摘要
针对ASTMC1202试验方法的不足,借鉴混凝土氯离子扩散系数快速测定的RCM法对高性能混凝土的导电性进行了研究,包括不同的复合高效减水剂、水胶比以及复合矿物掺合料对高性能混凝土导电性的影响。28 d和56 d的电通量测试结果表明,减水剂品种对抗压强度的影响更为显著;复合矿物掺合料是改善高性能混凝土中氯离子渗透性的有力途径,56 d电通量均在500 C以下,其中,磨细矿渣和HK-P复掺的效果最佳。
Considering the limitation of ASTM C1202, we use RCM method for reference to study the electric capacity of HPC with different compound superplasticizers, different water/binder ration and compound mineral admixtures. The test results for electric flux of 28-days and 56-days show that the influence of different superplasticizers on compressive strength is more remarkable and the application of compound mineral admixtures is a good way to improve the resistance to penetration of chloride ions of HPC. It is also indicated that the effect of the compound of slag powder and HK-P is the best.
出处
《水运工程》
北大核心
2006年第12期41-44,共4页
Port & Waterway Engineering
关键词
高性能混凝土
氧离子渗透
电通量
复合掺合料
high-performance concrete
penetration of chloride ions
electric capacity
compound mineral admixtures
