PASSING ABILITY OF SELF-COMPACTING STEEL FIBRE REINFORCED CONCRETE

摘要：

The size of the components of self-compacting fibre reinforced concrete(SCFRC)relative to the bar spacing affects the passing ability.To be most effective in the hardened state,fibres have to be larger than the aggregates.Usually,the optimum fibre length is 2-4 times that of the maximum aggregate size.This aspect has to be taken into account when designing structural elements cast with self-compacting fibre reinforced concrete(SCFRC).In an experimental study the effect of the mixture composition,the type and the content of the steel fibres on the minimum bar spacing required to counteract blocking was studied.The J-ring in combination with the slump flow test was applied to determine the bar spacing at which blocking occurs.Based on the results,a model is developed that allows predicting the minimum bar spacing for SCFRC.It takes into account the content and the characteristics of the steel fibres and the aggregates.

作者: Steffen Gr(u)newald Joost C.Walraven

作者单位: Department of Structural and Building Engineering,Delft University of Technology,The Netherlands

会议类型: 国际会议

会议名称: 第一届自密实混凝土设计、性能及应用国际研讨会(1st International Symposium on Design,Performance and Use of Self-Consolidating Concrete SCC2005-China)

会议地点: 长沙

会议语种:英文

页码: 293-300

在线出版日期: 2005-05-26（万方平台首次上网日期，不代表论文的发表时间）