论文类型：期刊论文
发表刊物：CONSTRUCTION AND BUILDING MATERIALS
收录刊物：Scopus、EI、SCIE
卷号：57
页面范围：45-52
ISSN号：0950-0618
关键字：Calcium carbonate whisker; Hybrid fiber; Mechanical response; Shrinkage
摘要：A new kind of fiber hybridization containing steel fibers, polyvinyl alcohol (PVA) fibers and cheap calcium carbonate (CaCO3) whiskers (approximately $230 per ton) was designed to improve the mechanical response and shrinkage performance as well as reduce the production cost of fiber reinforced cementitious composites. Compressive response, flexural response, drying shrinkage and plastic shrinkage of this designed hybrid fiber reinforced composites were presented. The results indicated that the designed hybrid fiber shows a significant positive hybrid effect on mechanical response and plastic shrinkage of cementitious composites. Steel fibers are more effective in restricting drying shrinkage. PVA fibers and CaCO3 whiskers are more effective in restraining plastic shrinkage. Good mechanical response and satisfactory shrinkage performance of the designed hybrid fiber reinforced cementitious composites make it possible to partly replace the steel fibers and PVA fibers by using CaCO3 whisker, thus helping to decrease the production cost of fiber reinforced cementitious composites for large scale construction project applications in the future. (C) 2014 Elsevier Ltd. All rights reserved.