Reuse of Stone Waste Powder Based on Uniform Design Test Method

Abstract

Abstract: In order to solve the problem of stone waste pollution, the preparation of economical, practical, and excellent performance fiber cement boards were studied. The raw materials of this board were granite waste powder and marble waste powder, combined with Portland cement, natural quartz sand, fly ash, and wood pulp fiber. The uniform design test method and regression analysis method were used to reveal the influences of granite waste powder and marble waste powder on the flexural strength, impact strength, and thermal conductivity of fiber cement boards. Through comparative experiments, the influences of granite waste powder and marble waste powder on the physical properties, hydration products, and microstructure of fiber cement boards were analyzed. The test results show that mixing granite waste powder and marble waste powder effectively improve the mechanical properties of fiber cement boards. When the mass ratio of granite waste powder, marble waste powder and cement is 0.625 and 0.417, it does not have a significant impact on the internal hydration products and internal microstructure morphology of the fiber cement boards. And the cement fiber boards can be prepared, which meet the requirements and are economical and applicable.

Key words: fiber cement board, granite waste powder, marble waste powder, uniform design, regression analysis, hydration product, microstructure

CLC Number:

TU525

TIAN Jiandong, LU Longyuan. Reuse of Stone Waste Powder Based on Uniform Design Test Method[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(5): 1536-1544.

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