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Water purification type solid waste pervious concrete

A permeable concrete and water purification technology, applied in the field of building materials manufacturing, can solve problems affecting groundwater quality, destroying surface structures and surrounding environments, consuming natural resources, manpower and material resources, etc., achieving significant water purification characteristics, reducing mining and environmental pollution , Realize the effect of resource utilization

Pending Publication Date: 2021-03-12
RES INST OF HIGHWAY MINIST OF TRANSPORT +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, most of the coarse aggregate of permeable concrete comes from the mining of natural sand and gravel plants, which greatly consumes natural resources, manpower and material resources, and at the same time destroys the surface structure and surrounding environment
[0005] In addition, because the rainwater contains a certain amount of heavy metal ions, N, P and other pollutants, if it is not treated and directly enters the groundwater system, it will seriously affect the quality of groundwater.

Method used

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  • Water purification type solid waste pervious concrete

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Choose S95 grade slag powder from Wuhan Ganghua Cement Plant, and the dosage is 300kg / m 3 ;Choose highly alkaline red mud from the red mud yard of Jianfeng Aluminum Industry in Yangquan, Shanxi, with a dosage of 60kg / m 3 The alkali activator selects the mixed solution of sodium hydroxide and sodium silicate for use, and the modulus M (SiO 2 / Na 2 O) is 1, and the consumption of alkali activator is 70kg / m 3 , the amount of water used must be miscible with the alkali activator at a water-cement ratio of 0.23; single-grain steel slag with a size of 4.75-9.5mm is selected from the aged and pre-wet steel slag as coarse aggregate, and the dosage is 1600kg / m 3 . According to the preparation method of conventional permeable concrete, the above materials are mixed with a concrete mixer for 60 seconds, then molded in three layers, and formed by pressing up and vibrating down. The size of the test mold is 100*100*100mm. After curing for 28 days, the product was obtained, and...

Embodiment 2

[0032] Select grade Ⅱ fly ash of Wuhan Yangluo Power Plant, the dosage is 340kg / m 3 ;Choose highly alkaline red mud from the red mud yard of Shanxi Yangquan Jianfeng Aluminum Industry, and the dosage is 70kg / m 3 The alkali activator selects sodium hydroxide and sodium silicate mixed solution for use, and the modulus M (SiO 2 / Na 2 O) is 0.8, the amount of alkali activator is 75kg / m 3 , the amount of water is guaranteed to be miscible with the alkali activator at a water-cement ratio of 0.21; single-grain steel slag with a size of 4.75-9.5mm is selected from the aged and pre-wet steel slag as coarse aggregate, and the dosage is 1650kg / m 3. According to the preparation method of conventional permeable concrete, the above materials are mixed with a concrete mixer for 60 seconds, then molded in three layers, and formed by pressing up and vibrating down. The size of the test mold is 100*100*100mm. The product was obtained after curing for 28 days, and its water permeability coe...

Embodiment 3

[0034] Select S95 grade slag powder from Datang Shandong Power Generation Co., Ltd., and the dosage is 320kg / m 3 ; Choose highly alkaline red mud from Jiangxi Hongcheng Aluminum Co., Ltd., with a dosage of 80kg / m 3 The alkali activator selects sodium hydroxide and sodium silicate mixed solution for use, and the modulus M (SiO 2 / Na 2 O) is 1, and the consumption of alkali activator is 80kg / m 3 , the amount of water is guaranteed to be miscible with the alkali activator at a water-cement ratio of 0.23; single-grained steel slag with a size of 9.5-13.2mm is selected from the aged and pre-wetted steel slag as coarse aggregate, and the dosage is 1600kg / m 3 . According to the preparation method of conventional permeable concrete, the above materials are mixed with a concrete mixer for 60 seconds, then molded in three layers, and formed by pressing up and vibrating down. The size of the test mold is 100*100*100mm. After curing for 28 days, the product was obtained, and its water...

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Abstract

The invention provides water purification type solid waste pervious concrete, wherein the cementing material of the pervious concrete is a geopolymer and is prepared by mixing a solid waste material mainly containing silicon and aluminum, high-alkalinity red mud and a small amount of an alkali activator. The pervious concrete disclosed by the invention overcomes the defects of high production energy consumption and large environmental pollution of traditional pervious concrete, has the advantages of consuming a large amount of solid wastes, reducing exploitation of natural resources, reducingthe cost and the like, and also has the functions of purifying water and effectively protecting underground water resources.

Description

technical field [0001] The present invention generally belongs to the technical field of building material manufacturing, and in particular relates to a water-purifying solid waste permeable concrete made of solid waste materials and the use of the water-purifying solid waste permeable concrete in the manufacture of building materials and environmentally friendly water purification materials the use of. Background technique [0002] Permeable concrete is a kind of porous concrete that is mainly composed of coarse aggregate, cementitious material, water and admixtures and other materials through a specific mixing method. It does not contain fine aggregates, and is mainly formed by wrapping coarse aggregates with cementitious materials and bonding them to each other. Therefore, there are certain interconnected voids inside, and it is a porous structure that is breathable and water-permeable. Permeable concrete, as the main material for the pavement of "sponge city", has the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B12/00
CPCC04B28/006C04B12/005C04B2201/50C04B2111/00284C04B18/142Y02P40/10
Inventor 王稷良于咏妍张党正王纬东路竣杰陈志忠徐军宝群群宋幸芳何永刘英杜天玲
Owner RES INST OF HIGHWAY MINIST OF TRANSPORT
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