EXPERIMENTAL STUDY ON PROPERTIES OF STRENGTH AND DEFLECTION FOR STEEL FIBER REINFORCED SELF-COMPACTING CONCRETE AT EARLY-AGE

摘要：

Based on some tests about the relationship between the age and the compressive strength, fracture ability, the properties of steel fiber reinforced self-compacting concrete(SFRSCC) are studied. Test ages are 12hours, 24hours, 3, 7 and 28 days. Based on the force-deflection relationship obtained from the three point bending notched beam tests, the stress-crack opening relationship of the SFRCC (σ-w trilinear diagram) was determined, the influence of distinct stages on the fracture parameters was analyzed by using the FEM methods. The results indicate, steel fiber increased the compressive strength of self-compacting concrete, the strength and Youngs modulus would increase with the SFRSCC age. The post-peak strength value decreased sharply with the age. The trilinear diagram could express exactly the developments of force-displacement.

关键词： steel fiber self-compacting concrete compressive strength bending ability

作者: Gui-feng LIU Zheng-fa CHEN

作者单位: Shandong University of Technology,China Shandong University of Technology, China

会议类型: 国际会议

会议名称: The 3rd International Conference on The Concrete Future(第三届混凝土未来国际会议)

会议地点: 烟台

会议语种:英文

页码: 251-256

在线出版日期: 2008-10-17（万方平台首次上网日期，不代表论文的发表时间）