Effect of silica fume and PVA fiber on the abrasion resistance and volume stability of concrete
Effect of silica fume and PVA fiber on the abrasion resistance and volume stability of concrete
复制标题
硅灰和PVA纤维对混凝土耐磨性和体积稳定性的影响
DOI：
10.1016/j.compositesb.2017.07.058
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
E. Chen
中科院分区：
文献类型：
--
作者：
L. Wang;S.H. Zhou;Y. Shi;S.W. Tang;E. Chen
通过试验研究了硅灰、PVA纤维及其复合掺合料对水泥净浆和/或粉煤灰混凝土的力学性能、微观结构、耐磨性和体积稳定性的影响。结果表明，同时掺入硅灰和PVA纤维的混凝土的抗压强度和抗拉强度均较对照混凝土有明显提高。在混凝土中掺入PVA纤维显著降低了水泥净浆和混凝土的干缩，提高了混凝土的抗裂性，掺入硅灰和PVA纤维显著提高了混凝土的耐磨性。这些成果已成功地用于指导中国西南地区水工建筑物的设计和施工。
The effects of silica fume, PVA fiber and their combinations on the mechanical properties, microstructure, abrasion resistance and volume stability of cement pastes and/or fly ash concrete were studied experimentally in this work. The results indicated that the compressive strength and tensile strength of concrete containing both silica fume and PVA fiber were obviously improved compared with the control concrete. The addition of PVA fiber in concrete considerably reduced the drying shrinkage and improved the anti-cracking resistance of cement pastes and concrete, and the abrasion resistance of concrete significantly increased with the addition of silica fume and PVA fiber. These findings have been successfully adopted to guide the design and construction of hydraulic structures in the southwest of China.