Compressive stress-strain behavior of RFAC after high temperature

被引：3

作者：

Liang, Jiongfeng ^{[1
,2
,3
]}

Wang, Liuhaoxiang ^{[3
]}

Ling, Zhibin ^{[1
]}

Li, Wei ^{[1
]}

Yang, Wenrui ^{[3
]}

机构：

[1] Jiangsu Prov Key Lab Struct Engn, Suzhou, Peoples R China

[2] Xian Univ Architecture & Technol, State Key Lab Green Bldg Western China, Xian, Peoples R China

[3] East China Univ Technol, Fac Civil & Architecture Engn, Nanchang, Jiangxi, Peoples R China

来源：

COMPUTERS AND CONCRETE | 2022年 / 30卷 / 01期

关键词：

compressive strength; concrete; recycled fine aggregate; stress-strain relationship; temperature; RECYCLED AGGREGATE CONCRETE; STRENGTH; PERFORMANCE; CAPACITY; COLUMNS;

D O I：

10.12989/cac.2022.30.1.009

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

This paper discusses the effect of high temperatures (T-s) on the compressive strength and stress-strain curve of recycled fine aggregate concrete (RFAC), based on the experimental results. A total of 90 prisms (100 mmx100 mmx300 mm) were tested. The results show that the compressive strength and elastic modulus of RFAC specimens decreased significantly with increasing T values. As T increased, the strain corresponding to peak stress decreased first when T<200 degrees C and then increased afterwards. With increasing T values, the stress-strain curves became flat gradually, the peak stress dropped gradually, and B p decreased when T<200 degrees C and increased in the T range of 400-800 degrees C. A stress-strain relations for RFAC exposed to high T is proposed, which agree quite well with the test results and may be used to practical applications.

引用

页码：9 / 17

页数：9

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