CN110002816A - Pervious concrete - Google Patents
Pervious concrete Download PDFInfo
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- CN110002816A CN110002816A CN201910201997.XA CN201910201997A CN110002816A CN 110002816 A CN110002816 A CN 110002816A CN 201910201997 A CN201910201997 A CN 201910201997A CN 110002816 A CN110002816 A CN 110002816A
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- 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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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to the field of building materials to provide a kind of pervious concrete for the low problem of pervious concrete intensity, the component including following mass fraction: 80-100 parts of water；30-40 parts of portland cement；50-60 parts of limestone gravel；Middle sand 30-35 parts；4-5 parts of stearyl chloride；5-6 parts of Amino-sulfonic Acid-based Water-reducer；Waste and old textile fabric 5-7 parts；0.5-1 parts of coupling agent.By the way that waste and old textile fabric is added, be conducive to rationally utilize waste and old textile fabric resource, also help the pollution for reducing waste and old textile fabric to environment, simultaneously, waste and old textile fabric is easy to be formed a kind of unrest in pervious concrete to support system, so that the directional stress of pervious concrete is dispersed, to advantageously reduce the quantity and size in pervious concrete crack, so that the waterproofing and anti-leakage ability of pervious concrete enhances, be conducive to improve the toughness of pervious concrete, and then be conducive to improve the tensile strength and compression strength of pervious concrete, so that the service life of pervious concrete extends.
Description
Technical field
The present invention relates to the field of building materials, more specifically, it relates to a kind of pervious concrete.
Background technique
Pervious concrete is also known as celluar concrete, is that one kind as made of aggregate, cement, reinforcing agent and water mixing is porous light
Matter concrete, it is free of fine aggregate.
But since pervious concrete generally requires the requirement for keeping perforation hole centainly to meet water penetration, so that
The internal structure of pervious concrete is than more loose, thus therefore the intensity for being easy to influence pervious concrete still has improved sky
Between.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of pervious concrete, has and improve thoroughly
The advantages of intensity of water coagulation soil.
To achieve the above object, the present invention provides the following technical scheme that
A kind of pervious concrete, the component including following mass fraction:
80-100 parts of water；
30-40 parts of portland cement；
50-60 parts of limestone gravel；
Middle sand 30-35 parts；
4-5 parts of stearyl chloride；
5-6 parts of Amino-sulfonic Acid-based Water-reducer；
Waste and old textile fabric 5-7 parts；
0.5-1 parts of coupling agent.
By adopting the above technical scheme, by the waste and old textile fabric of addition, be conducive to rationally utilize waste and old textile fabric resource,
So that the utilization rate of resource improves, the pollution for reducing waste and old textile fabric to environment is also helped, meanwhile, waste and old textile fabric holds
A kind of unrest is easily formed in pervious concrete to support system, so that the directional stress of pervious concrete is dispersed, thus favorably
Be conducive to improve so that the waterproofing and anti-leakage ability of pervious concrete enhances in the quantity and size for reducing pervious concrete crack
The toughness of pervious concrete, and then be conducive to improve the tensile strength and compression strength of pervious concrete, so that permeable coagulation
The service life of soil extends；By the way that Amino-sulfonic Acid-based Water-reducer is added, is conducive to the consistency for improving pervious concrete, makes
It obtains pervious concrete and is not easy the phenomenon that bleeding or isolation occur in stirring and transportational process, to be conducive to permeable coagulation
Limestone gravel and middle sand in soil are evenly distributed in pervious concrete, so that the density of pervious concrete is more uniform,
And then be conducive to improve the compression strength of pervious concrete；Meanwhile the amino on Amino-sulfonic Acid-based Water-reducer is also easy to
It reacts with the acid chloride group on stearyl chloride, generates amide groups, since amide groups has extremely strong hydrogen bond association ability, and
With stronger polarity, thus amide groups stability generally with higher and preferable high temperature resistance, and then be conducive to
Improve the stability and high temperature resistance of pervious concrete；In addition, the chain alkyl on stearyl chloride has hydrophobicity, from
And pervious concrete is made to be not readily susceptible to the erosion of water, so that pervious concrete is not allowed easy to aging, it is conducive to extend permeable mixed
Coagulate the service life of soil；Portland cement surface is easy water suction and forms the stronger silicone hydroxyl of polarity, and silicone hydroxyl is easy and amide groups
Formed hydrogen bond, thus be conducive to it is entangled to each other to form reticular structure between molecule, be conducive to improve pervious concrete consistency,
Simultaneously the compression strength of pervious concrete is enhanced；By the way that limestone gravel is added, limestone has good thermal conductivity, heavily fortified point
Solidity is conducive to the intensity for improving pervious concrete, so that the wearability of pervious concrete improves, to be conducive to improve permeable
The endurance quality of concrete；Meanwhile limestone also has good bonding capacity, so that limestone gravel is easier to mix with permeable
Solidifying soil coheres, and is dispersed in pervious concrete to be conducive to limestone gravel, so that the density of pervious concrete is more
Uniformly, so be conducive to improve pervious concrete compression strength.
The present invention is further arranged to: the coupling agent is silane coupling agent.
By adopting the above technical scheme, by using silane coupling agent as coupling agent, according to similar intermiscibility principle, silane
Contain element silicon in coupling agent and portland cement, is conducive to the compatibility for improving each component in pervious concrete, so that
Each component in pervious concrete is easier to be uniformly dispersed；Meanwhile silane coupling agent need to first hydrolyze shape when playing coupled action
At silanol, the stronger silicone hydroxyl containing polarized on silanol, the silicone hydroxyl on silanol is easy the silicone hydroxyl with portland cement surface
And amide groups formed hydrogen bond, be conducive to it is entangled to each other to form reticular structure between molecule so that the resistance to compression of pervious concrete
Enhanced strength.
The present invention is further arranged to: further include the component of following mass fraction:
0.5-0.7 parts of impregnating with silane agent.
By adopting the above technical scheme, by the way that impregnating with silane agent is added, impregnating with silane agent has good with pervious concrete
Adhesive force easily infiltrates into the inside of pervious concrete to form waterproof, anticorrosion, ventilative protective layer, advantageously reduces air
In moisture and carbon dioxide the case where forming acid and corroding pervious concrete, while being conducive to improve the resistance to of pervious concrete
Long performance and anti-ultraviolet property, are conducive to preferably protect pervious concrete, so that the durability of pervious concrete
It can improve.
The present invention is further arranged to: further include the component of following mass fraction:
10-12 parts of rubber latex.
By adopting the above technical scheme, by the way that rubber latex is added, be conducive to the toughness for enhancing pervious concrete, so that permeable
The compression strength and tensile strength of concrete enhance；Meanwhile the rubber by the way that emulsion form is added, be conducive to rubber and uniformly divide
Dissipate in pervious concrete, thus be conducive to improve pervious concrete toughness so that the tensile strength of pervious concrete and
Compression strength is stronger.
The present invention is further arranged to: the rubber is silicon rubber.
By adopting the above technical scheme, by using silicon rubber, the stronger silicone hydroxyl containing polarized in silicon rubber, on silicon rubber
Silicone hydroxyl be easy to form hydrogen with the silicone hydroxyl on portland cement surface, the silicone hydroxyl on silane coupling agent and with amide groups
Key, be conducive to it is entangled to each other to form reticular structure between molecule, thus be conducive to enhance pervious concrete compression strength.
The present invention is further arranged to: further include the component of following mass fraction:
5-7 parts of fumed silica.
By adopting the above technical scheme, by the way that fumed silica is added, be conducive to the thixotropy for improving pervious concrete, make
Pervious concrete is obtained when standing, limestone gravel and middle sand are not easy to precipitate, and are conducive to limestone gravel and middle sand exists
It is uniformly dispersed in pervious concrete, meanwhile, so that pervious concrete consistency during stirring reduces, it is convenient for pervious concrete
Stirring, convenient for saturating while being conducive to compression strength of the density uniformity to improve pervious concrete for improving pervious concrete
The stirring of water coagulation soil.
The present invention is further arranged to: further include the component of following mass fraction:
1-2 parts of bamboo fibre.
By adopting the above technical scheme, by the way that bamboo fibre is added, bamboo fibre has good gas permeability and stronger wear-resisting
Property, be conducive to keep to make the intensity of pervious concrete be not readily susceptible to influence while the water permeability of pervious concrete；Together
When, bamboo fibre also has antibacterial, antibacterial and anti-ultraviolet function, is conducive to protect pervious concrete, so that thoroughly
Water coagulation soil is not readily susceptible to corrode.
The present invention is further arranged to: further include the component of following mass fraction:
3-4 parts of polyimides.
By adopting the above technical scheme, by the way that polyimides is added, be conducive to the high temperature resistance for improving pervious concrete, make
Pervious concrete is obtained when being subjected to high temperature, compression strength is not readily susceptible to influence；Meanwhile the imide tool on polyimides
Have stronger polarity, imide is easy to form hydrogen bond with amide groups, be conducive to it is intermolecular entangled to each other to form reticular structure,
To be conducive to improve the compression strength of pervious concrete.
In conclusion the invention has the following advantages:
1. being conducive to by the way that waste and old textile fabric is added rationally using waste and old textile fabric resource, so that the utilization rate of resource mentions
Height also helps the pollution for reducing waste and old textile fabric to environment, meanwhile, waste and old textile fabric is easy the shape in pervious concrete
At a kind of unrest to support system, so that the directional stress of pervious concrete is dispersed, split to advantageously reduce pervious concrete
The quantity and size of seam are conducive to the toughness for improving pervious concrete so that the waterproofing and anti-leakage ability of pervious concrete enhances, into
And be conducive to improve the tensile strength and compression strength of pervious concrete, so that the service life of pervious concrete extends；
2. the amino on Amino-sulfonic Acid-based Water-reducer is easy to react with the acid chloride group on stearyl chloride, acyl is generated
Amido, due to amide groups have extremely strong hydrogen bond association ability, and have stronger polarity, thus amide groups generally have it is higher
Stability and preferable high temperature resistance, and then be conducive to improve pervious concrete stability and high temperature resistance；
3. the chain alkyl on 18 acyl chlorides has hydrophobicity, to be conducive to improve the hydrophobicity of pervious concrete, so that thoroughly
Water coagulation soil is not readily susceptible to the erosion of water, is conducive to the anti-permeability performance for improving pervious concrete；
4. portland cement surface is easy water suction and forms the stronger silicone hydroxyl of polarity, silicone hydroxyl is easy to form hydrogen bond with amide groups,
It is entangled to each other to form reticular structure between molecule to be conducive to, be conducive to the consistency for improving pervious concrete, make simultaneously
The compression strength of pervious concrete enhances.
Specific embodiment
With reference to embodiments, invention is further described in detail.
In following embodiment, portland cement uses the Wa stone P.O42.5 portland cement of Wuhan Yangluo cement plant production.
In following embodiment, limestone gravel uses Lingshou County to believe the partial size of a mineral products processing factory for the limestone of 10mm
Rubble.
In following embodiment, middle sand use the article No. of Lingshou County kind stone ore powder factory for 0180909 middle sand.
In following embodiment, stearyl chloride uses the stearyl chloride of Changzhou City Kefeng Chemical Industry Co., Ltd.
In following embodiment, Amino-sulfonic Acid-based Water-reducer uses the amino sulphur of Laiwu City Yan Hui building materials Co., Ltd
Hydrochlorate series high-efficiency water-reducing agent.
In following embodiment, coupling agent using Dewar chemical industry (Shanghai) Co., Ltd. model KH-550 it is silane coupled
Agent.
In following embodiment, the article No. that impregnating with silane agent uses Guangzhou up to flourishing age building materials Co., Ltd soaks for the silane of D-GW
Stain agent.
In following embodiment, rubber latex uses the silicon rubber of Cixi City long river Hong Guan silica gel factory.
In following embodiment, fumed silica use the model HN-200 mesh number of Jiangsu Hao Neng Chemical Co., Ltd. for
The fumed silica of 8000 mesh.
In following embodiment, bamboo fibre uses the model Z011's of the Jiangmen city Xinhui District town the Shuan Shui perfumery wood Jiang Weihua
Partial size is the bamboo fibre powder of 100 mesh.
In following embodiment, polyimides uses Suzhou to hide the trade mark for joining plasticizing Co., Ltd as the polyimides of GY-2.
Embodiment 1
A kind of pervious concrete, the component including following mass fraction:
Water 80kg；Portland cement 30kg；Limestone gravel 50kg；Middle sand 30kg；Stearyl chloride 4kg；Sulfamate system
High efficiency water reducing agent 5kg；Waste and old textile fabric 5kg；Coupling agent 0.5kg.
Pervious concrete the preparation method is as follows:
(1) in cement mixer, under normal temperature condition, portland cement 30kg is added, is stirred with the revolving speed of 150r/min；
(2) water 80kg, stearyl chloride 4kg, Amino-sulfonic Acid-based Water-reducer 5kg, waste and old weaving fibre are added while stirring
Dimension 5kg, coupling agent 0.5kg obtain pre-composition after mixing evenly；
(3) in sandstone blender, under normal temperature condition, limestone gravel 50kg, middle sand 30kg is added, with the revolving speed of 150r/min
It is stirred, obtains aggregate after mixing evenly；
(4) in concrete mixer, under normal temperature condition, pre-composition and aggregate is added, is stirred with the revolving speed of 150r/min
It mixes, is paved rapidly after mixing evenly to construction surface, form molding pervious concrete after conserving.
Embodiment 2
A kind of pervious concrete, the component including following mass fraction:
Water 90kg；Portland cement 35kg；Limestone gravel 55kg；Middle sand 33kg；Stearyl chloride 4.5kg；Sulfamate
Series high-efficiency water-reducing agent 5.5kg；Waste and old textile fabric 6kg；Coupling agent 0.8kg.
Pervious concrete the preparation method is as follows:
(1) in cement mixer, under normal temperature condition, portland cement 35kg is added, is stirred with the revolving speed of 150r/min；
(2) water 90kg, stearyl chloride 4.5kg, Amino-sulfonic Acid-based Water-reducer 5.5kg, waste and old spinning are added while stirring
Textured fiber 6kg, coupling agent 0.8kg obtain pre-composition after mixing evenly；
(3) in sandstone blender, under normal temperature condition, limestone gravel 55kg, middle sand 33kg is added, with the revolving speed of 150r/min
It is stirred, obtains aggregate after mixing evenly；
(4) in concrete mixer, under normal temperature condition, pre-composition and aggregate is added, is stirred with the revolving speed of 150r/min
It mixes, is paved rapidly after mixing evenly to construction surface, form molding pervious concrete after conserving.
Embodiment 3
A kind of pervious concrete, the component including following mass fraction:
Water 100kg；Portland cement 40kg；Limestone gravel 60kg；Middle sand 35kg；Stearyl chloride 5kg；Sulfamate system
High efficiency water reducing agent 6kg；Waste and old textile fabric 7kg；Coupling agent 1kg.
Pervious concrete the preparation method is as follows:
(1) in cement mixer, under normal temperature condition, portland cement 40kg is added, is stirred with the revolving speed of 150r/min；
(2) water 100kg, stearyl chloride 5kg, Amino-sulfonic Acid-based Water-reducer 6kg, waste and old weaving fibre are added while stirring
Dimension 7kg, coupling agent 1kg obtain pre-composition after mixing evenly；
(3) in sandstone blender, under normal temperature condition, limestone gravel 60kg, middle sand 35kg is added, with the revolving speed of 150r/min
It is stirred, obtains aggregate after mixing evenly；
(4) in concrete mixer, under normal temperature condition, pre-composition and aggregate is added, is stirred with the revolving speed of 150r/min
It mixes, is paved rapidly after mixing evenly to construction surface, form molding pervious concrete after conserving.
Embodiment 4
A kind of pervious concrete, the component including following mass fraction:
Water 90kg；Portland cement 35kg；Limestone gravel 55kg；Middle sand 33kg；Stearyl chloride 4.5kg；Sulfamate
Series high-efficiency water-reducing agent 5.5kg；Waste and old textile fabric 6kg；Coupling agent 0.8kg；Impregnating with silane agent 0.5kg；Rubber latex 10kg；Gas
Aerosil 5kg；Bamboo fibre 1kg.
Pervious concrete the preparation method is as follows:
(1) in cement mixer, under normal temperature condition, portland cement 35kg is added, is stirred with the revolving speed of 150r/min；
(2) water 90kg, stearyl chloride 4.5kg, Amino-sulfonic Acid-based Water-reducer 5.5kg, waste and old spinning are added while stirring
Textured fiber 6kg, coupling agent 0.8kg, impregnating with silane agent 0.5kg, rubber latex 10kg, fumed silica 5kg, bamboo fibre 1kg,
After mixing evenly, pre-composition is obtained；
(3) in sandstone blender, under normal temperature condition, limestone gravel 55kg, middle sand 33kg is added, with the revolving speed of 150r/min
It is stirred, obtains aggregate after mixing evenly；
(4) in concrete mixer, under normal temperature condition, pre-composition and aggregate is added, is stirred with the revolving speed of 150r/min
It mixes, is paved rapidly after mixing evenly to construction surface, form molding pervious concrete after conserving.
Embodiment 5
A kind of pervious concrete, the component including following mass fraction:
Water 90kg；Portland cement 35kg；Limestone gravel 55kg；Middle sand 33kg；Stearyl chloride 4.5kg；Sulfamate
Series high-efficiency water-reducing agent 5.5kg；Waste and old textile fabric 6kg；Coupling agent 0.8kg；Impregnating with silane agent 0.6kg；Rubber latex 11kg；Gas
Aerosil 6kg；Bamboo fibre 1.5kg.
Pervious concrete the preparation method is as follows:
(1) in cement mixer, under normal temperature condition, portland cement 35kg is added, is stirred with the revolving speed of 150r/min；
(2) water 90kg, stearyl chloride 4.5kg, Amino-sulfonic Acid-based Water-reducer 5.5kg, waste and old spinning are added while stirring
Textured fiber 6kg, coupling agent 0.8kg, impregnating with silane agent 0.6kg, rubber latex 11kg, fumed silica 6kg, bamboo fibre
1.5kg obtains pre-composition after mixing evenly；
(3) in sandstone blender, under normal temperature condition, limestone gravel 55kg, middle sand 33kg is added, with the revolving speed of 150r/min
It is stirred, obtains aggregate after mixing evenly；
(4) in concrete mixer, under normal temperature condition, pre-composition and aggregate is added, is stirred with the revolving speed of 150r/min
It mixes, is paved rapidly after mixing evenly to construction surface, form molding pervious concrete after conserving.
Embodiment 6
A kind of pervious concrete, the component including following mass fraction:
Water 90kg；Portland cement 35kg；Limestone gravel 55kg；Middle sand 33kg；Stearyl chloride 4.5kg；Sulfamate
Series high-efficiency water-reducing agent 5.5kg；Waste and old textile fabric 6kg；Coupling agent 0.8kg；Impregnating with silane agent 0.7kg；Rubber latex 12kg；Gas
Aerosil 7kg；Bamboo fibre 2kg.
Pervious concrete the preparation method is as follows:
(1) in cement mixer, under normal temperature condition, portland cement 35kg is added, is stirred with the revolving speed of 150r/min；
(2) water 90kg, stearyl chloride 4.5kg, Amino-sulfonic Acid-based Water-reducer 5.5kg, waste and old spinning are added while stirring
Textured fiber 6kg, coupling agent 0.8kg, impregnating with silane agent 0.7kg, rubber latex 12kg, fumed silica 7kg, bamboo fibre 2kg,
After mixing evenly, pre-composition is obtained；
(3) in sandstone blender, under normal temperature condition, limestone gravel 55kg, middle sand 33kg is added, with the revolving speed of 150r/min
It is stirred, obtains aggregate after mixing evenly；
(4) in concrete mixer, under normal temperature condition, pre-composition and aggregate is added, is stirred with the revolving speed of 150r/min
It mixes, is paved rapidly after mixing evenly to construction surface, form molding pervious concrete after conserving.
Comparative example 1
A kind of pervious concrete, the component including following mass fraction:
Water 90kg；Portland cement 35kg；Limestone gravel 55kg；Middle sand 33kg；Amino-sulfonic Acid-based Water-reducer
5.5kg；Coupling agent 0.8kg.
Pervious concrete the preparation method is as follows:
(1) in cement mixer, under normal temperature condition, portland cement 35kg is added, is stirred with the revolving speed of 150r/min；
(2) water 90kg, Amino-sulfonic Acid-based Water-reducer 5.5kg, coupling agent 0.8kg are added while stirring, after mixing evenly,
Obtain pre-composition；
(3) in sandstone blender, under normal temperature condition, limestone gravel 55kg, middle sand 33kg is added, with the revolving speed of 150r/min
It is stirred, obtains aggregate after mixing evenly；
(4) in concrete mixer, under normal temperature condition, pre-composition and aggregate is added, is stirred with the revolving speed of 150r/min
It mixes, is paved rapidly after mixing evenly to construction surface, form molding pervious concrete after conserving.
Comparative example 2
A kind of pervious concrete, the component including following mass fraction:
Water 90kg；Portland cement 35kg；Limestone gravel 55kg；Middle sand 33kg；Amino-sulfonic Acid-based Water-reducer
5.5kg；Waste and old textile fabric 6kg；Coupling agent 0.8kg.
Pervious concrete the preparation method is as follows:
(1) in cement mixer, under normal temperature condition, portland cement 35kg is added, is stirred with the revolving speed of 150r/min；
(2) water 90kg, Amino-sulfonic Acid-based Water-reducer 5.5kg, waste and old textile fabric 6kg, coupling agent are added while stirring
0.8kg obtains pre-composition after mixing evenly；
(3) in sandstone blender, under normal temperature condition, limestone gravel 55kg, middle sand 33kg is added, with the revolving speed of 150r/min
It is stirred, obtains aggregate after mixing evenly；
(4) in concrete mixer, under normal temperature condition, pre-composition and aggregate is added, is stirred with the revolving speed of 150r/min
It mixes, is paved rapidly after mixing evenly to construction surface, form molding pervious concrete after conserving.
Comparative example 3
A kind of pervious concrete, the component including following mass fraction:
Water 90kg；Portland cement 35kg；Limestone gravel 55kg；Middle sand 33kg；18 acyl chlorides 4.5kg, sulfamate system
High efficiency water reducing agent 5.5kg；Coupling agent 0.8kg.
Pervious concrete the preparation method is as follows:
(1) in cement mixer, under normal temperature condition, portland cement 35kg is added, is stirred with the revolving speed of 150r/min；
(2) water 90kg, 18 acyl chlorides 4.5kg, Amino-sulfonic Acid-based Water-reducer 5.5kg, coupling agent are added while stirring
0.8kg obtains pre-composition after mixing evenly；
(3) in sandstone blender, under normal temperature condition, limestone gravel 55kg, middle sand 33kg is added, with the revolving speed of 150r/min
It is stirred, obtains aggregate after mixing evenly；
(4) in concrete mixer, under normal temperature condition, pre-composition and aggregate is added, is stirred with the revolving speed of 150r/min
It mixes, is paved rapidly after mixing evenly to construction surface, form molding pervious concrete after conserving.
The detection data of each embodiment is shown in Table 1, and the detection data of each comparative example is shown in Table 2.
Experiment 1
The 28d resistance to compression of pervious concrete is detected according to GB/T50081-2002 " standard for test methods of mechanical properties of ordinary concrete "
Intensity (MPa).
Experiment 2
Pervious concrete is placed under 300 DEG C of high temperature and toasts 2h, further according to GB/T50081-2002 " normal concrete mechanical property
Test method standard " compression strength (MPa) of the detection pervious concrete after high temperature.
Table 1
Table 2
| Comparative example 1 | Comparative example 2 | Comparative example 3 | |
| 28d compression strength | 18.5 | 28.6 | 21.5 |
| High temperature compression strength | 4.6 | 10.1 | 17.5 |
It can be obtained according to the data comparison of comparative example 1 in table 2 and comparative example 2, the component in component ratio comparative example 1 in comparative example 2
Waste and old textile fabric is increased newly, the 28d compression strength in comparative example 2 is higher than comparative example 1, illustrates fine by the way that waste and old weaving is added
Dimension, waste and old textile fabric are easy to be formed a kind of unrest in pervious concrete to support system, so that the orientation of pervious concrete is answered
Power is dispersed, so that pervious concrete is not easily susceptible to cracking when being under pressure, thus be conducive to improve the toughness of pervious concrete,
So that the tensile strength and compression strength of pervious concrete enhance, it is conducive to extend the service life of pervious concrete.
It can be obtained according to the data comparison of comparative example 1 in table 2 and comparative example 3, comparative example 3 is more newly-increased than the component in comparative example 1
18 acyl chlorides, 28d compression strength a little higher than comparative example 1 in comparative example 3, and the high temperature compression strength and 28d of comparative example 3
Compression strength is not much different, and the high temperature compression strength in comparative example 1 is much smaller than 28d compression strength, illustrates by being added 18
Acyl chlorides, the acid chloride group on 18 acyl chlorides are easy to react with the amino in Amino-sulfonic Acid-based Water-reducer, generation amide groups, by
With stronger polarity and there is stronger hydrogen bond association ability, general amide groups stability all with higher in amide groups
And there is preferable high temperature resistance, to be conducive to improve the high temperature resistance of pervious concrete, so that pervious concrete
After being subjected to high temperature, compression strength is not readily susceptible to influence；Simultaneously as stearamide and Amino-sulfonic Acid-based Water-reducer
React, be conducive to it is entangled to each other to form reticular structure between molecule, thus be conducive to increase pervious concrete consistency
And viscosity reduces pervious concrete and the feelings of bleeding or isolation occurs so that aggregate is easier to be wrapped in pervious concrete
Condition, so that the density of pervious concrete is more uniform, and then is conducive to improve the compression strength of pervious concrete, so that permeable mixed
Solidifying soil is not easily susceptible to cracking when being pressurized, so that the compression strength of pervious concrete can be improved to a certain extent.
It can be obtained according to the data comparison of embodiment 1-3 in table 1 and comparative example 1-3 in table 2, the component in embodiment 1-3 was both
Waste and old textile fabric has been added also to add 18 acyl chlorides, the component in comparative example 1 is both without waste and old textile fabric or without 18 acyls
Chlorine only joined waste and old textile fabric in comparative example 2, only joined 18 acyl chlorides in comparative example 3, and comparative example 2 and comparative example 3
28d compression strength be higher than comparative example 1, and the 28d compression strength of comparative example 2 is higher than comparative example 3, the 28d of embodiment 1-3
Compression strength is above comparative example 2 and comparative example 3, illustrate by waste and old textile fabric being only added or only 18 acyl chlorides of addition are equal
The compression strength of pervious concrete can be improved, still, the improvement effect by the way that waste and old textile fabric is added can become apparent from, and individually
The effect that waste and old textile fabric is added or is individually added into 18 acyl chlorides is not so good as that waste and old textile fabric and 18 acyls are added simultaneously
Chlorine；The high temperature compression strength of comparative example 1 and comparative example 2 is far below 28d compression strength, and in embodiment 1-3 and comparative example 3
High temperature resistance to compression is not much different with 28d compression strength, illustrate mainly serve raising pervious concrete high temperature resistance at
Point be 18 acyl chlorides, mainly by react with Amino-sulfonic Acid-based Water-reducer the good amide groups of generation high temperature resistance with
It realizes.
It can be obtained according to the data comparison of embodiment 1-3 in table 1 and embodiment 4-6, group of the embodiment 4-6 than embodiment 1-3
Divide and has increased impregnating with silane agent, rubber latex, fumed silica, bamboo fibre and polyimides newly, and the 28d of embodiment 4-6
The height of compressive strength rate embodiment 1-3, and embodiment 4-6 is subjected to the change rate of the compression strength after high temperature than embodiment 1-3's
It is low, illustrate by the way that impregnating with silane agent, rubber latex, fumed silica, bamboo fibre and polyimides is added, it can be in certain journey
The compression strength and high temperature resistance of pervious concrete are improved on degree.By the way that impregnating with silane agent is added, be conducive to permeable mixed
Solidifying soil is protected, so that pervious concrete is not readily susceptible to corrode, so that it is conducive to extend the service life of pervious concrete,
So that pervious concrete is not allowed easy to aging, and then reduces pervious concrete and is easy the case where influencing its compression strength because of aging,
So that the compression strength of pervious concrete enhances；By the way that rubber latex, fumed silica is added, be conducive to enhance permeable coagulation
The toughness of soil, meanwhile, the silicone hydroxyl of silica surface is easy to be formed with silicone hydroxyl, the silane coupling agent on portland cement surface
The silicone hydroxyl and amide groups of silanol form hydrogen bond, are conducive to be cross-linked with each other between molecule to form reticular structure, so that
The compression strength and tensile strength of pervious concrete enhance；By the way that polyimides is added, be conducive to improve pervious concrete
High temperature resistance so that the high temperature compression strength of pervious concrete is not much different with 28d compression strength.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (8)
1. a kind of pervious concrete, it is characterized in that: including the component of following mass fraction:
80-100 parts of water；
30-40 parts of portland cement；
50-60 parts of limestone gravel；
Middle sand 30-35 parts；
4-5 parts of stearyl chloride；
5-6 parts of Amino-sulfonic Acid-based Water-reducer；
Waste and old textile fabric 5-7 parts；
0.5-1 parts of coupling agent.
2. pervious concrete according to claim 1, it is characterized in that: the coupling agent is silane coupling agent.
3. pervious concrete according to claim 1 to 2, it is characterized in that: further including the component of following mass fraction:
0.5-0.7 parts of impregnating with silane agent.
4. pervious concrete according to claim 1 to 2, it is characterized in that: further including the component of following mass fraction:
10-12 parts of rubber latex.
5. pervious concrete according to claim 4, it is characterized in that: the rubber is silicon rubber.
6. pervious concrete according to claim 1 to 2, it is characterized in that: further including the component of following mass fraction:
5-7 parts of fumed silica.
7. pervious concrete according to claim 1 to 2, it is characterized in that: further including the component of following mass fraction:
1-2 parts of bamboo fibre.
8. pervious concrete according to claim 1 to 2, it is characterized in that: further including the component of following mass fraction:
3-4 parts of polyimides.
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| CN113321452A (en) * | 2021-05-26 | 2021-08-31 | 佛山市高明明建混凝土配送有限公司 | Fiber-toughened concrete and preparation method thereof |
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