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A kind of waste residue shale high-strength lightweight aggregate and its preparation method

A technology for lightweight aggregate and shale, which is applied in the field of high-strength lightweight aggregate of waste shale and its preparation, can solve the problems of not reaching the ideal design index, and the performance of composite ceramsite is not stable enough.

Active Publication Date: 2016-03-16
HEBEI INSTITUTE OF ARCHITECTURE AND CIVIL ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nevertheless, the performance of this composite ceramsite is not stable enough, and some performances have not yet reached the ideal design index.

Method used

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  • A kind of waste residue shale high-strength lightweight aggregate and its preparation method
  • A kind of waste residue shale high-strength lightweight aggregate and its preparation method

Examples

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Embodiment 1

[0024] A waste shale high-strength lightweight aggregate, the weight components of the aggregate are 60 parts of shale, 38 parts of third-grade fly ash, 0.95 parts of silicon carbide, and 2 parts of slag, wherein the Platts The hardness coefficient is 1.5-5, preferably the Platts hardness coefficient is 4-5, the plasticity index ranges from 5-23, the drying sensitivity coefficient is 0.14-1.6, and the drying line shrinkage rate is 2.5-10%. Loss 13%, SiO 2 52-70%, Fe 2 o 3 2-5%, Al 2 o 3 14-20%, CaO7-12%, MgO0.1-4%; the composition of the slag includes ignition loss of 0, SiO 2 36.62%, Fe 2 o 3 1.75%, Al 2 o 3 12.30%, CaO33.54%, MgO6.94%; the fly ash includes a loss on ignition of 5-10%, SiO 2 53-70%, Fe 2 o 3 7-10%, Al 2 o 3 12-20%, CaO7%, MgO2-5%; the purity of silicon carbide is 80%.

Embodiment 2

[0026] A waste shale high-strength lightweight aggregate. The weight components of the aggregate are 50 parts of shale, 48 parts of fly ash, 0.1 part of silicon carbide, and 2 parts of slag, wherein the Platinum hardness coefficient of shale is 5, The range of plasticity index is 23, the drying sensitivity coefficient is 1.6, and the drying line shrinkage rate is 10%. The shale includes 13% loss on ignition, 52% SiO2, 35% Fe2O3, 20% Al2O3, 12% CaO, and 4% MgO; the slag The components include LOI of 0, SiO2 36.62%, Fe2O3 1.75%, Al2O3 12.30%, CaO3 3.54%, MgO6.94%; the fly ash includes LOI of 10%, SiO2 53% , Fe2O310%, Al2O320%, CaO7%, MgO5%; the purity of silicon carbide is 80%.

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Abstract

The invention discloses a waste slag shale high-strength lightweight aggregate and a preparation method thereof. The aggregate comprises the following components in parts by weight: 60-100 parts of shale, 45-60 parts of fly ash, 0.05-0.95 part of silicon carbide and 4-8 parts of slag, wherein the protodyakonov hardness coefficient of the shale is 1.5-5 preferably 4-5, the plasticity index range is 5-23, the drying sensitivity coefficient is 0.14-1.6, and the drying linear shrinkage ratio is 2.5-10%; the shale comprises the following components in percentage by weight: 13% of ignition loss, 52-70% of SiO2, 2-5% of Fe2O3, 14-20% of Al2O3, 7-12% of CaO and 0.1-4% of MgO; the slag comprises the following components in percentage by weight: 0% of ignition loss, 36.62% of SiO2, 1.75% of Fe2O3, 12.30% of Al2O3, 33.54% of CaO and 6.94% of MgO; the fly ash comprises the following components in percentage by weight: 5-10% of ignition loss, 53-70% of SiO2, 7-10% of Fe2O3, 12-20% of Al2O3, 7% of Ca and 2-5% of MgO; the purity of silicon carbide is 80%.

Description

technical field [0001] The invention belongs to the field of inorganic nonmetals, and in particular relates to a waste shale high-strength lightweight aggregate and a preparation method thereof. Background technique [0002] Ceramsite lightweight aggregate concrete has always been the largest field of application of ceramsite. This year, due to the rapid development and rise of ceramsite products such as ceramsite blocks, wall panels, and roof panels, ceramsite lightweight aggregate concrete has retreated to the second largest field of ceramsite application, but from the longitudinal comparison of ceramsite concrete itself, The application volume is still growing rapidly, and the development speed is getting faster every year. With the continuous expansion of the application field of ceramsite, the proportion of ceramsite concrete in the total application of ceramsite will definitely decrease, but its wider application is also inevitable. The development of lightweight con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B22/08C04B18/30C04B14/04
CPCY02W30/91
Inventor 元敬顺麻建锁张会芳阎杰孙婧
Owner HEBEI INSTITUTE OF ARCHITECTURE AND CIVIL ENGINEERING