论文名称：Rheology, fiber distribution and mechanical properties of calcium carbonate (CaCO3) whisker reinforced cement mortar
论文类型：期刊论文
发表刊物：COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
收录刊物：SCIE、EI、Scopus
卷号：90
页面范围：662-669
ISSN号：1359-835X
关键字：Calcium carbonate whisker; Rheology; Distribution of microfiber; Mechanical property
摘要：Calcium carbonate (CaCO3) whiskers are a new kind of microfiber used in cementitious composites and have proved to provide excellent effect on strengthening and toughening. In order to further improve the mechanical properties of CaCO3 whisker-reinforced cementitious composites, rheological properties of fresh mixtures and the CaCO3 whisker distribution in the hardened matrix were investigated. The yield stress and plastic viscosity increased with an increasing content of CaCO3 whisker and a decreasing water-cement ratio. Also, the rheological properties were affected by the distribution of CaCO3 whisker in the matrix. The largest increments in flexural and compressive strength were 27.59% and 12.60% for the mortars with CaCO3 whisker contents of 2.0% and 1.5%, respectively. The properties responsible for the mechanical response were explained in terms of the effects of CaCO3 whisker reinforcement, the distribution of CaCO3 whiskers, and the porosity as well as pore size distribution. (C) 2016 Elsevier Ltd. All rights reserved.
发表时间：2016-11-01