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Geopolymer pervious concrete and preparation method thereof

A technology of permeable concrete and geopolymer, applied in ceramic products, cement production, other household appliances, etc., can solve the problems of easy cracking, poor water permeability, threshing and slag removal of permeable concrete, and achieve the improvement of strength and permeability coefficient, and easy aging , the effect of poor weather resistance

Active Publication Date: 2021-10-08
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the deficiencies in the prior art, provide a kind of geopolymer permeable concrete and its preparation method, in order to improve the strength of geopolymer permeable concrete and reduce its preparation cost, solve the problem of permeable concrete cracking easily, threshing and slag dropping, Poor durability, poor water permeability, etc.

Method used

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  • Geopolymer pervious concrete and preparation method thereof
  • Geopolymer pervious concrete and preparation method thereof
  • Geopolymer pervious concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation process of the geopolymer gelling material is as follows: according to the water-binder ratio of 0.26 (water-binder ratio: the ratio of the sum of the water content in the added water and the water glass to the mass of the gelling material, wherein the water content of the water glass is 56.26wt%), The excitation-solid ratio is 1 and the modulus of water glass is 1.4, and the cementitious material is equipped with 50.00g copper slag (accounting for 30% of the mass of the solid powder material), 116.67g of metakaolin (accounting for 70% of the solid powder material) , 166.67g of activator (150.45g of water glass and 16.22g of NaOH) and 5g of water were poured into a planetary cement mortar mixer, and stirred at room temperature (140r / min) for 150s to obtain a cementitious material.

[0033] When the amount of copper slag is 0, 20%, 40%, and 50%, the amount of copper slag is 0g, 33.33g, 66.67g, 83.34g, and the amount of metakaolin in the powder material is ...

Embodiment 2

[0037] The preparation process of geopolymer permeable concrete: according to the water-binder ratio of 0.26 (the ratio of the sum of the water content in the added water and water glass to the mass of the colloidal material, in which the water content of water glass is 56.26wt%), the shock-solid ratio is 1, The water glass modulus is 1.4, and the cementitious material is equipped; according to the bone-to-cement ratio of 6:1, 190.00g of copper slag (accounting for 30% of the mass of the powder material), 443.33g of metakaolin (accounting for the mass of the powder material) 70% of ), 3086g of coarse aggregate and 4629g of fine aggregate were poured into the self-consolidating concrete mixer, and stirred for 90s at room temperature (rotation speed 45r / min), in which the aggregate particle size was 4.75mm~9.50mm and 2.36mm~4.75 The mass ratio of mm is 2:3; finally, pour 633.33g of activator (571.70g of water glass and 61.63g of NaOH) and 19.0g of added water into the well-stirre...

Embodiment 3

[0041] The preparation process of the geopolymer gelling material is as follows: according to the water-binder ratio of 0.26 (the ratio of the sum of the water content in the added water and the water glass to the mass of the colloidal material, wherein the water content of the water glass is 56.26wt%), the shock-solid ratio is 1 The modulus of water glass is 1.4, and the cementitious material is equipped; 18.50g copper slag (accounting for 30% of the mass of the powder material), 43.17g metakaolin (accounting for 70% of the mass of the powder material), and 61.67g of the activator (55.67g water glass and 6.00g NaOH), 0.75g water were poured into a planetary cement mortar mixer, and stirred at room temperature for 150s (speed 140r / min) to obtain a cementitious material. When the amount of copper slag is 0, 20%, 40%, and 50%, the amount of copper slag is: 0g, 12.33g, 24.67g, and 30.84g; the amount of metakaolin in the powder material is: 61.67g, 49.33 g, 37.00g, 30.83g. When t...

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Abstract

The invention discloses geopolymer pervious concrete and a preparation method thereof. The preparation method comprises the following steps: uniformly stirring copper smelting slag, metakaolin, an exciting agent, water and aggregate according to a certain mixing ratio, injecting the formed mixture into a mold for curing and molding, and preserving moisture at 30 DEG C for 28 days so as to prepare the high-performance environment-friendly geopolymer pervious concrete. The obtained pervious concrete material has very high breaking strength and compressive strength.

Description

technical field [0001] The invention belongs to the technical field of forming permeable pavement materials, and in particular relates to geopolymer (geopolymer for short) permeable concrete cementitious material, proportioning research and preparation method thereof. Background technique [0002] In recent years, with the increase of impermeable pavements in cities, the internal water storage capacity of cities is poor, and most of the natural precipitation is discharged from underground pipes, which have long drainage paths, resulting in frequent flood disasters. Urban waterlogging causes surface pollutants to directly enter the surrounding natural water bodies, thereby affecting the growth of plants in the city and destroying the ecological balance; road surface water will cause "water drift" and other hazards during driving; impermeable roads will cause groundwater levels to be unable to be obtained. In addition, land subsidence occurs; impermeable pavement prevents the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B38/00C04B111/40
CPCC04B28/006C04B2201/50C04B2111/40C04B2111/00284C04B22/00C04B18/0472C04B14/106C04B22/062C04B14/14C04B38/0041Y02P40/10
Inventor 邱仁辉潘杰付腾飞刘文地罗晨辉吴淑一於德美徐建刚黄斐孙琳莉潘洁
Owner FUJIAN AGRI & FORESTRY UNIV
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