土木工程与管理学报2017，Vol.34Issue(6)：41-44,4.
纳米SiO2和P VA纤维增强水泥基复合材料抗冻性能
Freezing Resistance of Nano-SiO2 and PVA Fiber Reinforced Cement Matrix Composites
摘要
Abstract
The relative dynamic elastic modulus of specimens after freezing and thawing cycles were measured by freezing testing method to investigate the freezing resistance of the nano-SiO2 and PVA fiber reinforced cement matrix composites with the single addition of nano-SiO2 and combined addition of PVA fiber and nano-SiO2 particles. The influence of the content of nano-SiO2 and PVA fiber on the freezing resistance of cement-based composite materials was discussed. The results show that the content of PVA fiber in a certain range can improve the freezing resistance of cement-based composite materials, however too much content (> 0.9%) of PVA fiber has an adverse effect on the freezing resistance of cement-based composite materials. Adding nano-SiO2 into PVA fiber reinforced cement-based composite materials can significantly improve the freezing resistance. Within the range of the contents of nano-SiO2 in this study, with the increase of nano-SiO2 , the freezing resistance of cement-based composite materials is getting better and better. Adding 2% nano-SiO2 in cement-based composite materials mixed with a certain content (< 0.9%) of the PVA fibers can improve the freez-ing resistance of cement-based composite materials.关键词
水泥基复合材料/冻融循环/相对动弹性模量/纳米SiO2/PVA纤维Key words
cement-based composite materials/freezing-thawing cycle/relative dynamic elastic mod-ulus/nano-SiO2/PVA fiber分类
建筑与水利引用本文复制引用
张鹏,代小兵,高继祥,张凯旋,付世东..纳米SiO2和P VA纤维增强水泥基复合材料抗冻性能[J].土木工程与管理学报,2017,34(6):41-44,4.基金项目
河南省高校科技创新人才支持计划项目(16HASTIT012) （16HASTIT012）
河南省教育厅科学技术研究重点项目(14A560005) （14A560005）
郑州大学优秀青年教师发展基金(1421323079) （1421323079）
