A kind of permeable compressive concrete and preparation method thereof

A concrete and cement technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problem of affecting the water permeability of permeable concrete, poor structural strength of sand-free porous permeable concrete, and reducing the effective void ratio of aggregate To improve the compactness, ensure the water permeability and improve the structural strength

Active Publication Date: 2022-05-17
湖北云海混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that river sand is added to the above-mentioned pervious concrete to fill in the voids of the aggregate, thereby improving the defect of poor structural strength of sand-free porous permeable concrete, but the filling of river sand will be reduced. The effective porosity of the aggregate affects the water permeability of the pervious concrete

Method used

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  • A kind of permeable compressive concrete and preparation method thereof
  • A kind of permeable compressive concrete and preparation method thereof
  • A kind of permeable compressive concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of permeable compression concrete, its component content is as shown in table 1:

[0035] Table 1

[0036]

[0037] Among them, the crushed stone has a particle size of 25mm, the fineness modulus of fine sand coated with an active calcium oxide layer is 1.5, the cement is sulphoaluminate cement, and the water reducer is polycarboxylate water reducer;

[0038] The coating method of the active calcium oxide layer is as follows: 1) at room temperature, the titanate is completely dissolved in isopropanol to obtain a titanate isopropanol solution, and the molar ratio of titanate to isopropanol is 1: 5; 2) Take activated calcium oxide and place it in the solution, stir to obtain a suspension, the molar ratio of activated calcium oxide to titanate is 0.5:1; 3) Re-stir the suspension to make the activated calcium oxide evenly dispersed , to obtain the dispersion; 4) While performing ball milling on the fine sand, spray the dispersion on the surface of the fine sand i...

Embodiment 2

[0044] A large amount of fly ash concrete, its component content is shown in Table 1;

[0045] Among them, the crushed stone has a particle size of 25mm, the fineness modulus of fine sand coated with an active calcium oxide layer is 1.5, the cement is sulphoaluminate cement, and the water reducer is polycarboxylate water reducer;

[0046] The coating method of the active calcium oxide layer is as follows: 1) at room temperature, the titanate is completely dissolved in isopropanol to obtain a titanate isopropanol solution, and the molar ratio of titanate to isopropanol is 1.25: 5; 2) Put the activated calcium oxide in the solution and stir to obtain a suspension, the molar ratio of activated calcium oxide to titanate is 0.6:1; 3) Re-stir the suspension to make the activated calcium oxide evenly dispersed , to obtain the dispersion; 4) while carrying out ball milling treatment on the fine sand, the dispersion liquid is sprayed on the surface of the fine sand in a mist spray mode...

Embodiment 3

[0052] A large amount of fly ash concrete, its component content is shown in Table 1;

[0053] Among them, the crushed stone has a particle size of 25mm, the fineness modulus of fine sand coated with an active calcium oxide layer is 1.5, the cement is sulphoaluminate cement, and the water reducer is polycarboxylate water reducer;

[0054] The coating method of the active calcium oxide layer is as follows: 1) at room temperature, the titanate is completely dissolved in isopropanol to obtain a titanate isopropanol solution, and the molar ratio of titanate to isopropanol is 1.5: 5; 2) Put the activated calcium oxide in the solution and stir to obtain a suspension, the molar ratio of activated calcium oxide to titanate is 0.75:1; 3) Re-stir the suspension to make the activated calcium oxide evenly dispersed , to obtain a dispersion; 4) while carrying out ball milling treatment on the fine sand, spray the dispersion on the surface of the fine sand in a mist spray mode, the spray pr...

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Abstract

The application relates to the technical field of building materials, and specifically discloses a permeable compression-resistant concrete and a preparation method thereof. The permeable and compressive concrete is made of the following raw materials in parts by weight: 1100-1400 parts of gravel, 150-250 parts of fine sand coated with an active calcium oxide layer on the surface, 150-220 parts of cement, 120-200 parts of water, coal 25-65 parts of ash, 2-5 parts of water-reducing agent; the preparation method is: under normal temperature, weigh gravel, fine sand, cement, water, coal ash, and water-reducing agent in parts by weight; Mix stone, cement and coal ash evenly to make a mixture; then add water to the mixture, stir for 5 to 10 minutes, then add fine sand, continue stirring for 3 to 5 minutes, add water reducer, and mix evenly to obtain a finished permeable concrete product. The permeable compressive concrete of the present application has the effect of improving the defect of its low compressive strength.

Description

technical field [0001] The application relates to the technical field of building materials, more specifically, it relates to a water-permeable compression-resistant concrete and a preparation method thereof. Background technique [0002] The current permeable concrete is mainly sand-free porous permeable concrete. The surface of the gravel in the porous permeable concrete is coated with a thin layer of cement paste bonded to the gravel, thereby forming a honeycomb structure with uniform distribution of pores, so it has air permeability, Capillarity is not obvious, the amount of cement is small, and the construction is simple. It is generally used in the field of road slope protection and permeable bricks. [0003] The related technology is CN110357500A Chinese invention patent discloses a kind of permeable concrete, its raw materials include the following components in parts by weight: 10-13 parts of cement; 19-24 parts of river sand; 47-53 parts of aggregate; 0.19-0.23 pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06C04B111/27
CPCC04B28/06C04B2201/50C04B2111/27C04B14/02C04B14/06C04B18/08C04B2103/302Y02W30/91
Inventor 李海斌熊还超张朋詹赡陈亮
Owner 湖北云海混凝土有限公司
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