作者
Victor C Li, Henrik Stang, Herbert Krenchel
发表日期
1993/10
期刊
Materials and structures
卷号
26
页码范围
486-494
出版商
Kluwer Academic Publishers
简介
The stress-crack width relationship has been determined experimentally for concretes reinforced with two types of fibres, steel and polypropylene, of various fibre volume fractions. A micromechanics-based theoretical model is proposed which captures the essential features of the stress-crack width relationships at small crack widths (less than 0.3 mm).
Micromechanisms accounted for include the bridging actions due to aggregates and fibres, Cook-Gordon interface debonding and fibre pre-stress. The fibre bridging action involves interface slip-dependent friction as well as snubbing friction for fibres bridging at inclined angles. Theoretical predictions based on independent parametric inputs compare favourably with experimental measurements of the stress-crack width relationship. Findings in this research provide confidence in the use of the proposed model for materials engineering targeted at …
引用总数
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VC Li, H Stang, H Krenchel - Materials and structures, 1993