Mechanical Characterization of High-Performance Steel-Fiber Reinforced Cement Composites with Self-Healing Effect

被引：52
|
作者：
Kim, Dong Joo [1 ]
Kang, Seok Hee [1 ]
Ahn, Tae-Ho [2 ]
机构：
[1] Sejong Univ, Dept Civil & Environm Engn, Seoul 143747, South Korea
[2] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan
来源：
MATERIALS | 2014年 / 7卷 / 01期
基金：
日本学术振兴会; 新加坡国家研究基金会;
关键词：
self-healing; fiber reinforcement; bond strength; composite; crack detection; BEHAVIOR; CAPABILITY;
D O I：
10.3390/ma7010508
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The crack self-healing behavior of high-performance steel-fiber reinforced cement composites (HPSFRCs) was investigated. High-strength deformed steel fibers were employed in a high strength mortar with very fine silica sand to decreasing the crack width by generating higher interfacial bond strength. The width of micro-cracks, strongly affected by the type of fiber and sand, clearly produced the effects on the self-healing behavior. The use of fine silica sand in HPSFRCs with high strength deformed steel fibers successfully led to rapid healing owing to very fine cracks with width less than 20 mu m. The use of very fine silica sand instead of normal sand produced 17%-19% higher tensile strength and 51%-58% smaller width of micro-cracks.
引用
收藏
页码：508 / 526
页数：19
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