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Water-permeable bricks prepared from coal gangues and construction waste and preparation method thereof

A technology of construction waste and coal gangue, which is applied to ceramic products, other household appliances, sustainable waste treatment, etc., can solve the problems of high production cost of ecological ceramic permeable bricks, consumption of construction waste, and intensified greenhouse effect, etc., to achieve low production cost , High utilization rate of solid waste and simple process

Inactive Publication Date: 2017-01-04
ZHUODA NEW MATERIALS TECH GRP WEIHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production cost of ecological ceramic permeable bricks prepared by this method is high; ecological ceramic permeable bricks are calcined at high temperature, which consumes construction waste while increasing energy consumption, aggravating the greenhouse effect, and causing certain harm to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A coal gangue construction waste permeable brick is composed of the following materials in parts by weight: 100 parts of coal gangue, 600 parts of construction waste, 6 parts of silica fume, 5 parts of alkaline activator and 30 parts of water. The specific surface area of ​​the gangue ≥ 350cm 2 / g. The alkaline activator is prepared by mixing lime, sodium silicate and sodium carbonate in a mass ratio of 1:1:1. The construction waste is made by mixing waste concrete, waste bricks, waste marble and waste mortar in a mass ratio of 1:1:1:1. The construction waste comprises the following components by weight percentage: 20% of 0.15mm-0.60mm construction waste, 20% of 0.60mm-4.75mm construction waste, and 60% of 4.75mm-8mm construction waste.

[0021] The preparation method of the above-mentioned coal gangue construction waste permeable brick is carried out according to the following steps:

[0022] (1) The construction waste is crushed by a large hammer or crusher until t...

Embodiment 2

[0028] A coal gangue construction waste permeable brick is composed of the following materials in parts by weight: 100 parts of coal gangue, 200 parts of construction waste, 5 parts of silica fume, 1.8 parts of alkaline activator, and 18 parts of water. The specific surface area of ​​the gangue ≥ 350cm 2 / g. The alkaline activator is prepared by mixing lime, sodium silicate and sodium carbonate in a mass ratio of 1:1:1. The construction waste is made by mixing waste concrete, waste bricks, waste marble and waste mortar in a mass ratio of 1:1:1:1. The construction waste comprises the following components by weight percentage: 25% of 0.15mm-0.60mm construction waste, 25% of 0.60mm-4.75mm construction waste, and 50% of 4.75mm-8mm construction waste.

[0029] The preparation method of the above-mentioned coal gangue construction waste permeable brick is carried out according to the following steps:

[0030] (1) The construction waste is crushed by a large hammer or crusher unti...

Embodiment 3

[0036] A coal gangue construction waste permeable brick is composed of the following materials in parts by weight: 100 parts of coal gangue, 800 parts of construction waste, 10 parts of silica fume, 7 parts of alkaline activator and 36 parts of water. The specific surface area of ​​the gangue ≥ 350cm 2 / g. The alkaline activator is prepared by mixing lime, sodium silicate and sodium carbonate in a mass ratio of 1:1:1. The construction waste is made by mixing waste concrete, waste bricks, waste marble and waste mortar in a mass ratio of 1:1:1:1. The construction waste comprises the following components by weight percentage: 10% of 0.15mm-0.60mm construction waste, 35% of 0.60mm-4.75mm construction waste, and 55% of 4.75mm-8mm construction waste.

[0037] The preparation method of the above-mentioned coal gangue construction waste permeable brick is carried out according to the following steps:

[0038] (1) The construction waste is crushed by a large hammer or crusher until ...

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Abstract

The invention discloses water-permeable bricks prepared from coal gangues and construction waste and a preparation method thereof and belongs to the technical field of building materials. The water-permeable bricks are prepared from, by weight, 100 parts of coal gangues, 200-800 parts of construction waste, 5-10 parts of silica fume, 1.8-7 parts of alkaline excitant and 18-36 parts of water. The raw materials are industrial waste and construction waste, the solid waste utilization rate is high, and the production cost is low. The water-permeable bricks are formed through pressing and are low in carbon, environmentally friendly and low in energy consumption, the process is simple, and high temperature calcination is not needed. A cementing material is an alkali-activated coal gangue cementing material, so that the water-permeable bricks prepared adopting the cementing material have the advantages of being high in strength, high in water permeability, low in hydration heat, resistant to carbonation, good in durability and the like.

Description

technical field [0001] The invention belongs to the technical field of building material preparation, and in particular relates to a coal gangue construction waste permeable brick and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy and the vigorous development of urbanization, the original green space was replaced by large-scale ground pavement, and the formed "urban desert" greatly increased the impermeable area, making it impossible for urban rainwater to return to nature. As a result, urban The groundwater is greatly reduced, and there is a danger of urban buildings sinking; and when the city encounters a sudden heavy rain, the rainwater on the road surface cannot leak quickly, causing a great burden on urban drainage facilities and easily causing urban waterlogging. At the same time, its large area of ​​paved road weakens the breathing function of the city, which will cause the "heat island effect", reduce the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B38/00C04B18/12C04B22/06C04B22/08C04B22/10
CPCC04B28/00C04B2111/00284C04B2201/50C04B18/12C04B18/16C04B18/146C04B22/064C04B22/08C04B22/10C04B38/00Y02W30/91
Inventor 杨卓舒张军华段晓马春羽史红彬蔡世楷
Owner ZHUODA NEW MATERIALS TECH GRP WEIHAI CO LTD
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