A Review on the Performance of Fibers on Restrained Plastic Shrinkage Cracks

被引:1
作者
Folorunsho, Abidemi Bashiru [1 ]
Kim, Seungwon [1 ]
Park, Cheolwoo [1 ]
机构
[1] Kangwon Natl Univ, Dept Civil & Construct Engn, 346 Jungang Ro, Samcheok 25913, South Korea
基金
新加坡国家研究基金会;
关键词
early-age cracks; plastic shrinkage cracks; fiber-reinforced concrete; fibers; ASTM C1579; modified ASTM C1579; LIFE-CYCLE ASSESSMENT; SELF-COMPACTING CONCRETE; MECHANICAL-PROPERTIES; REINFORCED-CONCRETE; AUTOGENOUS SHRINKAGE; STEEL FIBER; EARLY-AGE; SYNTHETIC-FIBERS; DRYING SHRINKAGE; PORTLAND-CEMENT;
D O I
10.3390/buildings14082477
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Multiple studies have investigated the use of steel, synthetic fibers, and natural fibers to reduce plastic shrinkage cracks in concrete, which are mostly caused by water evaporation from the surface of the material. This review used original published research articles from the Web of Science and Scopus database to evaluate the performance and relationship between the fiber volume, aspect ratio, compressive strength, and plastic shrinkage cracking. This review also discussed the most widely used technique for evaluating plastic shrinkage cracking, the ASTM C 1579, with two bottom restraints and a central stress riser to induce cracking, and its modified version with additional reinforcement for further restraining the ASTM C 1579 mold. Longer fibers function better than shorter fibers because of their larger surface area, which allows them to bridge fissures. It was also observed that crack initiation time is delayed when fibers are added to concrete. In addition, as the volume proportion of the fibers increased, the plastic shrinkage cracks decreased, but the compressive strength declined. Furthermore, the volume fraction of the fibers had a greater effect on reducing cracking than the aspect ratio. It was also concluded that a fiber volume inclusion below 1% is best.
引用
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页数:33
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