Fire resistance of strain hardening cementitious composite with hybrid PVA and steel fibers

被引：85

作者：

Liu, Jin-Cheng ^{[1
]}

Tan, Kang Hai ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Civil & Environm Engn, Singapore 639798, Singapore

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 135卷

关键词：

Temperature; Mechanical properties; SHCC; Fiber reinforcement; Explosive spalling; Fire resistance; TENSILE BEHAVIOR; FLY-ASH; CONCRETE; PERFORMANCE; TEMPERATURE; CRACKING;

D O I：

10.1016/j.conbuildmat.2016.12.204

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The novelty in this study was that, 0.5% volume of PVA fibers was replaced by steel fibers in strain hardening cementitious composite (SHCC) to alleviate the negative effect of melting of PVA fibers when exposed to fire. The resultant SHCC outperformed normal concrete specimens in terms of compressive strength reduction with elevated temperature. Compared to crushing failure of heated SHCC specimens with PVA fibers under compression, heated SHCC specimens with hybrid fibers exhibited a ductile failure mode. The tensile behavior of SHCC specimens heated to 300 degrees C did not show brittle rupture due to the addition of steel fibers. The addition of two types of fibers was also effective in preventing SHCC from explosive spalling at high temperature. This work provides a promising way to improve high temperature mechanical properties of SHCC. (C) 2016 Published by Elsevier Ltd.

引用

页码：600 / 611

页数：12

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