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Preparation method of steel slag pavement brick with net hole structure and water penetrating function

A technology of permeable pavement bricks and pore structure, which is applied to pavements, roads, roads and other directions paved with prefabricated blocks, can solve the problems of management costs, environmental pollution, occupation of land, etc., to protect the environment, reduce production costs, save money energy effect

Inactive Publication Date: 2005-11-09
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the storage of a large amount of steel slag occupies a large amount of land, consumes a lot of management costs and causes certain environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Screen out steel slag particles with a particle size of 5 to 10 mm, and make steel slag pavement permeable bricks according to the ingredient ratio in Table 1. The specific production steps are as follows:

[0019] (1) Use sieves with apertures of 10mm and 2.5mm in advance to select steel slag particles with a particle size of 2.5-10mm. Weigh the raw materials of the bottom layer and the upper layer respectively in proportion.

[0020] (2) Put the bottom part of the raw material into the mixing container, and first mix the dry powder raw material and steel slag particles evenly. Pour in a certain amount of water and continue to stir evenly to make the dry powder, steel slag particles and water evenly mixed. The stirring speed and strength of this step are basically close to the situation of the mixer when making the cement glue sand test block, and the stirring time after adding the solution is kept at 1.5 to 2 minutes.

[0021] (3) 35-70 seconds after the ...

Embodiment 2

[0026] 2. Example 2: Screen out steel slag particles with a particle size of 2.5 to 10 mm, and make steel slag pavement permeable bricks according to the ingredient ratio in Table 3. The specific production steps are as follows:

[0027] (1) Use sieves with apertures of 10mm and 2.5mm in advance to select steel slag particles with a particle size of 2.5-10mm. Weigh the raw materials of the bottom layer and the upper layer respectively in proportion.

[0028] (2) Put the bottom part of the raw material into the mixing container, and first mix the dry powder raw material and steel slag particles evenly. Pour in a certain amount of water and continue to stir evenly to make the dry powder, steel slag particles and water evenly mixed. The stirring speed and strength of this step are basically close to the situation of the mixer when making the cement glue sand test block, and the stirring time after adding the solution is kept at 1.5 to 2 minutes.

[0029] (3) 35-70 seconds after...

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Abstract

The present invention relates to the field of building material, in particular permeable pavement bricks made of steel slag having meshed porous structure, characterized in that steel slag is added into the pavement bricks, wherein the permeable steel slag bricks consists a upper layer and a lower layer, the grain diameter of the steel slag particles being 2.5-10mm, the compositions of the lower layer of the raw material are, steel slag particles 75-78 wt%, No. 425 cement 13-15 wt%, fine slag grinding 3-5 wt%, water reducing agent 0.5-0.8 wt%, and water 3.5-6.0 wt%. And the compositions of the upper layer of the raw material are, steel slag particles 71-74 wt%, No. 425 cement 15-18 wt%, fine slag grinding 3.5-5.5 wt%, water reducing agent 0.7-0.9 wt%, and water 3.5-6.0 wt%.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a steel slag permeable pavement brick with a network pore structure. Background technique [0002] The current pavement bricks are roughly divided into ceramic-based and cement-based pavement permeable bricks. However, due to the high cost of ceramic-based pavement permeable bricks, they cannot be widely promoted at present. At present, cement-based pavement permeable bricks cannot completely overcome the problem of excessive strength drop after freezing and thawing. Steel slag is a kind of metallurgical solid waste that is difficult to use with high added value at present, and there are serious stockpiling problems in major steel factories in my country. On the one hand, the stockpiling of a large amount of steel slag occupies a large amount of land, consumes a lot of management costs and causes certain environmental pollution. Contents of the invention [0003] The purpose...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B28B1/30C04B18/14C04B28/02E01C5/00
CPCY02W30/91
Inventor 倪文周佳李建平王恩杨晓光
Owner UNIV OF SCI & TECH BEIJING