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Preparation method of blast furnace granulation slag wear-resistant pavement brick

A pavement brick and granulation technology, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as large consumption of quartz sand, achieve low production cost, improve wear resistance, and resist compression Good strength and wear resistance

Inactive Publication Date: 2015-02-11
贵州省建筑材料科学研究设计院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the consumption of quartz sand is very large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Using traditional pavement brick formula as the base material, the mass percentage is 79% of blast furnace granulated slag, 12% of slag powder, 8% of Portland cement, and 1% of natural anhydrite to prepare pavement brick surface material. After weighing and mixing the raw materials Add water and stir evenly. The proportion of water added is basically the same as the traditional amount. It is molded by a non-burning brick machine formed by vibration and pressure, and it is naturally cured for 28 days.

[0013] The prepared blast furnace granulated slag wear-resistant pavement brick has a compressive strength of 31 MPa, and has undergone abrasion test, and its grinding pit length is 28 mm.

Embodiment 2

[0015] Using traditional pavement brick formula as the base material, the mass percentage is 72% of blast furnace granulated slag, 11% of slag powder, 8% of fly ash, 8% of Portland cement, and 1% of calcined desulfurized gypsum at 750℃ to prepare the surface layer of pavement tiles. Material: Weigh and mix the raw materials, add water and stir evenly. The proportion of water added is basically the same as the traditional amount. It is molded by a non-burning brick machine formed by vibration pressure and steam cured at 70°C for 12 hours to obtain abrasion-resistant pavement brick products.

[0016] The prepared blast furnace granulated slag wear-resistant pavement brick has a compressive strength of 32 MPa, and has undergone abrasion resistance test, and its grinding pit length is 30 mm.

Embodiment 3

[0018] Using traditional pavement brick formula as the base material, the mass percentage is 65% of blast furnace granulated slag, 10% of slag powder, 13.5% of fly ash, 10% of Portland cement, and 1.5% of industrial by-product gypsum to prepare pavement brick surface material , After weighing and mixing the raw materials, add water and stir evenly. The proportion of water added is basically the same as the traditional amount. It is formed by a non-burning brick machine formed by vibration and pressure. It is naturally cured for 28 days to obtain wear-resistant pavement products.

[0019] The prepared blast furnace granulated slag wear-resistant pavement brick has a compressive strength of 34 MPa, and has been tested for wear resistance, and its grinding pit length is 31 mm.

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Abstract

The invention discloses a preparation method of a blast furnace granulation slag wear-resistant pavement brick. According to the invention, a traditional pavement brick base material is adopted as a base material, and blast furnace granulation slag, slag micro-powder, fly ash, cement, and an activator are adopted as pavement brick surface layer materials. Water content is regulated and the materials are well mixed by stirring; the mixture is molded through vibration compression; and steam curing or natural curing is carried out, such that the wear-resistant pavement brick is obtained. According to the invention, blast furnace granulation slag is adopted as a main surface layer material, and can be used for completely replacing quartz sand. The wear-resistant pavement brick prepared with the method provided by the invention has the advantages of low production cost, good product wear resistance, and the like. According to a compression test, the compressive strength of the brick is higher than 30MPa; and according to a wearing test, the wearing pit length of the brick is lower than 32mm. The product has good compressive strength and wear resistance.

Description

technical field [0001] The invention relates to a preparation method of blast furnace granulated slag wear-resistant pavement bricks, and belongs to the technical field of producing building materials by utilizing industrial solid waste. Background technique [0002] In recent years, my country's urban expansion is very fast. A large number of sidewalks, community walkways, and squares need a large number of wear-resistant pavement bricks. Due to the restricted mining and usage of river sand, the main material for making pavement bricks is limestone machine-made sand. Limestone-based machine-made sand can meet the requirements for the production of pavement bricks in terms of strength, but its hardness is generally around 3, which is relatively low. In order to improve the wear resistance of paving bricks, it is common practice to add a layer of quartz sand on the surface of the paving bricks as a wear-resistant layer. Therefore, the consumption of quartz sand is very lar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/14
CPCY02W30/91
Inventor 贺深阳万军彭能华王勇唐朝军高遇事彭建军刘恒波贾韶辉吴双孙夔张贤杰赵怡然
Owner 贵州省建筑材料科学研究设计院有限责任公司