CN112624698A - Industrial waste pervious concrete and preparation method thereof - Google Patents
Industrial waste pervious concrete and preparation method thereof Download PDFInfo
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- CN112624698A CN112624698A CN202011533693.2A CN202011533693A CN112624698A CN 112624698 A CN112624698 A CN 112624698A CN 202011533693 A CN202011533693 A CN 202011533693A CN 112624698 A CN112624698 A CN 112624698A
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- water
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
- C04B16/0616—Macromolecular compounds fibrous from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B16/0625—Polyalkenes, e.g. polyethylene
- C04B16/0633—Polypropylene
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/021—Agglomerated materials, e.g. artificial aggregates agglomerated by a mineral binder, e.g. cement
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/12—Nitrogen containing compounds organic derivatives of hydrazine
- C04B24/122—Hydroxy amines
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses an industrial waste pervious concrete and a preparation method thereof, wherein the industrial waste pervious concrete comprises the following components: cement, siliceous sand grains, waste stone, fly ash, water, a water reducing agent, lightweight aggregate, triethanolamine and polypropylene fiber, comprising the following steps: crushing industrial waste; selecting raw materials; preparing fly ash ceramsite; preparing lightweight aggregate; preparing an additive; stirring and mixing. The fly ash and the waste stone are added into raw materials for preparing the concrete, so that industrial wastes generated by a thermal power plant can be recycled, and the strength and the adaptability of the pervious concrete can be enhanced.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to industrial waste pervious concrete and a preparation method thereof.
Background
Pervious concrete is also called porous concrete, sand-free concrete and pervious terrace. The porous light concrete is prepared by mixing aggregate, cement, reinforcing agent and water, does not contain fine aggregate, and the permeable concrete has a cellular structure with uniformly distributed pores formed by coating a thin layer of cement slurry on the surface of coarse aggregate and mutually bonding the thin layer of cement slurry, so the porous light concrete has the characteristics of air permeability, water permeability and light weight.
The paving material can make rainwater flow into the ground, effectively replenish underground water, relieve some urban environmental problems such as rapid decline of urban underground water level and the like, effectively eliminate harm of oil compounds on the ground and the like to environmental pollution, simultaneously protect the underground water, maintain ecological balance and relieve urban heat island effect.
The pervious concrete used in the market at present has an insufficient pervious effect, and the pervious concrete has insufficient autumn safety, so that the potential risk of collapse and damage exists, and unnecessary loss is caused.
Disclosure of Invention
The invention aims to provide permeable concrete of industrial waste and a preparation method thereof, and aims to solve the problems that the permeable concrete used in the market at present has poor permeable effect, insufficient autumn safety degree of the permeable concrete, potential collapse damage and unnecessary loss.
In order to achieve the purpose, the invention provides the following technical scheme: the permeable concrete for industrial wastes comprises the following components:
cement, siliceous sand grains, waste stone, fly ash, water, a water reducing agent, lightweight aggregate, triethanolamine and polypropylene fiber.
Preferably, the cement is ordinary portland cement P.O42.5.
Preferably, the crushed waste rock has an average particle size of 18 to 22 mm.
Preferably, the water reducing agent is a naphthalene-based high-efficiency water reducing agent, and the mixing amount of the water reducing agent ranges from 0.75% to 1.5% of powder and 1.5% to 2.5% of liquid.
A preparation method of industrial waste pervious concrete comprises the following steps:
(1) crushing industrial waste: crushing the collected waste rocks, wherein the waste rocks are ores and mountain rocks, and crushing the waste rocks to an average particle size of 18-22 mm;
(2) selecting raw materials: the sand for preparing concrete is preferably hard siliceous sand grains without impurities and edges, and the water for preparing concrete is pollution-free water, such as polluted water, which is firstly checked to meet the regulation of the Standard for concrete mixing Water (JGJ 63-89);
(3) preparing the fly ash ceramsite: the fly ash is used as a main raw material, and is mixed with a proper amount of materials such as carbide slag, gypsum, an additive and the like to prepare the fly ash through metering, proportioning, molding, hydration and hydrothermal synthesis reaction or natural hydraulic reaction;
(4) preparation of lightweight aggregate: preparing light coarse aggregate and light sand with cement and water, wherein the adopted light coarse aggregate mainly comprises fly ash ceramsite and ceramic sand, clay ceramsite and ceramic sand, shale ceramsite and ceramic sand, pumice, scoria and the like in natural light aggregate;
(5) preparing an additive: triethanolamine and polypropylene fibers are selected, the triethanolamine has a certain reinforcing effect on the polypropylene fibers, the polypropylene fibers are insoluble in water, but the polypropylene fibers are soluble in the triethanolamine, and the triethanolamine can be dissolved in water, and the polypropylene fibers are uniformly dispersed in the triethanolamine;
(6) stirring and mixing:
A. adding cement, siliceous sand grains, waste stone, fly ash, lightweight aggregate, triethanolamine and polypropylene fiber into a stirring device;
B. adding water into the stirring device, and stirring for 10-15 min;
C. adding a water reducing agent into the phase stirring device, and then stirring again until the mixture is uniformly mixed;
D. and opening the stirring device to discharge, thus obtaining the pervious concrete.
Compared with the prior art, the invention has the beneficial effects that: the industrial waste pervious concrete and the preparation method thereof are as follows:
(1) the fly ash and the waste stone are added into raw materials for preparing the concrete, the fly ash is industrial waste generated by a thermal power plant, the waste stone is construction waste, after the fly ash is added into the concrete, the shock resistance of the concrete is improved, the frost resistance of the concrete is enhanced, the industrial waste generated by the thermal power plant can be recycled, the cost is saved, the resources are recycled, and meanwhile, the strength and the adaptability of the pervious concrete are enhanced;
(2) at this concrete of preparation, add triethanolamine and polypropylene fiber to agitating unit's inside, polypropylene fiber can so that the intensity increase of this concrete and can make this concrete become wear-resisting, it is corrosion-resistant, triethanolamine is as the medium, can make polypropylene fiber even mix with other materials of concrete, add the water-reducing agent when stirring the concrete, the water consumption when can making the stirring reduces, the using water wisely, make the concrete water permeability that this water permeability is good better, and intensity is higher, life increases.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The invention provides a technical scheme that: the permeable concrete for industrial wastes comprises the following components:
cement, siliceous sand grains, waste stone, fly ash, water, a water reducing agent, lightweight aggregate, triethanolamine and polypropylene fiber, wherein the cement is ordinary Portland cement P.O42.5, the average grain diameter of the crushed waste stone is 18-22mm, the water reducing agent is a naphthalene-based high-efficiency water reducing agent, the mixing amount of the water reducing agent is 0.75-1.5 percent of powder and 1.5-2.5 percent of liquid.
Example two
The invention provides a technical scheme that: a preparation method of industrial waste pervious concrete comprises the following steps: the method comprises the following steps:
(1) crushing industrial waste: crushing the collected waste rocks, wherein the waste rocks are ores and mountain rocks, and crushing the waste rocks until the average particle size is 18 mm;
(2) selecting raw materials: the sand for preparing concrete is preferably hard siliceous sand grains without impurities and edges, and the water for preparing concrete is pollution-free water, such as polluted water, which is firstly checked to meet the regulation of the Standard for concrete mixing Water (JGJ 63-89);
(3) preparing the fly ash ceramsite: the fly ash is used as a main raw material, and is mixed with a proper amount of materials such as carbide slag, gypsum, an additive and the like to prepare the fly ash through metering, proportioning, molding, hydration and hydrothermal synthesis reaction or natural hydraulic reaction;
(4) preparation of lightweight aggregate: preparing light coarse aggregate and light sand with cement and water, wherein the adopted light coarse aggregate mainly comprises fly ash ceramsite and ceramic sand, clay ceramsite and ceramic sand, shale ceramsite and ceramic sand, pumice, scoria and the like in natural light aggregate;
(5) preparing an additive: triethanolamine and polypropylene fibers are selected, the triethanolamine has a certain reinforcing effect on the polypropylene fibers, the polypropylene fibers are insoluble in water, but the polypropylene fibers are soluble in the triethanolamine, and the triethanolamine can be dissolved in water, and the polypropylene fibers are uniformly dispersed in the triethanolamine;
(6) stirring and mixing:
A. adding cement, siliceous sand grains, waste stone, fly ash, lightweight aggregate, triethanolamine and polypropylene fiber into a stirring device;
B. water will be added again inside the stirring device, water: cement: siliceous sand: the waste rock is equal to 0.16:1:2.47:4.76, namely 175kg of water, 284kg of cement, 702kg of siliceous sand grains and 1351kg of waste rock are fully stirred for 10 min;
C. adding a water reducing agent into the stirring device, and then stirring again until the water reducing agent and the water reducing agent are uniformly mixed;
D. and opening the stirring device to discharge, thus obtaining the pervious concrete with the strength of C15.
EXAMPLE III
The invention provides a technical scheme that: a preparation method of industrial waste pervious concrete comprises the following steps: the method comprises the following steps:
(1) crushing industrial waste: crushing the collected waste rocks, wherein the waste rocks are ores and mountain rocks, and crushing the waste rocks until the average particle size is 19 mm;
(2) selecting raw materials: the sand for preparing concrete is preferably hard siliceous sand grains without impurities and edges, and the water for preparing concrete is pollution-free water, such as polluted water, which is firstly checked to meet the regulation of the Standard for concrete mixing Water (JGJ 63-89);
(3) preparing the fly ash ceramsite: the fly ash is used as a main raw material, and is mixed with a proper amount of materials such as carbide slag, gypsum, an additive and the like to prepare the fly ash through metering, proportioning, molding, hydration and hydrothermal synthesis reaction or natural hydraulic reaction;
(4) preparation of lightweight aggregate: preparing light coarse aggregate and light sand with cement and water, wherein the adopted light coarse aggregate mainly comprises fly ash ceramsite and ceramic sand, clay ceramsite and ceramic sand, shale ceramsite and ceramic sand, pumice, scoria and the like in natural light aggregate;
(5) preparing an additive: triethanolamine and polypropylene fibers are selected, the triethanolamine has a certain reinforcing effect on the polypropylene fibers, the polypropylene fibers are insoluble in water, but the polypropylene fibers are soluble in the triethanolamine, and the triethanolamine can be dissolved in water, and the polypropylene fibers are uniformly dispersed in the triethanolamine;
(6) stirring and mixing:
A. adding cement, siliceous sand grains, waste stone, fly ash, lightweight aggregate, triethanolamine and polypropylene fiber into a stirring device;
B. water will be added again inside the stirring device, water: cement: siliceous sand: the waste rock is equal to 0.51:1:1.81:3.68, namely 175kg of water, 343kg of cement, 621kg of siliceous sand grains and 1261kg of waste rock, and fully stirring is carried out for 12 min;
C. adding a water reducing agent into the stirring device, and then stirring again until the water reducing agent and the water reducing agent are uniformly mixed;
D. and opening the stirring device to discharge, thus obtaining the pervious concrete with the strength of C20.
Example four
The invention provides a technical scheme that: a preparation method of industrial waste pervious concrete comprises the following steps: the method comprises the following steps:
(1) crushing industrial waste: crushing the collected waste rocks, wherein the waste rocks are ores and mountain rocks, and crushing the waste rocks to an average particle size of 20 mm;
(2) selecting raw materials: the sand for preparing concrete is preferably hard siliceous sand grains without impurities and edges, and the water for preparing concrete is pollution-free water, such as polluted water, which is firstly checked to meet the regulation of the Standard for concrete mixing Water (JGJ 63-89);
(3) preparing the fly ash ceramsite: the fly ash is used as a main raw material, and is mixed with a proper amount of materials such as carbide slag, gypsum, an additive and the like to prepare the fly ash through metering, proportioning, molding, hydration and hydrothermal synthesis reaction or natural hydraulic reaction;
(4) preparation of lightweight aggregate: preparing light coarse aggregate and light sand with cement and water, wherein the adopted light coarse aggregate mainly comprises fly ash ceramsite and ceramic sand, clay ceramsite and ceramic sand, shale ceramsite and ceramic sand, pumice, scoria and the like in natural light aggregate;
(5) preparing an additive: triethanolamine and polypropylene fibers are selected, the triethanolamine has a certain reinforcing effect on the polypropylene fibers, the polypropylene fibers are insoluble in water, but the polypropylene fibers are soluble in the triethanolamine, and the triethanolamine can be dissolved in water, and the polypropylene fibers are uniformly dispersed in the triethanolamine;
(6) stirring and mixing:
A. adding cement, siliceous sand grains, waste stone, fly ash, lightweight aggregate, triethanolamine and polypropylene fiber into a stirring device;
B. water will be added again inside the stirring device, water: cement: siliceous sand: the waste stone is equal to 0.44:1:1.42:3.17, namely 175kg of water, 198kg of cement, 266kg of siliceous sand grains and 1261kg of waste stone are fully stirred for 13 min;
C. adding a water reducing agent into the stirring device, and then stirring again until the water reducing agent and the water reducing agent are uniformly mixed;
D. and opening the stirring device to discharge, thus obtaining the pervious concrete with the strength of C25.
EXAMPLE five
The invention provides a technical scheme that: a preparation method of industrial waste pervious concrete comprises the following steps: the method comprises the following steps:
(1) crushing industrial waste: crushing the collected waste rocks, wherein the waste rocks are ores and mountain rocks, and crushing the waste rocks until the average particle size is 21 mm;
(2) selecting raw materials: the sand for preparing concrete is preferably hard siliceous sand grains without impurities and edges, and the water for preparing concrete is pollution-free water, such as polluted water, which is firstly checked to meet the regulation of the Standard for concrete mixing Water (JGJ 63-89);
(3) preparing the fly ash ceramsite: the fly ash is used as a main raw material, and is mixed with a proper amount of materials such as carbide slag, gypsum, an additive and the like to prepare the fly ash through metering, proportioning, molding, hydration and hydrothermal synthesis reaction or natural hydraulic reaction;
(4) preparation of lightweight aggregate: preparing light coarse aggregate and light sand with cement and water, wherein the adopted light coarse aggregate mainly comprises fly ash ceramsite and ceramic sand, clay ceramsite and ceramic sand, shale ceramsite and ceramic sand, pumice, scoria and the like in natural light aggregate;
(5) preparing an additive: triethanolamine and polypropylene fibers are selected, the triethanolamine has a certain reinforcing effect on the polypropylene fibers, the polypropylene fibers are insoluble in water, but the polypropylene fibers are soluble in the triethanolamine, and the triethanolamine can be dissolved in water, and the polypropylene fibers are uniformly dispersed in the triethanolamine;
(6) stirring and mixing:
A. adding cement, siliceous sand grains, waste stone, fly ash, lightweight aggregate, triethanolamine and polypropylene fiber into a stirring device;
B. water will be added again inside the stirring device, water: cement: siliceous sand: the waste stone is equal to 0.38:1:1.11:2.72, namely 175kg of water, 460kg of cement, 511kg of siliceous sand grains and 1251kg of waste stone are fully stirred for 14 min;
C. adding a water reducing agent into the stirring device, and then stirring again until the water reducing agent and the water reducing agent are uniformly mixed;
D. and opening the stirring device to discharge, thus obtaining the pervious concrete with the strength of C30.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (5)
1. The permeable concrete for industrial waste is characterized in that: comprises the following components:
cement, siliceous sand grains, waste stone, fly ash, water, a water reducing agent, lightweight aggregate, triethanolamine and polypropylene fiber.
2. The industrial waste pervious concrete of claim 1, wherein: the cement is ordinary Portland cement P.O42.5.
3. The industrial waste pervious concrete of claim 1, wherein: the average particle size of the crushed waste stone is 18-22 mm.
4. The industrial waste pervious concrete of claim 1, wherein: the water reducing agent is a naphthalene-based high-efficiency water reducing agent, and the mixing amount of the water reducing agent ranges from 0.75% to 1.5% of powder and 1.5% to 2.5% of liquid.
5. The preparation method of the industrial waste pervious concrete according to claim 1, characterized by comprising the following steps: the method comprises the following steps:
(1) crushing industrial waste: crushing the collected waste rocks, wherein the waste rocks are ores and mountain rocks, and crushing the waste rocks to an average particle size of 18-22 mm;
(2) selecting raw materials: the sand for preparing concrete is preferably hard siliceous sand grains without impurities and edges, and the water for preparing concrete is pollution-free water, such as polluted water, which is firstly checked to meet the regulation of the Standard for concrete mixing Water (JGJ 63-89);
(3) preparing the fly ash ceramsite: the fly ash is used as a main raw material, and is mixed with a proper amount of materials such as carbide slag, gypsum, an additive and the like to prepare the fly ash through metering, proportioning, molding, hydration and hydrothermal synthesis reaction or natural hydraulic reaction;
(4) preparation of lightweight aggregate: preparing light coarse aggregate and light sand with cement and water, wherein the adopted light coarse aggregate mainly comprises fly ash ceramsite and ceramic sand, clay ceramsite and ceramic sand, shale ceramsite and ceramic sand, pumice, scoria and the like in natural light aggregate;
(5) preparing an additive: triethanolamine and polypropylene fibers are selected, the triethanolamine has a certain reinforcing effect on the polypropylene fibers, the polypropylene fibers are insoluble in water, but the polypropylene fibers are soluble in the triethanolamine, and the triethanolamine can be dissolved in water, and the polypropylene fibers are uniformly dispersed in the triethanolamine;
(6) stirring and mixing:
A. adding cement, siliceous sand grains, waste stone, fly ash, lightweight aggregate, triethanolamine and polypropylene fiber into a stirring device;
B. adding water into the stirring device, and stirring for 10-15 min;
C. adding a water reducing agent into the phase stirring device, and then stirring again until the mixture is uniformly mixed;
D. and opening the stirring device to discharge, thus obtaining the pervious concrete.
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2020
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| CN107117901A (en) * | 2017-05-14 | 2017-09-01 | 汪逸凡 | A kind of preparation method of regenerative pervious concrete |
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