CN105565723A - Pervious concrete formula and construction method - Google Patents
Pervious concrete formula and construction method Download PDFInfo
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- CN105565723A CN105565723A CN201610054577.XA CN201610054577A CN105565723A CN 105565723 A CN105565723 A CN 105565723A CN 201610054577 A CN201610054577 A CN 201610054577A CN 105565723 A CN105565723 A CN 105565723A
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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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- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/0076—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials characterised by the grain distribution
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to the technical field of concrete and particularly relates to a pervious concrete formula and a construction method. According to the formula, the pervious concrete is composed of, by weight, 260-440 parts of cement, 90-150 parts of second-class coal ash, 90-160 parts of slag powder, 1500-1650 parts of broken stone, water, a binding material, a lime concrete reinforcing agent, polycarboxylate superplasticizer, inorganic mineral oxide pigments and an oleoresin top facing agent, wherein the mixing ratio of water to lime is 0.25-0.40, and the mixing ratio of water to the binding material is 0.25-0.40. The binding material is a mixture of cement, second-class coal ash and slag powder with the mixing ratio of 3:1.5:1. The oleoresin top facing agent is acrylic resin.
Description
Technical field
The invention belongs to technical field of concrete, particularly relate to pervious concrete formula and constructional method.
Background technology
Permeable concrete ground surface material belongs to environment-friendly type, Ecotype Concrete material, has water-permeable and ventilation property, and its essentially consist material and common concrete material do not have the difference of essence.Difference is that normal concrete always reduces porosity by every means, to make it closely knit, reach the object of high strength and high-durability, and permeable concrete is by adopting special material prescription, while meeting Pavement Condition requirement, its structural porous can be realized and continuous print feature, make it have good water-permeable.When concentrated rainfall, rainwater can be permeated the ground in time by open pore, reaches the object of rapid draining and recharge of groundwater resource, is equipped with corresponding rainwater-collecting facility, can also saving water resource.
American-European wait developed country substantially to begin one's study before 30 years to develop pervious surface material, and be applied to road and parking lot etc. in square, shopping mall, road both sides and central partition, park.
For test is without the draining characteristics of fine aggregate pervious concrete, way that Britain's engineers in 1970 once adopted flood to pave, the composite pavement test section of one segment length 183m at Nottinghamshire making.Initial test section serviceability is good, but after 10 years, test section is considered to failure, some factor is (as freeze-thaw cycle and waterpower suction, or the combination of both) be the possible cause causing pavement destruction, section is positioned at rural area in addition, and the hole of no fines concrete is blocked by grogs, surface gathered water, finally causes surperficial loose peeling off.
It is the no-fines and porous concrete of 26.2MPa that the U.S. in 1979 develops 28 days ultimate compression strength, and its coefficient of permeability is 1.6mm/s.This pervious concrete have employed I type portland cement, not containing fine aggregate, employing particle diameter is the simple grain level coarse aggregate of 6 ~ 12.5mm, aggregate-cement ratio is 3:1, be mixed with air entrapment agent and a kind of water-based epoxy acrylic emulsion simultaneously, to improve concrete intensity and frost resistance, no-fines and porous concrete has good water-permeable, can meet requirement of strength again simultaneously.From the eighties in 20th century, there is special pervious concrete stirring station in the U.S., carries out commercial offers to concrete.
Within 1987, the U.S. all employ pervious concrete in the area that rainfall amount is few, and main making place is parking lot, light track and city's Central Street.These pervious concrete porositys are 15% ~ 25%, and ultimate compression strength is 14.0 ~ 17.5MPa.Pervious concrete is placed into outdoor and carries out freezing and thawing test by ready mixed concrete association of U.S. laboratory, contrasts with the test specimen of indoor five freeze thawing every day.Result shows, indoor test specimen is damaged, and outdoor pervious concrete stands intact.
France widespread use pervious concrete carry out side drainage and road surface permeable.The research of Missoux and Merrien shows, porosity be 28 days ultimate compression strength of the pervious concrete of 15% ~ 30% generally lower than 14MPa, rate of permeation is respectively every square metre of 2.1m per second
3and 2.9m
3.In addition, the ground, tennis court of France 60% all have employed pervious concrete and mats formation.In addition, pervious concrete is also used in slope protection greening band aspect, serves good provide protection to the ecotope of two sides, river course.
20 century 70 later stages, Japan causes the problems such as setting of ground for solving because of groundwater abstraction, propose " the underground also Original Policy of rainwater ", start to develop pervious concrete and mat formation, and have studied the coefficient of permeability of pervious concrete pavement material and the relation of hole and intensity.Within 1987, Japanese researchers has applied for pervious concrete pavement material patent, and they prepare pervious concrete at admixture macromolecule resin and fine aggregate in consolidating material.
Since entering the nineties in 20th century, Japan is more deep to the research of pervious concrete, not only have studied the principle of preparation, physical and mechanical property, preparation technology and test method have also been made the research work that a lot of chromium arrives.The occupied state theoretical model such as proposed, concrete technology of preparing, the prostatitis using the method for the image procossing Calculation Plane porosity of camera method coupled computer, ultimate compression strength and folding strength and water-cement ratio, the relation of mobility, the international this area of constitutive relation model Deng Douju to study, particularly analytic method is also applied to the research of pervious concrete, theoretical investigation is arrived new height.
Japan is all respects being applied to improve the ecological environment to another feature of pervious concrete investigation and application, except paving, be applied to the purification etc. of the bank protection of the embankment in river, water channel and road, river, halobiontic habitat and water quality, be therefore called as environmental friendliness concrete.
Japan is not only on the forefront in pervious concrete research, also current world lead level is reached in utilisation technology exploitation and complete set, the pervious concrete of the laying no matter on pervious concrete carrying road surface and road, bank protection all achieves efficient, the full mechanical execution of suitability for industrialized production and big machinery on mating formation.
In the traditional culture of China, the Ecological Concept of the harmony between man and nature, harmony between man and nature occupies very consequence, and this is obtained for embodiment in the construction in building since ancient times and gardens.In recent years, under the guidance of the Scientific Outlook on Development of Party Central Committee's proposition, the theory of harmony between man and nature has become the common recognition of the whole society, pervious concrete obtains unprecedented attention, more domestic universities, enterprise and scientific research institutions have carried out the research work of pervious concrete, and its research contents comprises mix proportion, concrete preparation and concrete performance and goods etc.
The domestic development to pervious concrete, such as: Chang An University etc. have carried out a series of experimental study to the physical mechanics of pervious concrete and pavement performance, have than more rich achievement.Middle building materials Engineering Research Center is to the technology of the preparation principle of pervious concrete, the performance of pervious concrete, detection method and operating technique all conduct in-depth research, there is multinomial patent of invention, the pervious concrete 28 days ultimate compression strength of preparation reaches 44.8MPa, folding strength reaches 8.4MPa, and freeze-thaw-circulation reaches D200.
Engineer applied aspect, existing numerous engineering have employed pervious concrete pavement, such as, undisguisedly expects, in pervious concrete pavement case history, have Beijing Olympic engineering than fairly large employing, adopts and always mats formation area more than 100,000 m
2undisguised material pervious concrete pavement, also uses more than 100,000 m at Shanghai World's Fair construction project
2undisguised material pervious concrete, the park of Xi'an Daming Palace engineering and view Study on principle of square design have more than 30 ten thousand m
2undisguised material pervious concrete pavement, the design of Xi'an world flower expo landscape engineering is more than 200,000 m
2porous pavement etc., the application of middle and small scale is innumerable especially.
As a whole, and abroad to compare, the pervious concrete research and apply development of China is still uneven, is mainly manifested in the following aspects:
1, deep not enough to the composition Study of pervious concrete, also systematicness is lacked to the research of physical and mechanical property and weather resistance and constitutive relation.
2, suitability for industrialized production and big machineryization construction gap compared with is abroad comparatively large, and at present still based on artificial and small-sized machine, concrete is still based in situ preparation, also unrealized suitability for industrialized production.
3, more single to concrete constructional method, identical with the constructional method of normal concrete without any difference.
Summary of the invention
The problem to be solved in the present invention is that the existing pervious concrete comparison of ingredients of China is simple, and result of use is not good, more single to concrete constructional method, identical with the constructional method of normal concrete without any difference.
In order to solve the problems of the technologies described above, the invention provides following scheme: pervious concrete formula, be made up of the component of following weight raw material: cement 260 ~ 440, second class powered coal ash 90 ~ 150, slag powders 90 ~ 160, rubble 1500 ~ 1650, water, gelling material, lime concrete toughener, polycarboxylate water-reducer, inorganic mineral oxide pigment and the agent of oleoresin cover, wherein the blending ratio of water and lime is 0.25 ~ 0.40, and wherein the blending ratio of water and gelling material is 0.25 ~ 0.40.
Further, described gelling material is the mixture of cement, second class powered coal ash and slag powders, and its blending ratio is 3:1.5:1.
Further, it is preferably described cement 300, second class powered coal ash 120, slag powders 100, rubble 1600, water, gelling material, lime concrete toughener, polycarboxylate water-reducer, inorganic mineral oxide pigment and the agent of oleoresin cover, wherein the blending ratio of water and lime is 0.3, and wherein the blending ratio of water and gelling material is 0.3.
Further, the agent of described oleoresin cover is acrylic resin.
Further, the constructional method of pervious concrete, comprise the following steps: the first step, mixing, first cement, second class powered coal ash 120, slag powders 100 are stirred 30s, then add concrete intensifier and inorganic mineral oxide pigment stirring 60s, finally add water and polycarboxylate water-reducer stirring 120s discharging; Second step, builds, and first clears up roadbed, and unfairness place should equating in addition.Under all satisfactory prerequisite of base width, surface finish and compactness, build front roadbed and must first sprinkle water wetting, then build; 3rd step, paves, and after pervious concrete mixture transports to scene, paves in time; 4th step, maintenance, in time with its surface of covered rearing with plastic film after shaping the completing that pave, maintenance of sprinkling water after a day.At least maintenance 2 times every day; 5th step, expansion joint is cut, and concrete pouring carried out seam and joint-cutting after 3 days, should rinse immediately after joint-cutting; 6th step, oleoresin cover, adds oiliness vinylformic acid cover.
Further, polyurethanes and chloroprene rubber class material is selected during seam in described 5th step.
Advantageous Effects of the present invention is: the grating principle utilizing rubble, adjusts the hole of its pervious concrete, reduces glue and when adds the intensity that toughener increases pervious concrete, can meet so again intensity and water-permeable requirement with polycarboxylate water-reducer.Utilize above-mentioned constructional method to make road surface closely knit, firmly, surfacing, improves speed of application, effectively ensures construction quality aggregate bonding.
Permeable concrete ground regional environment brings good ecologic effect, and it is one of important foundation keeping ecological property circulation.Purely polluting with the engineering control manually built, is not best mode, drops into a huge sum of money, is not only control yet and pollutes for the moment, only follow natural law, utilize the natural law, just can obtain good ecological benefits and economic benefit.Certain pervious surface is kept in construction area, to raising district environment capacity, keep good ecotope important role, therefore, be necessary to pay close attention to the effect of ground permeability rate in urban ecological environment more, in this, as one of urban ecology index and urban construction Con trolling index, to structure harmony between man and nature society important in inhibiting.
Utilize pervious concrete to replace normal concrete, bring good ecologic effect with permeable concrete ground to environment, it is one of important foundation keeping benign ecological cycles.Purely polluting with the engineering control manually built, is not best mode, drops into a huge sum of money, is only control to pollute for the moment yet, only follows natural law, utilize the natural law, just can obtain good ecological benefits and economic benefit.Certain pervious surface is kept in construction area, to raising district environment capacity, keep good ecotope important role, therefore, be necessary to pay close attention to the effect of ground permeability rate in urban ecological environment more, in this, as one of urban ecology index and urban construction Con trolling index, to structure harmony between man and nature society important in inhibiting.
Embodiment
Embodiment 1
Pervious concrete formula and constructional method, be made up of the component of following weight raw material: cement 260 ~ 440, second class powered coal ash 90 ~ 150, slag powders 90 ~ 160, rubble 1500 ~ 1650, water, gelling material, lime concrete toughener, polycarboxylate water-reducer, inorganic mineral oxide pigment and the agent of oleoresin cover, wherein the blending ratio of water and lime is 0.25 ~ 0.40, and wherein the blending ratio of water and gelling material is 0.25 ~ 0.40.Described gelling material is the mixture of cement, second class powered coal ash and slag powders, and its blending ratio is 3:1.5:1.The agent of described oleoresin cover is acrylic resin.
The constructional method of pervious concrete, comprise the following steps: the first step, mixing, first cement, second class powered coal ash 120, slag powders 100 are stirred 30s, then add concrete intensifier and inorganic mineral oxide pigment stirring 60s, finally add water and polycarboxylate water-reducer stirring 120s discharging; Second step, builds, and first clears up roadbed, and unfairness place should equating in addition.Under all satisfactory prerequisite of base width, surface finish and compactness, build front roadbed and must first sprinkle water wetting, then build; 3rd step, paves, and after pervious concrete mixture transports to scene, paves in time; 4th step, maintenance, in time with its surface of covered rearing with plastic film after shaping the completing that pave, maintenance of sprinkling water after a day.At least maintenance 2 times every day; 5th step, expansion joint is cut, and concrete pouring carried out seam and joint-cutting after 3 days, should rinse immediately after joint-cutting, selected polyurethanes and chloroprene rubber class material during seam; 6th step, oleoresin cover, adds oiliness vinylformic acid cover.
Advantageous Effects of the present invention is: the grating principle utilizing rubble, adjusts the hole of its pervious concrete, reduces glue and when adds the intensity that toughener increases pervious concrete, can meet so again intensity and water-permeable requirement with polycarboxylate water-reducer.Utilize above-mentioned constructional method to make road surface closely knit, firmly, surfacing, improves speed of application, effectively ensures construction quality aggregate bonding.
Permeable concrete ground regional environment brings good ecologic effect, and it is one of important foundation keeping ecological property circulation.Purely polluting with the engineering control manually built, is not best mode, drops into a huge sum of money, is not only control yet and pollutes for the moment, only follow natural law, utilize the natural law, just can obtain good ecological benefits and economic benefit.Certain pervious surface is kept in construction area, to raising district environment capacity, keep good ecotope important role, therefore, be necessary to pay close attention to the effect of ground permeability rate in urban ecological environment more, in this, as one of urban ecology index and urban construction Con trolling index, to structure harmony between man and nature society important in inhibiting.
Utilize pervious concrete to replace normal concrete, bring good ecologic effect with permeable concrete ground to environment, it is one of important foundation keeping benign ecological cycles.Purely polluting with the engineering control manually built, is not best mode, drops into a huge sum of money, is only control to pollute for the moment yet, only follows natural law, utilize the natural law, just can obtain good ecological benefits and economic benefit.Certain pervious surface is kept in construction area, to raising district environment capacity, keep good ecotope important role, therefore, be necessary to pay close attention to the effect of ground permeability rate in urban ecological environment more, in this, as one of urban ecology index and urban construction Con trolling index, to structure harmony between man and nature society important in inhibiting.
Embodiment 2
Pervious concrete formula and constructional method, be made up of the component of following weight raw material: cement 300, second class powered coal ash 120, slag powders 100, rubble 1600, water, gelling material, lime concrete toughener, polycarboxylate water-reducer, inorganic mineral oxide pigment and the agent of oleoresin cover, wherein the blending ratio of water and lime is 0.3, and wherein the blending ratio of water and gelling material is 0.3.Described gelling material is the mixture of cement, second class powered coal ash and slag powders, and its blending ratio is 3:1.5:1.The agent of described oleoresin cover is acrylic resin.
The constructional method of pervious concrete, comprise the following steps: the first step, mixing, first cement, second class powered coal ash 120, slag powders 100 are stirred 30s, then add concrete intensifier and inorganic mineral oxide pigment stirring 60s, finally add water and polycarboxylate water-reducer stirring 120s discharging; Second step, builds, and first clears up roadbed, and unfairness place should equating in addition.Under all satisfactory prerequisite of base width, surface finish and compactness, build front roadbed and must first sprinkle water wetting, then build; 3rd step, paves, and after pervious concrete mixture transports to scene, paves in time; 4th step, maintenance, in time with its surface of covered rearing with plastic film after shaping the completing that pave, maintenance of sprinkling water after a day.At least maintenance 2 times every day; 5th step, expansion joint is cut, and concrete pouring carried out seam and joint-cutting after 3 days, should rinse immediately after joint-cutting, selected polyurethanes and chloroprene rubber class material during seam; 6th step, oleoresin cover, adds oiliness vinylformic acid cover.
Advantageous Effects of the present invention is: the grating principle utilizing rubble, adjusts the hole of its pervious concrete, reduces glue and when adds the intensity that toughener increases pervious concrete, can meet so again intensity and water-permeable requirement with polycarboxylate water-reducer.Utilize above-mentioned constructional method to make road surface closely knit, firmly, surfacing, improves speed of application, effectively ensures construction quality aggregate bonding.
Permeable concrete ground regional environment brings good ecologic effect, and it is one of important foundation keeping ecological property circulation.Purely polluting with the engineering control manually built, is not best mode, drops into a huge sum of money, is not only control yet and pollutes for the moment, only follow natural law, utilize the natural law, just can obtain good ecological benefits and economic benefit.Certain pervious surface is kept in construction area, to raising district environment capacity, keep good ecotope important role, therefore, be necessary to pay close attention to the effect of ground permeability rate in urban ecological environment more, in this, as one of urban ecology index and urban construction Con trolling index, to structure harmony between man and nature society important in inhibiting.
Utilize pervious concrete to replace normal concrete, bring good ecologic effect with permeable concrete ground to environment, it is one of important foundation keeping benign ecological cycles.Purely polluting with the engineering control manually built, is not best mode, drops into a huge sum of money, is only control to pollute for the moment yet, only follows natural law, utilize the natural law, just can obtain good ecological benefits and economic benefit.Certain pervious surface is kept in construction area, to raising district environment capacity, keep good ecotope important role, therefore, be necessary to pay close attention to the effect of ground permeability rate in urban ecological environment more, in this, as one of urban ecology index and urban construction Con trolling index, to structure harmony between man and nature society important in inhibiting.
Above-described is only the preferred embodiment of the present invention; should be understood that; for a person skilled in the art; under the prerequisite not departing from structure of the present invention; some distortion and improvement can also be made; also should be considered as protection scope of the present invention, these all can not affect effect of the invention process and practical applicability.
Claims (6)
1. pervious concrete formula, it is characterized in that, be made up of the component of following weight raw material: cement 260 ~ 440, second class powered coal ash 90 ~ 150, slag powders 90 ~ 160, rubble 1500 ~ 1650, water, gelling material, lime concrete toughener, polycarboxylate water-reducer, inorganic mineral oxide pigment and the agent of oleoresin cover, wherein the blending ratio of water and lime is 0.25 ~ 0.40, and wherein the blending ratio of water and gelling material is 0.25 ~ 0.40.
2. pervious concrete formula according to claim 1, is characterized in that, described gelling material is the mixture of cement, second class powered coal ash and slag powders, and its blending ratio is 3:1.5:1.
3. pervious concrete formula according to claim 1, it is characterized in that, it is preferably described cement 300, second class powered coal ash 120, slag powders 100, rubble 1600, water, gelling material, lime concrete toughener, polycarboxylate water-reducer, inorganic mineral oxide pigment and the agent of oleoresin cover, wherein the blending ratio of water and lime is 0.3, and wherein the blending ratio of water and gelling material is 0.3.
4. pervious concrete formula according to claim 1, is characterized in that, the agent of described oleoresin cover is acrylic resin.
5. the constructional method of pervious concrete, is characterized in that, comprises the following steps:
The first step, mixing, first stirs 30s by cement, second class powered coal ash 120, slag powders 100, then adds concrete intensifier and inorganic mineral oxide pigment stirring 60s, finally adds water and polycarboxylate water-reducer stirring 120s discharging;
Second step, builds, and first clears up roadbed, and unfairness place should equating in addition.Under all satisfactory prerequisite of base width, surface finish and compactness, build front roadbed and must first sprinkle water wetting, then build;
3rd step, paves, and after pervious concrete mixture transports to scene, paves in time;
4th step, maintenance, in time with its surface of covered rearing with plastic film after shaping the completing that pave, maintenance of sprinkling water after a day.At least maintenance 2 times every day;
5th step, expansion joint is cut, and concrete pouring carried out seam and joint-cutting after 3 days, should rinse immediately after joint-cutting;
6th step, oleoresin cover, adds oiliness vinylformic acid cover.
6. pervious concrete formula according to claim 5, is characterized in that, selects polyurethanes and chloroprene rubber class material in described 5th step during seam.
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Cited By (11)
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| CN106278375A (en) * | 2016-08-17 | 2017-01-04 | 合江县天佳建材有限公司 | A kind of concrete formulation and construction method |
| CN106278364A (en) * | 2016-08-30 | 2017-01-04 | 廊坊荣盛混凝土有限公司 | A kind of permeable concrete and preparation method thereof |
| CN107188475A (en) * | 2017-05-31 | 2017-09-22 | 南通不二环境科技有限公司 | A kind of modified pervious concrete formula |
| CN107986718A (en) * | 2018-01-29 | 2018-05-04 | 云南森博混凝土外加剂有限公司 | A kind of preparation method of pervious concrete |
| CN108191362A (en) * | 2018-01-29 | 2018-06-22 | 云南森博混凝土外加剂有限公司 | A kind of pervious concrete |
| CN108218348A (en) * | 2018-02-02 | 2018-06-29 | 天津城建大学 | A kind of room temperature maintenance alkali-activated carbonatite cementitious material pervious concrete and preparation method thereof |
| CN109320285A (en) * | 2018-10-24 | 2019-02-12 | 华中科技大学 | A kind of white cement pervious concrete that miberal powder is modified |
| CN109761538A (en) * | 2019-01-30 | 2019-05-17 | 浙江广天构件股份有限公司 | A kind of dew aggregate concrete and its construction method |
| CN109991279A (en) * | 2019-05-17 | 2019-07-09 | 宁夏大学 | A kind of Frozen-thawed cycled exposure test device and test method |
| CN110359332A (en) * | 2019-07-26 | 2019-10-22 | 重庆建工住宅建设有限公司 | A kind of construction method of pervious concrete pavement |
| CN114163182A (en) * | 2021-12-10 | 2022-03-11 | 河北省高速公路延崇管理中心 | Elastic cement concrete for basketball court and preparation method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106278375A (en) * | 2016-08-17 | 2017-01-04 | 合江县天佳建材有限公司 | A kind of concrete formulation and construction method |
| CN106278364A (en) * | 2016-08-30 | 2017-01-04 | 廊坊荣盛混凝土有限公司 | A kind of permeable concrete and preparation method thereof |
| CN107188475A (en) * | 2017-05-31 | 2017-09-22 | 南通不二环境科技有限公司 | A kind of modified pervious concrete formula |
| CN107986718A (en) * | 2018-01-29 | 2018-05-04 | 云南森博混凝土外加剂有限公司 | A kind of preparation method of pervious concrete |
| CN108191362A (en) * | 2018-01-29 | 2018-06-22 | 云南森博混凝土外加剂有限公司 | A kind of pervious concrete |
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Application publication date: 20160511 |