摘要
Abstract
In order to study the effect of ceramsite lightweight aggregate on the performance of self-compacting concrete,9 groups of concrete specimens with different ceramsite content and 4 groups with different prewetting time were prepared for mechanical strength and shrinkage tests,and the performance of concrete under different ceramsite content and prewetting time was systematically studied.The results show that with the increase of prewetting time,the compressive strength of concrete decreases gradually at day 7 and day 28,but at day 60,the compressive strength increases first and then decreases.At day 7 and day 28,the compressive strength of all the samples was lower than that of the reference group,but at day 60,the compressive strength first increased and then decreased with the increase of the ceramic content.With the increase of prewetting time,the drying shrinkage value of concrete decreases obviously.The amount of ceramite has a significant effect on the drying shrinkage performance of concrete.关键词
自密实混凝土/陶粒轻骨料/力学性能/收缩性能Key words
Self-compacting concrete/Ceramisite lightweight aggregate/Mechanical properties/Shrinkage property分类
建筑与水利
