CN103866666A - Method for pouring novel water-seepage concrete members - Google Patents
Method for pouring novel water-seepage concrete members Download PDFInfo
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- CN103866666A CN103866666A CN201210554646.5A CN201210554646A CN103866666A CN 103866666 A CN103866666 A CN 103866666A CN 201210554646 A CN201210554646 A CN 201210554646A CN 103866666 A CN103866666 A CN 103866666A
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Abstract
The invention discloses a method for pouring novel water-seepage concrete members which are applicable to expressways, fast roads, roads, side pavements, public plazas and the like. The method for pouring novel water-seepage concrete members is carried out by reducing the used cement consumption and keeping enough strength, reducing a surface porosity, increasing number of tiny inner holes, improving fineness and strength of particles on the surface, adopting best sizes of coarse and fine aggregates and reducing the corresponding amount of the number of particles in per unit volume; meanwhile, the water-seepage concrete members are rich in sources of raw materials and low in cost. Rainwater and surface water flow under the ground through seepage layers of the water-seepage concrete members, thereby protecting natural environment, protecting underground water, preventing slipping, preventing diffuse reflection caused by humidity of pavements and preventing urban water channels from overflowing.
Description
Technical field
The present invention can be used for speedway, through street, road, sidewalk, the rigid pavement of public square etc. and other buildings that need to seep water.
Background technology
In recent years, climate variability in all parts of the country, heavy rain is continuous sometimes, and urban sewerage and drainage system has little time draining, causes a large amount of ponding of urban pavement, Cheng Liao ocean, city proper.For head it off, we have developed a kind of novel creepage concrete member, have solved the ponding difficult problem on general concrete road surface.Rainwater and surface water are by under the permeable formation inflow surface of creepage concrete member.The advantage of this creepage concrete member is can conservation of nature environment, and protection underground water, prevents from skidding, and prevents the moisture-induced diffuse reflection due to road surface, prevents that city water channel from overflowing.
Summary of the invention
Technical problem to be solved by this invention is: a kind of for speedway, and through street, road, sidewalk, the casting method of the water seepage concrete component of public square etc.
The present invention solves the problems of the technologies described above adopted technical scheme: the cement consumption using by minimizing keeps enough intensity simultaneously, by reducing surface porosity factor, increase the quantity of small internal holes, increase fineness and the intensity of surface particles, adopt the optimum size of coarse-fine aggregate and reduce the respective amount of amounts of particles in unit volume and realize, and the raw material of creepage concrete member source is abundant, low price.
The invention has the beneficial effects as follows, rainwater and surface water be by under the permeable formation inflow surface of creepage concrete member, can conservation of nature environment, and protection underground water, prevents from skidding, and prevents the moisture-induced diffuse reflection due to road surface, prevents that city water channel from overflowing.
Brief description of the drawings
Fig. 1 creepage concrete member cross-sectional view;
Fig. 2 creepage concrete member construction flow chart;
Fig. 3 maximum particle diameter is the aggregate screening schematic diagram for basal layer creepage concrete of 40mm;
Fig. 4 maximum particle diameter is the aggregate screening schematic diagram of the creepage concrete for surface course of 20mm;
The cross sectional representation that Fig. 5 Common Concrete Pavement and creepage concrete member are compared.
Detailed description of the invention
The transmission coefficient that paves on the roadbed of compacting is greater than 10 × 10
-4layer of sand and the transmission coefficient of cm/s are greater than 10 × 10
-2the macadam of cm/s; Then build the basal layer of creepage concrete member in the above, the basal layer of creepage concrete member adopts concrete, and cement mixing content is 300～500kg/m
3, water/binder ratio is 0.25～0.35; Last surface course of building creepage concrete member on basal layer, the surface course of creepage concrete member adopts modified concrete, and cement mixing content is 300～500kg/m
3, water/binder ratio is 0.25～0.35, mixes polymer to control intensity and durability, this polymer can adopt emulsion acrylic resin, mulseal, styrene butadiene rubber latex etc.The consumption of the polymer using is in 20% scope of cement weight, for economy can preferably be used mulseal; Use about 1.4kg/m
3the amplified medium such as polypropylene fibre, polyethylene fibre, carbon fiber or iron fiber in order to the flexural strength of enhanced surface layers.If consider to carry the needed time, adopt cement retarder.After finishing, the surface course concreting of creepage concrete member adopt covered with plastic film to carry out maintenance, curing time at least 48 hours, then brush a kind of solution in the above, this solution is that a kind of polymer and the water in emulsion type acrylic acid tree vinegar, epoxy resin, urine institute, mulseal and latex mixes.
The basal layer concrete of creepage concrete member, the maximum particle diameter of its coarse aggregate is 40mm, with the particle percent of pass of 50mm sieve be 100%, with the particle percent of pass of 40mm sieve be 95～100%, with the particle percent of pass of 25mm sieve be 75～95%, with the particle percent of pass of 10mm sieve be 15～55%, with the particle percent of pass sieving for No. 4 be 0～20%, with No. 10 sieve particle percent of pass be 0～10%, with No. 40 sieve particle percent of pass be 0～5%.
The surface course concrete of creepage concrete member, the maximum particle diameter of its coarse aggregate is 20mm, with the particle percent of pass of 25mm sieve be 100%, with the particle percent of pass of 19mm sieve be 95～100%, with the particle percent of pass of 10mm sieve be 20～60%, with No. 4 sieve particle percent of pass be 0～20%, with No. 10 sieve particle percent of pass be 0～10%, with No. 40 sieve particle percent of pass be 0～5%.
The consumption of cement and water/binder ratio be after compacting, reach porosity be 8～18% and transmission coefficient be greater than 10 × 10
-2cm/s determines.The consumption of coarse-fine aggregate formula below cement consumption and the definite rear basis of water/binder ratio calculates:
The consumption of coarse-fine aggregate={ weight+(the using the proportion of the consumption/cement of cement) of 850-[water] } × the use proportion of coarse-fine aggregate
Here 850 is volumes of removing 15% hole for 1 cubic metre of volume of creepage concrete of pavement of road.
In order to increase the flexural strength of surface course, adopt the one in polypropylene fibre, polyethylene fibre, carbon fiber or iron fiber etc., the consumption of this additive is 1.4kg/m
3.
Yellow ground permeable formation can prevent that soil from mixing with top basal layer, can also purify waste water.In order to spread top load and store the water of fixed amount within a period of time.The rubble basal layer that paves on yellow ground permeable layer, the transmission coefficient of this rubble basal layer is greater than 10 × 10
-2cm/s, and should reach maximum density after paving.Its compressive strength of creepage concrete for pavement of road should be greater than 26MPa, and flexural strength should be greater than 4MPa.
Creepage concrete basal layer and surface course cement factor can be adjusted, and scope is 300～500kg/m
3.Consider the quality of coarse-fine aggregate, design strength, after the factors such as transmission coefficient, water/binder ratio is defined as 0.25～0.35, and porosity is 8～18%, and seepage rate coefficient is 10 × 10
-2cm/s.
Creepage concrete is transported to scene by dump truck, paved, and by series tubular type road roller, rubber tyred roller etc. rolls by bituminous concrete paver.Seepage material concrete fully compacting makes its density exceed the regulation density for the test specimen of strength test.The standard of compacting is according to the coarse-fine aggregate using, on-the-spot condition, and the decisions such as the weight of the equipment of use therefore, could be determined before laying.For the thick rigid pavement of 15cm, 8 tons of tandem rollers need roll for 8～12 times or 12 tons of rubber tyred rollers to need roll for 4 times be suitable.
In order to improve the bond strength of creepage concrete of pavement of road, use emulsion type polymer, for example epoxy resin, acrylic resin, pitch, latex etc.This polymer should have weatherproof strong durability.The consumption of polymer is 10～40% of cement weight.Consider transport, pave, the consumption of the cement retarder that the factor such as time of compacting is used should be less than use cement weight 2%.
Surface course concrete is carried out lid by vinyl or thermal covering, and sclerosis exceedes one day, and paves for adsorption by polymer after overburden is removed.The aperture of creepage concrete has filled up polymer, and concrete intensity is owing to filling up polymer and be reinforced in hole, thereby can prevent from getting involved and making strength decreased and produce to corrode due to moisture.Polymer for adsorption effect can be emulsion type acrylic resin, epoxy resin, urine institute, mulseal, the one in the materials such as latex.Admix strong durability and the simple emulsion type acrylic resin of usage and the water with waterproof, and the ratio of resin and water is 1: 5 to 1: 10, then mixture paved and exceed secondary so that absorption enters in creepage concrete fully.
After paving, on creepage concrete piece table surface layer, cut transverse contraction joint with concrete cutting machine every 4～8m spacing, every 20～100m, a settlement joint is set, longitudinally contracts and stitch with concrete cutting machine cutting on creepage concrete piece table surface layer every 2～5m spacing.
The concrete of creepage concrete member must do the detection of compressive strength, flexural strength, porosity, density, compactness, transmission coefficient.
The porosity of creepage concrete is to calculate according to the wet theoretical unit volume weight of absolute closely knit bulk density of creepage concrete and the ratio of the effective unit volume weight of creepage concrete, the unit volume in the preparation method of the test specimen of unit volume mensuration employing compressive strength determination.Absolute closely knit bulk density refers to the weight of each cubic meter of concrete in the time that compacting does not exist cavity and air, and its unit is kg/m
3.
Therefore, porosity can be calculated according to following formula:
Porosity=100-(bulk density/absolute closely knit bulk density of creepage concrete) × 100
The compactness of creepage concrete, according to on-the-spot coring test, records the density of on-the-spot creepage concrete, calculates by following formula:
Compactness=(density of concrete density/test specimen that core obtains is got at scene) × 100
The density of creepage concrete is calculated with paraffin, because paraffin has a large amount of pores.
Density=A/{D-E-[(D-A)/F]
Wherein A is the weight of test specimen in atmosphere, and D is the weight of the test specimen that is covered with in atmosphere, and E is the weight of the test specimen that is covered with in water, and F is the proportion of paraffin.
Transmission coefficient adopts tester to adopt at the scene water test method to measure, and calculates according to following formula:
K
P＝(L×a)/[A(t
2-t
1)]log
e(h
1/h
2)
Here L is ground surface material height, and a is the cross sectional area of container, and A is infiltration cross sectional area, t
2and t
1the duration of infiltration, h
1horizontal plane while being test beginning, and h
2that test finishes rear horizontal plane.
Fig. 5 represents the cross sectional representation that Common Concrete Pavement and creepage concrete member are compared.In this drawing, arrow represents the flow direction of water.Common Concrete Pavement comprises the foundation of compacting, bed course and basal layer, and the gutter of bituminous concrete or cement concrete pavement surface and a side, by this gutter, rainwater flows out to river course, in Wastewater Treatment Plant or river.Creepage concrete member comprises the foundation of compacting, yellow ground permeable layer, and rubble permeable layer, as the creepage concrete layer of basal layer with as the creepage concrete thin layer of surface course.If water infiltration water coagulation soil layer, water will pass creepage concrete surface course, then flows into creepage concrete layer, the rubble basal layer of infiltration and the yellow ground layer of infiltration as basal layer, finally flows to earth roadbedly, and small part water can be evaporated in air.
Claims (5)
1. water seepage concrete component casting method, it is characterized in that: the cement consumption using by minimizing keeps enough intensity simultaneously, by reducing surface porosity factor, increase the quantity of small internal holes, increase fineness and the intensity of surface particles, adopt the optimum size of coarse-fine aggregate and reduce the respective amount of amounts of particles in unit volume and realize.
2. water seepage concrete component casting method according to claim 1, is characterized in that: the transmission coefficient that paves on the roadbed of compacting is greater than 10 × 10
-4layer of sand and the transmission coefficient of cm/s are greater than 10 × 10
-2the macadam of cm/s; Then build the basal layer of creepage concrete member in the above, the basal layer of creepage concrete member adopts concrete; Last surface course of building creepage concrete member on basal layer, the surface course of creepage concrete member adopts concrete.
3. water seepage concrete component casting method according to claim 1, it is characterized in that: the basal layer concrete of creepage concrete member, the maximum particle diameter of its coarse aggregate is 40mm, with the particle percent of pass of 50mm sieve be 100%, with the particle percent of pass of 40mm sieve be 95～100%, with the particle percent of pass of 25mm sieve be 75～95%, with the particle percent of pass of 10mm sieve be 15～55%, with No. 4 sieve particle percent of pass be 0～20%, with No. 10 sieve particle percent of pass be 0～10%, with No. 40 sieve particle percent of pass be 0～5%.
4. water seepage concrete component casting method according to claim 1, it is characterized in that: the surface course concrete of creepage concrete member, the maximum particle diameter of its coarse aggregate is 20mm, with the particle percent of pass of 25mm sieve be 100%, with the particle percent of pass of 19mm sieve be 95～100%, with the particle percent of pass of 10mm sieve be 20～60%, with the particle percent of pass sieving for No. 4 be 0～20%, with No. 10 sieve particle percent of pass be 0～10%, with No. 40 sieve particle percent of pass be 0～5%.
5. water seepage concrete component casting method according to claim 1, is characterized in that: in order to increase the flexural strength of surface course, adopt the one in polypropylene fibre, polyethylene fibre, carbon fiber or iron fiber etc., the consumption of this additive is 1.4kg/m
3.
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| CN201210554646.5A CN103866666A (en) | 2012-12-07 | 2012-12-07 | Method for pouring novel water-seepage concrete members |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113603418A (en) * | 2021-08-09 | 2021-11-05 | 中国十七冶集团有限公司 | Polymerized concrete overlay and construction method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1138121A (en) * | 1995-05-01 | 1996-12-18 | 黄益铉 | Paving method of water-permeable concrete |
| JP2012193079A (en) * | 2011-03-17 | 2012-10-11 | Taiheiyo Cement Corp | High strength porous concrete composition and high strength porous concrete cured body |
| CN202787016U (en) * | 2012-03-06 | 2013-03-13 | 宏润建设集团股份有限公司 | Novel water seepage concrete member |
-
2012
- 2012-12-07 CN CN201210554646.5A patent/CN103866666A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1138121A (en) * | 1995-05-01 | 1996-12-18 | 黄益铉 | Paving method of water-permeable concrete |
| JP2012193079A (en) * | 2011-03-17 | 2012-10-11 | Taiheiyo Cement Corp | High strength porous concrete composition and high strength porous concrete cured body |
| CN202787016U (en) * | 2012-03-06 | 2013-03-13 | 宏润建设集团股份有限公司 | Novel water seepage concrete member |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113603418A (en) * | 2021-08-09 | 2021-11-05 | 中国十七冶集团有限公司 | Polymerized concrete overlay and construction method thereof |
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Application publication date: 20140618 |