定向钢纤维混凝土的制备方法以及断裂性能研究进展

Review on Preparation Methods and Fracture Properties of Aligned Steel Fiber Reinforced Concrete

摘要:

对定向钢纤维混凝土（ASFRC）制备方法、纤维分布特性、断裂性能进行了系统阐述。分析总结了制备ASFRC常用方法各自的特点与适用性，概括总结了钢纤维分布特性参数的确定方法，详细论述了不同因素对钢纤维分布产生的影响。参照ASFRC断裂性能的试验方法与技术标准，分析总结了常见的弯曲断裂试验及断裂指标。同时，在钢纤维混凝土断裂性能已有的研究基础上，归纳总结了ASFRC断裂性能的影响因素与断裂模拟现状。最后基于现有成果对ASFRC的可能研究方向进行了展望。

Abstract:

This paper systematically elaborated the preparation method， fiber distribution characteristics， and fracture properties of directed steel fiber reinforced concrete （ASFRC） in combination with research achievements in recent years. It compared and introduced the characteristics and applicability of different methods for preparing ASFRC. By summarizing varieties of methods for determining the parameters to describe the distribution characteristics of steel fibers， it discussed the influence of different factors on the distribution of steel fibers in detail. Referring to the test method and technical standard of ASFRC fracture performance， it compared different fracture indices obtained from bending fracture tests and results. Meanwhile， it summarized the influencing factors and fracture simulation based on the existing research on the fracture properties of ASFRC. Finally， it prospected the possible research directions of ASFRC.