Degradation characteristics of graphite tailings cement mortar subjected to freeze-thaw cycles

被引：31

作者：

Wang, Zhong-Rui ^{[1
]}

Li, Ben ^{[2
]}

Liu, Hong-Bo ^{[1
,3
]}

Zhang, Yu-Xin ^{[1
]}

Qin, Xiao ^{[2
]}

机构：

[1] Heilongjiang Univ, Sch Civil Engn, Harbin 150080, Peoples R China

[2] Foshan Univ, Sch Transportat Civil Engn & Architecture, Adv & Sustainable Infrastruct Mat Grp, Foshan 528000, Guangdong, Peoples R China

[3] Minist Educ Peoples Republ China, Key Lab Funct Inorgan Mat Chem, Harbin 150080, Heilongjiang, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2020年 / 234卷

基金：

中国国家自然科学基金;

关键词：

Graphite Tailings Cement Mortar (GTCM); Freeze-thaw cycles; Comprehensive characteristics; Material properties; MESOSCALE SIMULATION; MECHANICAL-PROPERTIES; FROST DAMAGE; CONCRETE; DURABILITY; MODEL; DEFORMATION; PREDICTION; CORROSION; BEHAVIOR;

D O I：

10.1016/j.conbuildmat.2019.117422

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper investigated the comprehensive properties and material characteristics of graphite tailings cement mortar (GTCM) subjected to different freeze-thaw cycles. The results show that the graphite tailings (GT) substantially improved the frost resistance of cement-based materials. Simultaneously, the mechanical properties of GTCM-20, GTCM-30 and GTCM-40 samples substantially improved at 75 N and 25 N, and this phenomenon was explained by the changes in the pore structure and meso-morphology of the GTCM. Finally, the results indicate that the optimal addition of GT for preparing a cement-based material for cold regions is 20% because of the synergistic development of the mechanical and antifreeze properties. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页数：15

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