Effects of Polypropylene Fiber on Anti-Cracking of Cement Mortars

摘要：

The effects of volume fraction, length, cross-section shape and modification of polypropylene fiber (PP) on the anti-cracking properties of cement mortars are tested and discussed in this paper. The experimental results show that, PP fibers can obviously increase the anti-cracking properties of cement mortars in plastic stage, as well as hardening stage, that is, plastic-shrinkage cracks and dry-shrinkage cracks are both decreased With the admixture of PP fibers in cement mortars. And the factors discussed in this study are all have certain effects on the anti- cracking properties of cement mortars, for example, with the increase of volume fraction, length, specific area and surface roughness of PP fibers, the cement mortars will have better anti-cracking properties.

关键词： fiber reinforced cement mortars anti-cracking property polypropylene fiber dry-shrinkage cracks plastic-shrinkage cracks.

作者: LIU Lifang LI Ruikai YANG Xiaojie

作者单位: College of Textiles, Dongkua University, Shanghai 201620, P. R. China School of Economics and Management, Tongji University, Shanghai 200092, P. R. China School of Materials Science and Engineering, Tongji University, Shanghai 200092, P. R. China

会议类型: 国际会议

会议名称: 2007年先进纤维与聚合物国际会议

会议地点: 上海

会议语种:英文

页码: 364-367

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）