Preventive effects of polypropylene and jute fibers on spalling of UHPC at high temperatures in combination with waste porous ceramic fine aggregate as an internal curing material

被引：90

作者：

Ozawa, Mitsuo ^{[1
]}

Parajuli, Sirjana Subedi ^{[1
]}

Uchida, Yuichi ^{[2
]}

Zhou, Bo ^{[3
]}

机构：

[1] Gunma Univ, Dept Environm Engn Sci, 1-5-1 Tenjin Cho, Kiryu, Gunma 3768515, Japan

[2] Gifu Univ, Dept Civil Engn, 1-1 Yanagido, Gifu 5011193, Japan

[3] Kumagai Gumi Co Ltd, Shinjuku Ku, 2-1 Tsukudo Cho, Tokyo 1628557, Japan

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2019年 / 206卷

基金：

日本学术振兴会;

关键词：

Ultra-high-performance concrete (UHPC); Spalling; Jute fiber; Internal curing material; HIGH-PERFORMANCE CONCRETE; HIGH-STRENGTH CONCRETE; AUTOGENOUS SHRINKAGE; MECHANICAL-PROPERTIES; FIRE RESISTANCE; PORE PRESSURE; BEHAVIOR; HPC;

D O I：

10.1016/j.conbuildmat.2019.02.056

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The use of ultra-high-performance concrete (UHPC) with internal curing (IC) increases composite strength but increases the risk of spalling under high temperatures. As including fibers in the composite can mitigate this risk, this study tested UHPC specimens with and without IC and at different levels of jute and polypropylene fibers under ISO 834 heating conditions, monitoring internal temperature, vapor pressure, and spalling period and extent. Control specimens were severely damaged whereas spalling was decreased by the inclusion of IC and fiber. A jute fiber content of 0.5% was the most effective of all combinations at mitigating damage. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：219 / 225

页数：7

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