纤维增强混凝土中纤维分布表征及调控的研究进展  

Research process of characterizat ion and cont rol methods of fiber dist ribut ion in fiber reinforced concrete

作　　者：李长风[1] 刘加平[1] 刘建忠[1] 阳知乾[1] 崔巩[1] 

机构地区：[1]江苏省建筑科学研究院有限公司高性能土木工程材料国家重点实验室,江苏南京210008

出　　处：《混凝土》2014年第7期108-113,共6页Concrete

基　　金：国家自然科学基金青年基金(50908104);江苏省自然科学基金(BK2011835)

摘　　要：纤维分布是影响纤维增强混凝土新拌性能和工作性能的重要因素。综述了纤维增强混凝土中纤维分布的表征方法、理论研究及调控技术。首先从间接测试和直接测试两个角度出发,深入描述了现有的纤维分布的试验表征方法,并分析了各自的优缺点及适用范围;其次,评述了随机状态和真实情形下纤维取向分布的理论推导及预测方法;最后,重点介绍了纤维分布的影响规律及调控技术,并提出现阶段需解决的关键问题及展望。Fiber distribution is an important factor affecting the workability and mechanical properties of fiber reinforced concrete. It reviews the characterization methods, theoretical derivation and control methods of fiber distribution in fiber reinforced concrete. First, experimental characterization methods of fiber distribution are described in details through indirect test and direct test; the advantages and disadvantages, the applicable scope of each method are analyzed. Second, theoretical derivation and prediction methods of fiber in random state and real situation are reviewed. Last, influence and control methods of fiber distribution are described, and the existed problems to be solved in the further study of fiber distribution are proposed.

关 键 词：混凝土 纤维分布 表征方法 理论研究 调控技术 

分 类 号：TU528.041[建筑科学—建筑技术科学]