Effect of sulphate attack on the flexural fatigue behaviour of fly ash-based geopolymer concrete

被引：15

作者：

Long, Tao ^{[1
,2
]}

Zhang, Hongen ^{[1
,2
]}

Chen, Yu ^{[3
,4
]}

Li, Zhi ^{[1
,2
]}

Xu, Jiageng ^{[3
]}

Shi, Xiaoshuang ^{[1
,2
]}

Wang, Qingyuan ^{[1
,2
,3
,4
,5
]}

机构：

[1] Sichuan Univ, Coll Architecture & Environm, Failure Mech & Engn Disaster Prevent & Mitigat Ke, Chengdu 610065, Sichuan, Peoples R China

[2] Sichuan Univ, Coll Architecture & Environm, Key Lab Deep Underground Sci & Engn, Minist Educ, Chengdu, Sichuan, Peoples R China

[3] Chengdu Univ, Sch Architecture & Civil Engn, Chengdu 610106, Sichuan, Peoples R China

[4] Chengdu Univ, Engn Res Ctr Powder Met Sichuan Prov, Chengdu, Sichuan, Peoples R China

[5] Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu, Sichuan, Peoples R China

来源：

JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN | 2018年 / 53卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Sulphate attack; geopolymer concrete flexural fatigue; Weibull distribution; fatigue equation; S-N CURVES; MECHANICAL-PROPERTIES; DURABILITY; AGGREGATE; LIFE;

D O I：

10.1177/0309324718783607

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this work, the erosion effect of sulphate solution on the flexural fatigue behaviour of fly ash-based geopolymer concrete was investigated. Under cyclic bending loading, the effect of sulphate attack on the fatigue life of geopolymer concrete was analysed using the static flexural strength as the damage index. Results revealed that the fatigue life of geopolymer concrete after sulphate erosion was significantly reduced compared with uncorroded samples under the same fatigue loading condition. And the fatigue life of corroded/uncorroded geopolymer concrete can be approximately described by the two-parameter Weibull distribution model. Since the sulphate attack would increase the actual stress level of corroded geopolymer concrete, a fatigue equation considering the damage index was deduced to predict the fatigue life of geopolymer concrete after sulphate attack.

引用

页码：711 / 718

页数：8

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