CN108147725B - High-strength pervious concrete - Google Patents
High-strength pervious concrete Download PDFInfo
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- CN108147725B CN108147725B CN201711478117.0A CN201711478117A CN108147725B CN 108147725 B CN108147725 B CN 108147725B CN 201711478117 A CN201711478117 A CN 201711478117A CN 108147725 B CN108147725 B CN 108147725B
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/38—Fibrous materials; Whiskers
- C04B14/42—Glass
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
- E01C7/142—Mixtures or their components, e.g. aggregate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Architecture (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Revetment (AREA)
Abstract
The invention provides high-strength pervious concrete, relates to the technical field of concrete, and aims to solve the problem of poor strength of pervious concrete in the prior art, and the high-strength pervious concrete comprises a base material or a fabric, wherein the base material comprises the following components in parts by weight: 80-100 parts of water; 400-450 parts of cement; 1000-2000 parts of 5-25mm crushed stone; 1-3 parts of a first additive; 1-2 parts of glass fiber; the fabric comprises the following components in parts by weight: 80-100 parts of water; 400-450 parts of cement; 1000-2000 parts of 5-25mm crushed stone; 1-3 parts of a second additive; 50-100 parts of 1mm-5mm diene rubber particles; 10-50 parts of nano-scale diene rubber powder. The concrete prepared by the invention has high strength, excellent water permeability and higher wear resistance and crack resistance.
Description
Technical Field
The invention relates to the technical field of concrete, in particular to high-strength pervious concrete.
Background
Because the urban rainfall intensity and frequency are increased by the urban heat island effect, and in the process of urban construction, the earth surface of a modern city is mostly covered by the house building of reinforced concrete and a water-tight road surface, compared with natural soil, the common concrete road surface is lack of the capacities of breathing, absorbing heat and permeating rainwater, and a series of environmental problems are brought; the pervious concrete is porous concrete, and compared with common concrete, the pervious concrete can enable rainwater to rapidly penetrate into the ground surface, effectively replenish underground water and protect urban natural water systems from being damaged.
However, because the pervious concrete has a large number of pervious gaps, the strength of which is affected by the gaps and is lower than that of common concrete, the Chinese patent with the prior publication number of CN105906246A discloses pervious concrete and a terrace manufacturing process using the pervious concrete, and the pervious concrete comprises, by mass, 90-110 parts of stones, 18-22 parts of cement, 0.5-0.6 part of gelling agent and 5-8 parts of water; the permeable terrace manufactured according to the invention can adopt various construction schemes, the permeability coefficient is higher than 2.7mm/s, and no dust and PM2.5 are generated.
However, after the pervious concrete is hardened by cement-bonded stones, the tensile property of the concrete is poor, and when the pervious concrete is subjected to external force, a large number of structural cracks appear in the concrete, so that the strength of the concrete is affected.
Disclosure of Invention
The invention aims to provide high-strength pervious concrete which has the advantages of good crack resistance and high strength.
The technical purpose of the invention is realized by the following technical scheme:
the high-strength pervious concrete comprises a base material used as a base layer and a fabric used as a surface layer, wherein the base material comprises the following components in parts by weight:
80-100 parts of water
400-450 parts of cement
1000-2000 parts of 5-25mm broken stone
1-3 parts of first additive
1-2 parts of glass fiber
The fabric comprises the following components in parts by weight:
80-100 parts of water
400-450 parts of cement
1000-2000 parts of 5-25mm broken stone
1-3 parts of second additive
50-100 parts of 1mm-5mm diene rubber particles
10-50 parts of nano-scale diene rubber powder.
Through adopting above-mentioned technical scheme, have following advantage for prior art: firstly, cement and broken stones are adopted as cementing materials, the cement proportion is low, the cement can be saved, and cracks caused by overlarge temperature difference inside and outside the concrete due to the fact that heat emitted by hydration reaction of the cement is excessive when the cement proportion is excessive can be avoided; secondly, the cement-ash ratio is low, a large amount of water is not needed in the hydration reaction of cement, the redundant water is used for increasing the fluidity required by construction, the redundant water is reduced, and the water which is not evaporated is prevented from remaining in the gaps of the concrete, so that the strength of the concrete is improved; thirdly, glass fiber is doped into the base material used as the base layer, and is dispersed into the cementing structure of cement and gravel by stirring, so that the glass fiber is distributed in the base material to form a reinforcing network which is distributed in a non-directional way and arranged in a mutually staggered way, thereby greatly improving the bending strength and the compressive strength of the concrete base material, reducing the probability of concrete cracks and preventing the generated small cracks from being continuously expanded; fourthly, the fabric used as the surface layer is doped with rubber particles and rubber powder, and the compression resistance of the concrete is further improved by doping the rubber particles and the rubber powder; and fifthly, the reinforcing and protecting components are mixed in the admixture, so that the strength of the concrete can be improved, and the falling speed of the strength of the concrete can be slowed down when the internal and surface structures of the concrete are acted by the outside after the concrete is poured and formed.
The invention is further configured to: the strength of the mother rock of the macadam is more than 120 MPa.
By adopting the technical scheme, the broken stone is taken as the aggregate part and is one of concrete strength sources, and the mother rock with the strength greater than 120Mpa is selected to produce the broken stone, so that high-strength aggregate is provided for the concrete part, the pressure is shared, and the concrete strength is improved.
The invention is further configured to: the diameter of the glass fiber is less than 0.5mm, and the length of the glass fiber is 10 mm-50 mm.
Through adopting above-mentioned technical scheme, glass fiber is doped in the base-material, glass fiber distributes in the transition district around the aggregate after the shaping, increase transition district intensity, and eliminate the influence of the gap that exists in a large number in the pervious concrete to the concrete steadiness as connection structure, therefore, in order to guarantee that glass fiber can evenly distributed in the concrete, glass fiber diameter is less than 0.5mm setting, length setting is at 10mm ~50mm, on the one hand, the glass fiber that the diameter is less than 0.5mm setting can avoid glass fiber to influence the periphery and cover the intermeshing bonding between the rubble that has cement, on the other hand, glass fiber's length is longer, increase the force moment, thereby improve the bulk strength.
The invention is further configured to: the surface of the glass fiber is coated with ethylene propylene rubber.
By adopting the technical scheme, the glass fiber has good corrosion resistance and high mechanical strength, but has poor wear resistance and large brittleness; therefore, the ethylene propylene rubber is coated on the surface of the glass fiber, the main chain of the ethylene propylene rubber is composed of saturated hydrocarbon with stable chemical property, the ethylene propylene rubber has good impact elasticity, and is wrapped outside the glass fiber to improve the toughness of the glass fiber, so that the service cycle of the concrete is prolonged; in addition, when the glass fiber is in concrete and is in an alkaline environment, and after the glass fiber is hardened to form a permeable terrace, the strength of the glass fiber is influenced by acidic rainwater, and the ethylene propylene rubber has good chemical resistance, good aging resistance and capability of slowing down the reduction speed of the strength of the concrete.
The invention is further configured to: the first additive comprises, by mass, 20-22.5% of a polycarboxylic acid water reducer, 12-27% of triethanolamine, 0.01-0.4% of a phenolic antioxidant, 0.02-0.048% of sodium dodecyl sulfate, 5-20% of a multi-bacterial phenol, and the balance of water.
By adopting the technical scheme, the polycarboxylic acid water reducer has a large number of strong hydrophilic groups, has high-efficiency water reducing performance, is matched with triethanolamine for use, reduces the water consumption for mixing concrete, increases the early strength of the concrete, and slows down the slump loss, thereby reducing the water cement ratio and improving the strength of the concrete; because the glass fiber and the ethylene propylene rubber wrapped outside the glass fiber are added into the base material, the phenolic antioxidant is added into the base material, the generated free radicals are eliminated, the oxidation speed is slowed down, and the ethylene propylene rubber is protected, thereby protecting the glass fiber; the water-permeable terrace has a large number of gaps, so that the frost resistance of the water-permeable terrace is poor, and the frost resistance of the water-permeable terrace is improved by adding the sodium dodecyl sulfate; the permeable terrace has a large amount of gaps, the humidity in the gaps is large, a large amount of organic substances are enriched, a lot of bacteria, toxic bacteria and the like which can damage a concrete structure are bred, multi-bacterial phenol is added, the growth of the bacteria is prevented and limited, and the concrete is protected.
The invention is further configured to: the base material also comprises 1-5 components of reinforcing agent.
By adopting the technical scheme, the reinforcing agent is mixed in the base material, and the strength of the concrete is improved by the reinforcing agent.
The invention is further configured to: the enhancer comprises, by mass, 8-15% of diethylene glycol, 15-20% of syrup, 3-5% of glycerol, 2-4% of triethanolamine, 2-4% of anhydrous sodium sulfite and the balance of water.
By adopting the technical scheme, the water consumption during cement mixing is reduced through the reinforcing agent, free lime in cement cannot be easily separated out, crystal liquid can form crystals in stable cement paste, and the drying shrinkage and cracking of concrete are reduced; in addition, the hydration heat of the cement can be reduced, and the quality of the concrete is improved.
The invention is further configured to: the second additive comprises, by mass, 20-22.5% of a polycarboxylic acid water reducing agent, 12-27% of triethanolamine, 5-10% of carbon black, 0.5-1% of thiobisphenol and the balance of water.
By adopting the technical scheme, the polycarboxylic acid water reducer has a large number of strong hydrophilic groups, has high-efficiency water reducing performance, is matched with triethanolamine for use, reduces the water consumption for mixing concrete, increases the early strength of the concrete, and slows down the slump loss, thereby reducing the water cement ratio and improving the strength of the concrete; carbon black is added into the fabric, is used as a light shielding agent of rubber, and is cooperated with thiobisphenol used as an antioxidant component to protect a concrete part directly exposed to sunlight, so that the aging resistance of the concrete part is improved, and the stability of the concrete part is improved.
The invention is further configured to: the fabric further comprises 10-50 parts of an abrasion-resistant agent.
By adopting the technical scheme, as the fabric is used as the contact surface of the concrete and has friction with external objects, the wear-resisting agent is added into the fabric, so that the wear resistance of the fabric is improved, the service life of the fabric is prolonged, and the later maintenance cost is reduced.
The invention is further configured to: the wear-resisting agent is wear-resisting ceramic particles.
By adopting the technical scheme, the wear-resistant ceramic particles are doped in the fabric, so that the wear-resistant performance of the fabric is improved, and the surface of concrete is protected.
In conclusion, the invention has the following beneficial effects:
1. the base material doped with the glass fiber is used as a base layer, and the glass fiber is distributed in the base material in a non-directional and staggered manner, so that the strength of the concrete is enhanced;
2. the fabric doped with the rubber particles and the nano-scale rubber powder is used as a surface layer, and the rubber particles and the rubber powder are distributed in a transition region around the aggregate to enhance the compression resistance of the aggregate, so that the compression resistance of the concrete is improved;
3. the first admixture is mixed with the multi-bacterial phenol to inhibit bacteria generated in the concrete, thereby protecting the concrete structure and prolonging the service life of the concrete.
Detailed Description
The present invention will be described in further detail with reference to examples.
The first embodiment is as follows:
the high-strength pervious concrete is used as a base material of a base layer, and comprises the following components in parts by weight:
80 portions of water
400 portions of cement
1000 parts of 5-25mm broken stone
1 part of first additive
Glass fiber 1 part
1 part of reinforcing agent
The diameter of the used glass fiber is not more than 0.5mm, the length of the glass fiber is 10mm, and the surface of the glass fiber is coated with ethylene propylene rubber, wherein the ethylene propylene rubber is selected.
The first additive comprises the following components in percentage by mass:
20% of polycarboxylic acid water reducing agent, 12% of triethanolamine, 0.01% of phenol antioxidant, 0.02% of sodium dodecyl sulfate, 5% of multi-bacterial phenol and the balance of water.
The reinforcing agent comprises the following components in percentage by mass:
8% of diethylene glycol, 15% of syrup, 3% of glycerol, 2% of triethanolamine, 2% of anhydrous sodium sulfite and the balance of water.
Example two:
the high-strength pervious concrete is used as a base material of a base layer, and comprises the following components in parts by weight:
90 portions of water
430 portions of cement
1500 parts of 5-25mm broken stone
2 parts of first additive
Glass fiber 1.5 parts
3 parts of reinforcing agent
The diameter of the used glass fiber is not more than 0.5mm, the length of the glass fiber is 30mm, and the surface of the glass fiber is coated with ethylene propylene rubber, wherein the ethylene propylene rubber is selected.
The first additive comprises the following components in percentage by mass:
21 percent of polycarboxylic acid water reducing agent, 20 percent of triethanolamine, 0.2 percent of phenol antioxidant, 0.03 percent of sodium dodecyl sulfate, 14 percent of multi-bacterial phenol and the balance of water.
The reinforcing agent comprises the following components in percentage by mass:
11% of diethylene glycol, 18% of syrup, 4% of glycerol, 3% of triethanolamine, 3% of anhydrous sodium sulfite and the balance of water.
Example three:
the high-strength pervious concrete is used as a base material of a base layer, and comprises the following components in parts by weight:
100 portions of water
450 portions of cement
2000 parts of 5-25mm broken stone
3 parts of first additive
2 portions of glass fiber
5 parts of reinforcing agent
The diameter of the used glass fiber is not more than 0.5mm, the length is 50mm, and the surface is coated with ethylene propylene rubber, wherein the ethylene propylene rubber is selected.
The first additive comprises the following components in percentage by mass:
22.5 percent of polycarboxylic acid water reducing agent, 27 percent of triethanolamine, 0.4 percent of phenol antioxidant, 0.048 percent of sodium dodecyl sulfate, 20 percent of multi-bacterial phenol and the balance of water.
The reinforcing agent comprises the following components in percentage by mass:
15% of diethylene glycol, 20% of syrup, 5% of glycerol, 4% of triethanolamine, 4% of anhydrous sodium sulfite and the balance of water.
The detection method comprises the following steps:
(1) concrete strength: measuring according to GB/T50107-2010 concrete strength test evaluation standard;
(2) concrete water permeability: performing memorial determination according to a determination method of road surface water permeability coefficient in CJJ/T135-2009 pervious concrete pavement technical regulation;
(3) wear resistance of concrete: the determination is carried out according to GB/T16925-1997 method for testing the wear resistance of concrete and products thereof.
The results are shown in the following table:
| sample (I) | Strength grade | Water permeability mm/s |
| Example one | C30 | 4 |
| Example two | C35 | 3.5 |
| EXAMPLE III | C35 | 3 |
As can be seen from the above table, the concrete base material prepared by the invention has high strength and good water permeability, and particularly, the high-strength water permeable concrete prepared by the second embodiment has high strength grade and excellent water permeability.
Example four:
the high-strength pervious concrete is used for a fabric of a surface layer, and comprises the following components in parts by weight:
80 portions of water
400 portions of cement
1000 parts of 5-25mm broken stone
1 part of second additive
50 parts of 1mm-5mm diene rubber particles
10 parts of nano-scale diene rubber powder
10 portions of wear-resisting agent
The second additive comprises the following components in percentage by mass:
20% of polycarboxylic acid water reducing agent, 12% of triethanolamine, 5% of carbon black, 0.5% of thiobisphenol and the balance of water.
Example five:
the high-strength pervious concrete is used for a fabric of a surface layer, and comprises the following components in parts by weight:
90 portions of water
425 parts of cement
1500 parts of 5-25mm broken stone
2 portions of second additive
75 parts of 1mm-5mm diene rubber particles
35 parts of nano-scale diene rubber powder
35 portions of wear-resisting agent
The second additive comprises the following components in percentage by mass:
21% of polycarboxylic acid water reducing agent, 20% of triethanolamine, 8% of carbon black, 0.8% of thiobisphenol and the balance of water.
Example six:
the high-strength pervious concrete is used for a fabric of a surface layer, and comprises the following components in parts by weight:
100 portions of water
450 portions of cement
2000 parts of 5-25mm broken stone
3 portions of second additive
100 parts of 1mm-5mm diene rubber particles
50 parts of nano-scale diene rubber powder
50 portions of wear-resisting agent
The second additive comprises the following components in percentage by mass:
22.5 percent of polycarboxylic acid water reducing agent, 27 percent of triethanolamine, 10 percent of carbon black, 1 percent of thiobisphenol and the balance of water.
The detection method comprises the following steps:
(1) concrete strength: measuring according to GB/T50107-2010 concrete strength test evaluation standard;
(2) concrete water permeability: performing memorial determination according to a determination method of road surface water permeability coefficient in CJJ/T135-2009 pervious concrete pavement technical regulation;
(3) wear resistance of concrete: the determination is carried out according to GB/T16925-1997 method for testing the wear resistance of concrete and products thereof.
The results are shown in the following table:
| sample (I) | Strength grade | Water permeability mm/s | Abrasion resistance kg/m2 |
| Example four | C30 | 3 | 1.4 |
| EXAMPLE five | C35 | 3.5 | 1.4 |
| EXAMPLE six | C30 | 2.5 | 1.3 |
From the above table, the concrete fabric prepared by the invention has high strength, good wear resistance and good water permeability, and particularly the concrete fabric prepared in the fifth embodiment has excellent strength grade and water permeability and good wear resistance.
In conclusion, the matching of the base material and the fabric is selected according to the cost accounting and the requirements of the strength and the water permeability of the concrete required by construction, so that the strength, the water permeability and the wear resistance of the formed concrete are improved.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (6)
1. The high-strength pervious concrete comprises a base material used as a base layer and a fabric used as a surface layer, and is characterized in that the base material comprises the following components in parts by weight:
80-100 parts of water
400-450 parts of cement
1000-2000 parts of 5-25mm broken stone
1-3 parts of first additive
1-2 parts of glass fiber
The base material also comprises 1-5 parts of reinforcing agent, wherein the reinforcing agent comprises the following components, by mass, 8-15% of diethylene glycol, 15-20% of syrup, 3-5% of glycerol, 2-4% of triethanolamine, 2-4% of anhydrous sodium sulfite and the balance of water;
the fabric comprises the following components in parts by weight:
80-100 parts of water
400-450 parts of cement
1000-2000 parts of 5-25mm broken stone
1-3 parts of second additive
50-100 parts of 1mm-5mm diene rubber particles
10-50 parts of nano-scale diene rubber powder
The first additive comprises, by mass, 20-22.5% of a polycarboxylic acid water reducer, 12-27% of triethanolamine, 0.01-0.4% of a phenolic antioxidant, 0.02-0.048% of sodium dodecyl sulfate, 5-20% of a multi-bacterial phenol and the balance of water;
the second additive comprises, by mass, 20-22.5% of a polycarboxylic acid water reducing agent, 12-27% of triethanolamine, 5-10% of carbon black, 0.5-1% of thiobisphenol and the balance of water.
2. The high-strength pervious concrete according to claim 1, characterized in that: the strength of the mother rock of the macadam is more than 120 MPa.
3. The high-strength pervious concrete according to claim 1, characterized in that: the diameter of the glass fiber is less than 0.5mm, and the length of the glass fiber is 10 mm-50 mm.
4. The high-strength pervious concrete according to claim 3, wherein: the surface of the glass fiber is coated with ethylene propylene rubber.
5. The high-strength pervious concrete according to claim 1, characterized in that: the fabric further comprises 10-50 parts of an abrasion-resistant agent.
6. The high-strength pervious concrete according to claim 5, wherein: the wear-resisting agent is wear-resisting ceramic particles.
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| CN108793896A (en) * | 2018-08-28 | 2018-11-13 | 深圳市晶特智造科技有限公司 | A kind of pervious concrete and preparation method thereof |
| CN109206082A (en) * | 2018-09-30 | 2019-01-15 | 安徽远山电力工程有限公司 | A kind of high-strength composite fiber reinforcement honeycomb cement self-heat conserving filled wall |
| CN112811867B (en) * | 2021-01-18 | 2022-05-17 | 涿州市恒旗建材有限公司 | Pervious concrete and preparation method thereof |
| CN115231870A (en) * | 2021-04-22 | 2022-10-25 | 泰安市联强远大住宅工业有限公司 | Concrete formwork manufactured by utilizing waste glass fiber powder and manufacturing method thereof |
| CN113754468A (en) * | 2021-07-07 | 2021-12-07 | 黑龙江常岭建材科技有限公司 | Concrete surface reinforcing agent |
| CN113429167B (en) * | 2021-07-13 | 2022-06-24 | 扬州通惠系统集成科技有限公司 | High-strength pervious concrete suitable for sponge city construction and preparation method thereof |
| CN117362074B (en) * | 2023-10-10 | 2024-06-11 | 邯郸市康洁节能材料科技有限公司 | Permeable concrete for highway construction and preparation method thereof |
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| CN106830834A (en) * | 2017-01-24 | 2017-06-13 | 葛兆明 | Cement polymer base high-performance concrete permeable pavior brick and its manufacture method |
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| CN106830834A (en) * | 2017-01-24 | 2017-06-13 | 葛兆明 | Cement polymer base high-performance concrete permeable pavior brick and its manufacture method |
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Denomination of invention: High strength permeable concrete Effective date of registration: 20230627 Granted publication date: 20201211 Pledgee: Bank of Chengdu science and technology branch of Limited by Share Ltd. Pledgor: CHENGDU PRECISION CONCRETE Co.,Ltd. Registration number: Y2023980045596 |