编号：CDUT-2023-34

标题：Microcracking mechanisms of cyclic freeze-thaw treated red sandstone: Insights from acoustic emission and thin-section analysis

入藏号：WOS:000549831600001

中国科学院文献情报中心期刊分区：工程技术1区/TOP（2022）

本校作者：陈国庆；裴本灿

来源出版物：CONSTRUCTION AND BUILDING MATERIALS  卷: 329  文献号: 127097

出版年：2022

第一地址：成都理工大学

关键词：Cyclic freeze -thaw; Acoustic emission; Sandstone; Microcracking mechanisms; Mode I loading

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摘要：We experimentally investigate the effects of cyclic freeze-thaw (F-T) on the microcracking behaviour of sandstone under mode I loading. The centre-cracked Brazilian disc tests were conducted on specimens after various numbers (0, 30, 60, 90, and 120) of cyclic F-T treatments with acoustic emission (AE) monitored. The microdamage caused by the F-T treatments to the sandstone is examined via thin-section analysis. The results show that the damage degree does not significantly increase until the F-T cycle number exceeds a threshold between 60 and 90. The AE results indicate that the cyclic F-T treatments inhibit the microcracking activities of the sandstone.

文章链接地址: https://linkinghub.elsevier.com/retrieve/pii/S0950061822007796