C25抗离析超保坍稳态混凝土的试验研究  

Experimental research on C25 segregation-resisting super-slump-loss-resisting stable-concrete

作　　者：梁超 胡延军 贾建春 

机构地区：[1]国网山西送变电工程公司,山西太原030006

出　　处：《山西建筑》2017年第26期118-119,共2页Shanxi Architecture

摘　　要：针对特高压工程施工的特点,提出采用索道输送预拌混凝土,以达到环保高效的目的。试验结果表明:C25抗离析超保坍稳态混凝土的凝结时间可延长至20 h以上,混凝土在模拟晃动下放置2 h以上不泌水、不离析,不经过二次搅拌可直接浇筑。该研究为山区特高压工程绿色、快捷施工提供了技术保障。In light of extra-high voltage engineering construction features,the paper puts forward prefabricated concrete transportation through the cableway so as to achieve the goal of environment protection and high efficiency.The experimental results show that： the setting time of C25 segregation-resisting super-slump-loss-resisting stable-concrete can be prolonged to more than 20 h,the concrete under simulating swaying will not bleeding and segregating within more than 2 h,concrete can be directly grouted without being secondary mixed.The above-mentioned research achievements can provide technical guarantee for green and fast construction of mountainous extra-high-voltage engineering.

关 键 词：功能型外加剂 抗离析 超保坍 超缓凝 

分 类 号：TU502[建筑科学—建筑技术科学]