The effect of mechanical and thermal properties of FRP bars on their tensile performance under elevated temperatures

被引：122

作者：

Ashrafi, Harried ^{[1
,3
]}

Bazli, Milad ^{[2
,3
]}

Najafabadi, Esmaeil Pournamazian ^{[2
]}

Oskouei, Asghar Vatani ^{[4
]}

机构：

[1] IIEES, Struct Res Ctr, Tehran, Iran

[2] Sharif Univ Technol, Civil Engn Dept, Tehran, Iran

[3] Shahid Rajaee Teacher Training Univ, Fac Civil Engn, Tehran, Iran

[4] Shahid Rajaee Teacher Training Univ, Dept Civil Engn, Tehran, Iran

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 157卷

关键词：

Fiber-reinforced-polymer(FRP) bars; FRP; Elevated temperatures; Thermal properties; Mechanical testing; REINFORCED POLYMER BARS; HIGH-STRENGTH CONCRETE; BOND CHARACTERISTICS; RIBBED-SURFACE; GFRP BARS; FIBER; FIRE; ENVIRONMENTS; MEMBERS; DESIGN;

D O I：

10.1016/j.conbuildmat.2017.09.160

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this experimental study the effect of physical and thermal properties of various FRP bars on their performance under elevated temperatures are investigated. The parameters included the bars' diameter, type of fiber, type of resin, fiber to matrix ratio, and thermal properties were studied. Moreover, ANOVA (ANalysis Of VAriance) was performed in order to investigate the contribution of each variable on the obtained results. The results showed that in addition to the temperature, the bars' diameter, type of fiber, type of resin, and thermal properties (T-g and T-d) of the FRP bars have contributions to the results, while the fiber to matrix ratio was found to be an ineffective factor. It was also found that the FRP bars experienced significant reductions in their ultimate tensile strength upon exposure to extreme temperatures of up to 450 degrees C, at which they lost about 50-70% of their reference tensile strength. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：1001 / 1010

页数：10

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