摘要
旨针对添加剂对水泥混凝土耐久性能的改善机理展开研究,通过分析水泥混凝土的组成和结构特点,以及矿物掺合料、缓凝剂和膨胀剂对水泥混凝土性能的影响,揭示了改善水泥混凝土耐久性的关键因素.分别探讨了矿物掺合料、缓凝剂和膨胀剂对水泥混凝土耐久性能的影响与作用机理,矿物掺合料影响了水泥混凝土的流动性、力学性能、抗渗性、抗冻性和收缩性能;缓凝剂对水泥混凝土的流动性、强度、干缩性能和抗渗性能产生影响;膨胀剂则影响了水泥混凝土的力学性能、抗渗性能、抗碳化性能、抗硫酸盐侵蚀性能以及抗冻融循环性能.
Abstract
The paper mainly studies the improvement mechanism of additives on the durability of cement concrete.It reveals key factors to improve the durability of cement concrete by analyzing its composition and structural characteristics,as well as the effects of mineral admixtures,retarding agents and expanding agents on its properties.It discusses the effects and mechanisms of mineral admixtures,retarders and expanding agents on the durability of cement concrete,respectively:mineral admixtures affect its fluidity,mechanical properties,anti-permeability,anti-frost properties and shrinkage properties,retarders affect its fluidity,strength,dry shrinkage properties and anti-permeability,and expanding agents affect its mechanical properties,anti-permeability,anti-carbonation properties,sulphate erosion resistance properties and freezing-thawing cycle resistance properties.
NETL
NSTL
万方数据