摘要
当混凝土所处环境经常发生冻融循环时,为满足其耐久性要求,必须将大量的稳定小气泡引入该混凝土中以产生质量足够好的孔隙系统,从而避免混凝土受到冻融破坏。为此,本文研究了几种引气剂(A EA)和孔隙质量控制剂(A VC)在改善硬化混凝土气泡参数时所起的作用。另外,对混凝土分别单掺萘系减水剂(BNS)和聚羧酸系减水剂(PCE),以及混掺AV C与PCE后的孔隙系统质量的优劣情况,本文也作了比较。
An adequate and stable air void system is the essential requirements for producing durable concrete that resists damage due to fi＇eezing and thawing cycles under saturated conditions. In this regard, several air entraining agents （AEAs） and air void controllers （AVCs） were investigated with respect to their effects to improve air void parameters in the paper. In addition, air void parameters for BNS concrete and PCE concrete and combinations of PCE with AVCs were tested to verify which one takes advantages to resist to cyclic freezing and thawing.
出处
《混凝土》
CAS
CSCD
北大核心
2006年第8期28-31,共4页
Concrete
