摘要
研究了引气剂对混凝土工作性、力学性能以及抗冻融性能的影响。结果表明:通过掺加引气剂增加新拌混凝土含气量,可以改善混凝土的工作性。同时混凝土的冻融耐久性得以改善,气孔间距系数越小,混凝土的冻融耐久性指数就越大。但是,引气剂的掺入降低了混凝土的强度,硬化混凝土平均孔径越小,越有利于减小因引气而造成的抗压强度损失。
Effects of air entraining agents （AEA） on workability, mechanical properties and freezing-thawing circle of concrete were studied in this paper. The results indicated that the workability and freezing-thawing circle performance of concrete added with AEA were improved ; freez- ing-thawing durability increased with the decrease of spacing factor. But .AEA decreased the compressive strength of concrete. For the hardened wurete, the smaller the arerage pore size is, the more wnducive to reduce the loss of compressive strength eoused by AEA.
出处
《粉煤灰综合利用》
CAS
2013年第5期7-9,共3页
Fly Ash Comprehensive Utilization
基金
"十二五"国家科技支撑计划(2011BAJ04B05)
国家自然科学基金资助项目(51378391)
关键词
引气剂
混凝土
抗压强度
工作性
耐久性
air entraining agents
concrete
compressive strength
workability
durability
