Concrete brick with high water permeability

A technology of permeable concrete and metakaolin, applied in the field of concrete, can solve the problems of unsatisfactory strength and water permeability, limited application of permeable concrete bricks, poor water permeability, etc., to improve the compressive strength and resistance to chloride ion penetration, The effect of preventing the decrease of the water permeability coefficient and porosity and improving the water permeability

Inactive Publication Date: 2017-05-17
安徽城洁环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength and water permeability of the existing concrete are still not ideal, and the concrete bricks made of it have

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0013] Example 1

[0014] The high-permeability concrete brick proposed by the present invention comprises by weight: 120 parts of cement, 300 parts of crushed stone, 35 parts of phosphogypsum, 10 parts of slag, 50 parts of steel slag, 200 parts of river sand and 50 parts of fly ash , 5 parts of silica fume, 35 parts of sintered magnesia, 2 parts of metakaolin, 40 parts of mixed fiber, 5 parts of straw powder, 8 parts of water reducing agent, 0.1 part of sodium ethylenediaminetetramethylene phosphonate, and 50 parts of water.

Example Embodiment

[0015] Example 2

[0016] The high-permeability concrete brick proposed by the present invention comprises by weight: 200 parts of cement, 250 parts of crushed stone, 10 parts of phosphogypsum, 50 parts of slag, 10 parts of steel slag, 350 parts of river sand and 20 parts of fly ash , 20 parts of silica fume, 10 parts of sintered magnesia, 15 parts of metakaolin, 10 parts of mixed fibers, 38 parts of straw powder, 3 parts of water reducing agent, 0.5 parts of sodium ethylenediaminetetramethylene phosphonate, and 20 parts of water;

[0017] Wherein, the water reducing agent is prepared according to the following process: adding hydroxyethylidene diphosphonic acid into chloroform, stirring uniformly, adding triethylamine and methacryloyl chloride, heating up to 85°C and stirring for 8 hours, and after the reaction is completed, the obtained Material A; add isopentenol polyoxyethylene ether into water, stir evenly, then heat up to 65°C, then add acrylic acid, material A, ascorbic...

Example Embodiment

[0018] Example 3

[0019] The high-permeability concrete brick proposed by the present invention includes by weight: 180 parts of cement, 265 parts of crushed stone, 19 parts of phosphogypsum, 32 parts of slag, 21 parts of steel slag, 260 parts of river sand, and 31 parts of fly ash , 18 parts of silica fume, 18 parts of sintered magnesia, 10 parts of metakaolin, 21 parts of mixed fibers, 26 parts of straw powder, 4.9 parts of water reducing agent, 0.4 parts of sodium ethylenediaminetetramethylene phosphonate, and 30 parts of water;

[0020] Wherein, the apparent density of the crushed stone is 2.5g / cm 3 , the bulk density is 1.5g / cm 3 , the mud content is 0.35%, and the porosity is 35%;

[0021] The mixed fiber is a mixture of basalt fiber, steel fiber, polyvinyl alcohol fiber, and glass fiber in a weight ratio of 2:8:3:15;

[0022] The water reducing agent is prepared according to the following process: adding hydroxyethylidene diphosphonic acid into chloroform, stirring ...

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PUM

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Abstract

The invention discloses a concrete brick with high water permeability. The concrete brick is prepared from raw materials in parts by weight as follows: 120-200 parts of cement, 250-300 parts of gravel, 10-35 parts of ardealite, 10-50 parts of slag, 10-50 parts of steel slag, 200-350 parts of river sand, 20-50 parts of fly ash, 5-20 parts of silica fume, 10-35 parts of sintered magnesia, 2-15 parts of metakaolin, 10-40 parts of mixed fiber, 5-38 parts of straw powder, 3-8 parts of a water reducer, 0.1-0.5 parts of ethylene diamine tetra (methylene phosphonic acid) sodium and 20-50 parts of water. The concrete brick with high water permeability has very high compressive strength and excellent water permeability and can meet the use requirement of multiple fields.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a highly permeable concrete brick. Background technique [0002] Permeable concrete is usually also called porous concrete. It is a porous material that has both a certain material strength and a certain degree of water permeability and air permeability. From its own performance, in addition to effectively relieving surface water, it is also effective in rainwater. It has obvious effects in terms of purification and reduction of road noise. Permeable concrete generally has the following advantages: sound absorption and noise reduction, protection of groundwater, improvement of thermal environment, improvement of surface soil ecological environment, etc. However, the strength and water permeability of existing concrete are still not ideal, and the concrete bricks made of it have the defects of poor strength and poor water permeability, which limit the application of permeable co...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B38/00C04B24/28C08F283/06C08F230/02C08F220/06C08F220/46C08F222/40C04B103/30
CPCC04B24/246C04B28/00C04B2103/302C04B2111/00284C08F283/065C04B14/02C04B22/144C04B18/141C04B18/142C04B14/068C04B18/08C04B18/146C04B14/304C04B14/106C04B18/24C04B14/48C04B16/0641C04B14/42C04B14/4656C04B24/003C04B38/00C08F222/406
Inventor 薛念念汤俊怀李青松王军
Owner 安徽城洁环境科技有限公司
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