Experimental study on effects of freeze-thaw fatigue damage on the cracking behaviors of sandstone containing two unparallel fissures

被引：74

作者：

Zhou, Xiao-Ping ^{[1
,2
]}

Niu, Yong ^{[1
,2
]}

Zhang, Jian-Zhi ^{[1
,2
]}

Shen, Xue-Cheng ^{[1
,2
]}

Zheng, Yu ^{[1
,2
]}

Berto, Filippo ^{[3
]}

机构：

[1] Chongqing Univ, Sch Civil Engn, Chongqing 400045, Peoples R China

[2] Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400045, Peoples R China

[3] Norwegian Univ Sci & Technol, Dept Mech Engn, N-7491 Trondheim, Norway

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2019年 / 42卷 / 06期

基金：

中国国家自然科学基金;

关键词：

cracking process; fatigue damage; freeze-thaw (FT) cycle; sandstone; uniaxial compression; MECHANICAL-PROPERTIES; ISOSTATIC GRAPHITE; COALESCENCE; ROCK; PART; STRENGTH; FRACTURE; FAILURE; NOTCHES; GROWTH;

D O I：

10.1111/ffe.12987

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper investigates the effects of freeze-thaw (FT) fatigue damage on the cracking behaviors of sandstone specimens containing two unparallel fissures under uniaxial compression. First, the effects of FT fatigue damage and fissure angle on the mechanical properties of sandstone specimens are analyzed. Second, the real-time cracking process of sandstone specimens is captured by a high-speed digital video camera system. Seven crack coalescence patterns are observed in this experiment. Local strong fatigue-damaged zones, which are visualized as white zones, are observed in the specimens subjected to FT cycles during loading. Finally, scanning electron microscopy (SEM) observations show that the local strong fatigue-damaged zones mainly consisted of microcracks and micropores induced by the FT fatigue damage. These experimental results are helpful for improving the understanding of the cracking process in cold-region engineering.

引用

页码：1322 / 1340

页数：19

共 38 条

[1] Predicting mechanical strength loss of natural stones after freeze-thaw in cold regions [J].

Bayram, Fatih .

COLD REGIONS SCIENCE AND TECHNOLOGY, 2012, 83-84 :98-102

[2] Recent developments in brittle and quasi-brittle failure assessment of engineering materials by means of local approaches [J].

Berto, F. ;

Lazzarin, P. .

MATERIALS SCIENCE & ENGINEERING R-REPORTS, 2014, 75 :1-48

[3] Brittle fracture of sharp and blunt V-notches in isostatic graphite under pure compression loading [J].

Berto, F. ;

Lazzarin, P. ;

Ayatollahi, M. R. .

CARBON, 2013, 63 :101-116

[4] Brittle fracture of sharp and blunt V-notches in isostatic graphite under torsion loading [J].

Berto, F. ;

Lazzarin, P. ;

Ayatollahi, M. R. .

CARBON, 2012, 50 (05) :1942-1952

[5] A review of the volume-based strain energy density approach applied to V-notches and welded structures [J].

Berto, F. ;

Lazzarin, P. .

THEORETICAL AND APPLIED FRACTURE MECHANICS, 2009, 52 (03) :183-194

[6] Fracture coalescence in rock-type materials under uniaxial and biaxial compression [J].

Bobet, A ;

Einstein, HH .

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 1998, 35 (07) :863-888

[7] The initiation of secondary cracks in compression [J].

Bobet, A .

ENGINEERING FRACTURE MECHANICS, 2000, 66 (02) :187-219

[8] Cyclic and Fatigue Behaviour of Rock Materials: Review, Interpretation and Research Perspectives [J].

Cerfontaine, B. ;

Collin, F. .

ROCK MECHANICS AND ROCK ENGINEERING, 2018, 51 (02) :391-414

[9] Fatigue properties of rock salt subjected to interval cyclic pressure [J].

Fan, Jinyang ;

Chen, Jie ;

Jiang, Deyi ;

Ren, Song ;

Wu, Jianxun .

INTERNATIONAL JOURNAL OF FATIGUE, 2016, 90 :109-115

[10] Compressive failure characteristics of yellow sandstone subjected to the coupling effects of chemical corrosion and repeated freezing and thawing [J].

Fang, Xinyu ;

Xu, Jinyu ;

Wang, Peixi .

ENGINEERING GEOLOGY, 2018, 233 :160-171

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