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Preparation and using method of steel slag colorful pavement brick with water penetrating function

A kind of pavement brick and color technology, which is applied in the direction of paving, roads, roads, etc., which are paved with prefabricated blocks, can solve the problems of management cost, land occupation, environmental pollution, etc., and achieve the goal of protecting the environment, saving energy and reducing production costs. Effect

Inactive Publication Date: 2004-11-10
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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  • Preparation and using method of steel slag colorful pavement brick with water penetrating function
  • Preparation and using method of steel slag colorful pavement brick with water penetrating function
  • Preparation and using method of steel slag colorful pavement brick with water penetrating function

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] 1. Red pigment is mixed with No. 42.5 ordinary Portland cement to make dark red Portland cement, wherein red pigment accounts for 2.0wt.%, and ordinary Portland cement accounts for 98wt.%. The above-mentioned mixed colored cement is first covered with the bottom of the mold according to 10.0wt.% of the total cement consumption. Mix No. 42.5 ordinary Portland cement and 0-15mm steel slag sand at a ratio of ash / sand ratio 0.30 / 1, and then add tap water. The ratio of water / ash is 0.50 / 1. Vibration molding after stirring evenly. The hole density of the adobe is 3 holes / 100cm 2 , The permeable brick belt mold was cured for one day at 20°C and 90% humidity, and then demoulded and soaked in water for 27 days. The various properties are shown in Table 1.

[0019] Compressive strength

(MPa)

Flexural strength

(MPa)

Compressive strength after 25 freeze-thaw cycles (MPa)

Permeability

(ml / cm 2 ·Second)

41.9

3.3

33.6

1.211 ...

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PUM

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Abstract

The present invention relates to the field of building material, in particular the process for making and use of permeable steel slag colored pavement bricks, characterized in that steel slag is used as coarse and fine aggregate to replace sand and gravel, wherein the raw materials of the colored pavement bricks are added with 60%-80% of steel slag with grain size being 0-20mm apart from the No. 425 common silicate cement. In the forming process of the steel slag colored pavement bricks, the die roof board is provided with 5-15 inverted polygons or cones, thus forming a series of inverted taper holes on the opposite sides of the pavement bricks during vibration molding.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a steel slag colored pavement brick with a water-permeable function. 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 Applications(China)
IPC IPC(8): B28B1/08C04B18/14C04B28/04E01C5/00
CPCY02W30/91
Inventor 倪文刘娟红周佳刘凤梅杨晓光
Owner UNIV OF SCI & TECH BEIJING
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