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Fired water-permeable paving brick based on used sodium silicate sand and preparation method of paving brick

A technology of water glass and pavement bricks, which is applied in the field of water glass old sand-based permeable sintered pavement bricks and its preparation, which can solve the problems of air heat and humidity exchange, urban groundwater level drop, waste of limited resources, etc., and reduce firing temperature, lower eutectic temperature, and lower energy consumption

Active Publication Date: 2014-12-24
HENAN UNIV OF URBAN CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, a series of environmental problems have arisen: the rainwater that can infiltrate the surface has decreased significantly, and the underground water table in the city has dropped sharply; Rainwater cannot seep into the ground in time, which may easily cause social problems such as flooded roads and traffic paralysis
In addition, there is a relative shortage of high-quality quartz sand resources in my country. If the old water glass sand is not comprehensively utilized and discarded in large quantities, it will be a great waste of limited resources and cause serious environmental pollution.

Method used

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  • Fired water-permeable paving brick based on used sodium silicate sand and preparation method of paving brick

Examples

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Comparison scheme
Effect test

Embodiment 1

[0030] A water-glass old sand-based permeable sintered pavement brick. The raw material composition and proportion of the permeable pavement brick: water glass old sand is primary used sand, and the dominant mineral of clay is kaolinite. The proportion is: water glass old sand 892.5 g, coal gangue 52.5g, clay 31.5g, water glass 21g, glass powder 31.5g, water 21g.

[0031] The preparation method of the above-mentioned water glass old sand-based permeable sintered pavement brick comprises the following steps:

[0032] (1) Pulverization: Put the old water glass sand and coal gangue into a pulverizer to crush them into fine aggregates. The fineness modulus of the old water glass sand after crushing is 2.0, and the particle size of the coal gangue after crushing is 0.15mm~0.6mm;

[0033] (2) Mixing: Fully mix the above-mentioned raw materials except water glass and water according to the ratio, stir evenly, add water glass and water for wet mixing, and age the evenly mixed ingredie...

Embodiment 2

[0038] A water-glass old sand-based permeable sintered pavement brick, the raw material composition and proportion of the water-permeable pavement brick: water glass old sand is quaternary old sand, the dominant mineral of clay is montmorillonite, and the proportion is: water glass old sand 525g, coal gangue 157.5g, clay 157.5g, water glass 31.5g, glass powder 157.5g, water 21g.

[0039] The preparation method of the above-mentioned water glass old sand-based permeable sintered pavement brick comprises the following steps:

[0040] (1) Pulverization: Put the old water glass sand and coal gangue into a pulverizer to crush them into fine aggregates. The fineness modulus of the old water glass sand after crushing is 2.5, and the particle size of the coal gangue after crushing is 0.15mm~0.6mm;

[0041] (2) Mixing: Fully mix the above-mentioned raw materials except water glass and water according to the ratio, stir evenly, add water glass and water for wet mixing, and age the evenl...

Embodiment 3

[0046] A water-glass old sand-based permeable sintered pavement brick. The raw material composition and proportion of the permeable pavement brick: water glass old sand is tertiary old sand, and the dominant mineral of clay is kaolinite. The proportion is: water glass old sand 682.5 g, coal gangue 210g, clay 42g, water glass 52.5g, glass powder 42g, water 21g.

[0047] The preparation method of the above-mentioned water glass old sand-based permeable sintered pavement brick comprises the following steps:

[0048] (1) Pulverization: Put the old water glass sand and coal gangue into a pulverizer to crush them into fine aggregates. The fineness modulus of the old water glass sand after crushing is 2.3, and the particle size of the coal gangue after crushing is 0.15mm~0.6mm;

[0049] (2) Mixing: Fully mix the above-mentioned raw materials except water glass and water according to the ratio, stir evenly, add water glass and water for wet mixing, and age the evenly mixed ingredients...

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Abstract

The invention discloses a fired water-permeable paving brick based on used sodium silicate sand and a preparation method of the paving brick and belongs to the technical field of comprehensive utilization of industrial solid waste and road building materials. The fired water-permeable paving brick based on the used sodium silicate sand is prepared from 100 parts of raw materials in total as follows: 50-85 parts of industrial solid waste, that is, the used sodium silicate sand, produced in the casting industry, 5-20 parts of coal gangue, 3-15 parts of clay, 2-5 parts of sodium silicate, 3-15 parts of glass powder and the balance of water. The fired water-permeable paving brick based on the used sodium silicate sand has the characteristics as follows: (1) problems that a large amount of used sodium silicate sand produced in the casting industry is stacked and causes pollution to the ecological environment is solved; (2) the firing temperature of the fired water-permeable paving brick based on the used sodium silicate sand can be reduced to 1000 DEG C-1150 DEG C, and the energy consumption is reduced; (3) silica sand resources can be saved, the paving brick conforms to industrial policies of the nation in energy conservation, emission reduction and environmental protection and is convenient to popularize and apply.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of industrial solid waste and road building materials, and in particular relates to a water-glass old sand-based water-permeable sintered pavement brick and a preparation method thereof. Background technique [0002] With the development of economy and the process of urbanization, the surface of modern cities is gradually covered by reinforced concrete buildings and impermeable roads. But these impermeable roads have brought many negative impacts to the ecological environment of the city. Concrete pavements lack the ability to absorb heat and infiltrate rainwater compared to natural soil. As a result, a series of environmental problems have arisen: the rainwater that can infiltrate the surface has decreased significantly, and the underground water table in the city has dropped sharply; Rainwater cannot seep into the ground in time, which can easily cause social problems such as...

Claims

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Application Information

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IPC IPC(8): C04B38/00
Inventor 王继娜徐开东李彦彦汪潇牛季收朱凯
Owner HENAN UNIV OF URBAN CONSTR
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