Fly ash and building waste water permeable brick and preparation method thereof

A technology for construction waste and fly ash is applied in the field of fly ash construction waste permeable bricks and their preparation, which can solve the problems of high production cost of ecological ceramic permeable bricks, consumption of construction waste, aggravation of the greenhouse effect, etc. The effect of high solid waste utilization rate and simple process

Inactive Publication Date: 2016-11-23
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 fly ash construction waste permeable brick is composed of the following materials in parts by weight: 100 parts of fly ash, 500 parts of construction waste, 5 parts of silica fume, 4 parts of alkaline activator and 25 parts of water. The specific surface area of ​​the fly ash is ≥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 fly ash 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 the partic...

Embodiment 2

[0028] A fly ash construction waste permeable brick is composed of the following materials in parts by weight: 100 parts of fly ash, 200 parts of construction waste, 2 parts of silica fume, 1.5 parts of alkaline activator and 18 parts of water. The specific surface area of ​​the fly ash is ≥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 fly ash 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 until the part...

Embodiment 3

[0036] A fly ash construction waste permeable brick is composed of the following materials in parts by weight: 100 parts of fly ash, 800 parts of construction waste, 8 parts of silica fume, 6.5 parts of alkaline activator and 36 parts of water. The specific surface area of ​​the fly ash is ≥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 fly ash 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 the part...

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Abstract

The invention discloses a fly ash and building waste water permeable brick and a preparation method thereof, and belongs to the technical field of building materials. The fly ash and building waste water permeable brick is prepared from, by weight, 100 parts of fly ash, 200-800 parts of building waste, 2-8 parts of silica fume, 1.5-6.5 parts of alkali-activator and 18-36 parts of water. According to the fly ash and building waste water permeable brick and the preparation method thereof, industrial waste residues and building waste are adopted as the raw materials, the solid waste utilization rate is high, and the production cost is low; the molding method adopts compression molding and is simple in technology, free of high-temperature calcination, low in carbon, environmentally friendly and low in energy consumption; a cementing material is an alkali-activator powder coal ash cementing material, and the water permeable brick prepared through the alkali-activator powder coal ash cementing material has the advantages of being high in strength, high in water permeability, low in hydration heat, resistant to carbonization, 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 fly ash 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 com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B30/00
CPCC04B30/00C04B2111/00284C04B2201/50C04B18/08C04B18/167C04B18/146C04B22/064C04B22/08C04B22/10C04B18/24
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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