ECC混凝土自由收缩分析

Analysis of Free Shrinkage of ECC Concrete

利用有限元分析方法对ECC混凝土进行自由收缩分析,考虑尺寸和钢筋参量对ECC强度的影响。分析结果表明:相同钢筋掺量情况下,随着混凝土强度增加,混凝土内部湿度越大,相同时间内湿度降低量最小;相同混凝土强度下,随着钢筋增量的增加,混凝土内部湿度越大,相同时间内湿度降低量最小。综合来看,混凝土强度对混凝土湿度场影响大于钢筋掺量。

In this paper,free shrinkage analysis of ECC concrete is carried out by Finite Element Analysis method,the influence of size and reinforcement parameters on ECC strength are considered.Analysis results show:Under the same amount of steel reinforcement,with the increase of concrete strength,the greater the humidity inside the concrete,the smallest humidity decrease in the same time;Under the same concrete strength,with the increase of steel reinforcement increment,the internal humidity of concrete increases,and the decrease in humidity is the smallest within the same time.On the whole,the influence of concrete strength on the concrete moisture field is greater than that of steel reinforcement.