Effect of Mica Content in Stone Powder of Manufactured Sand on Performance of Cement Mortar

Jie Quan Xing; Shu Lin Zhan; Xin Yu Li

doi:10.4028/www.scientific.net/AMR.1044-1045.624

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1044-1045Effect of Mica Content in Stone Powder of...

Effect of Mica Content in Stone Powder of Manufactured Sand on Performance of Cement Mortar

Abstract:

This paper studies the influence on compressive strength, freezing resistance and microstructure of cement mortar with different content of mica in stone powder, in the tests, manufactured sand with high content of mica and natural river sand were mixed with different proportion, and the content of stone powder was the same in mixed sand. Experiment results indicate that, with the increasing of mica content in stone powder, 28d and 60d compressive strength of cement mortar decreases obvious, mass loss rate and strength loss rate with 50 freeze-thaw cycles increase a little. Microstructure of cement mortar with higher content of mica is not compactly by SEM, the internal defects of cement hardened pastes could be increased because of the flake mica which surface is smooth, and it will cause the spread of micro crack.

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Periodical:

Advanced Materials Research (Volumes 1044-1045)

Pages:

624-628

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1044-1045.624

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Online since:

October 2014

Authors:

Jie Quan Xing, Shu Lin Zhan*, Xin Yu Li

Keywords:

Cement Mortar, Freeze-Thaw Cycles, Mica Content, Microstructure, Stone Powder, Strength

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