that: tack coat (2) polymer used with flowing into formula polymer cement concrete surface layer (1) is fluoropolymer resin, polymer powder or polymer emulsion.
6, according to the inflow formula polymer cement concrete pavement face structure on claim 3, the 4 described cement concretes, it is characterized in that: the polymer that tack coat (2) is used with flowing into formula polymer cement concrete surface layer (1) or the mixture of polymer and filler can add corresponding thinner or water dilutes, also can add corresponding adjuvants, the weight proportion of polymer and thinner or water, auxiliary agent is---polymer: thinner or water: auxiliary agent=1: 0～10: 0～2.
7, according to the inflow formula polymer cement concrete pavement face structure on claim 3, the 4 described cement concretes, it is characterized in that: filler is active filler, as cement, flyash etc., it perhaps is inert filler, as calcium carbonate, French chalk, fine sand etc., perhaps be the mixture that different fillers is formed.
8, the inflow formula polymer cement concrete pavement face structure on the cement concrete according to claim 4, it is characterized in that: the honeycombed cement concrete that flows in the formula polymer cement concrete surface layer (1) is made up of rubble and sand, cement, the water of gap grading or single grating, every cubic meter of concrete is by weight ratio---cement: rubble: sand: water=150～450kg: 1200～2200kg: 0～500kg: 60～180kg forms the cement concrete that is rich in hole.
9, the inflow formula polymer cement concrete pavement face structure on the cement concrete according to claim 4, it is characterized in that: after polymer composition is sprayed onto the surface of honeycombed cement concrete pavement (1), can under action of gravity, flow into the inside of honeycombed cement concrete pavement (1) along the space.
10, inflow formula polymer cement concrete pavement face construction method on a kind of cement concrete, it is characterized in that step is as follows: on the surface of the cement concrete bottom of clearing up (3), adopt machinery or artificial method by weight polymer and uniform filling to be mixed and stirred, form the mixture of polymer and filler, the compound that polymer or polymer and filler are formed then, spraying or brushing are on cement concrete bottom (3), form tack coat (2), before material in tack coat (2) does not solidify fully, according to rubble and the sand of weight proportion with gap grading or single grating, cement, hydromining stirs with mechanical or manually even, form the honeycombed cement concrete, adopt the spreading machine or the honeycombed cement concrete that manually paves, utilize spreading machine or manually realize the concrete leveling of honeycombed cement, compacting, maintenance 1-7 days, adopt then machinery or artificial method with polymer and filler by weight adopting mechanical or manually evenly mixing and stirring, the compound of polymer and filler formation is sprayed at the concrete surface of honeycombed cement with machinery, make the polymer composition of inflow rely on gravity to flow into the concrete inside of honeycombed cement along hole, hole in the filling porous cement concrete, thereby form inflow formula polymer cement concrete surface layer (1), the polymer composition that flows into formula polymer cement concrete surface layer (1) flows into operation and finishes back maintenance 1-7 days.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100782210A CN101016718B (en) | 2007-02-14 | 2007-02-14 | Influent polymer cement concrete pavement structure on cement concrete and construction method therefor |
| PCT/CN2008/000271 WO2008101395A1 (en) | 2007-02-14 | 2008-02-02 | A concrete pavement and the construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100782210A CN101016718B (en) | 2007-02-14 | 2007-02-14 | Influent polymer cement concrete pavement structure on cement concrete and construction method therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101016718A true CN101016718A (en) | 2007-08-15 |
| CN101016718B CN101016718B (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100782210A Expired - Fee Related CN101016718B (en) | 2007-02-14 | 2007-02-14 | Influent polymer cement concrete pavement structure on cement concrete and construction method therefor |
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| Country | Link |
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| CN (1) | CN101016718B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008098475A1 (en) * | 2007-02-14 | 2008-08-21 | Zhijian Yi | Porous cement concrete pavement and method for construction thereof |
| CN102643058A (en) * | 2012-04-19 | 2012-08-22 | 招商局重庆交通科研设计院有限公司 | New/old cement concrete interfacial binding agent and construction method for interfacial binding by using same |
-
2007
- 2007-02-14 CN CN2007100782210A patent/CN101016718B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008098475A1 (en) * | 2007-02-14 | 2008-08-21 | Zhijian Yi | Porous cement concrete pavement and method for construction thereof |
| CN102643058A (en) * | 2012-04-19 | 2012-08-22 | 招商局重庆交通科研设计院有限公司 | New/old cement concrete interfacial binding agent and construction method for interfacial binding by using same |
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| Publication number | Publication date |
|---|---|
| CN101016718B (en) | 2012-03-14 |
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