Size Effect Analysis of Recycled Concrete Fracture based on Micromechanics Using the Base Force Element Method

摘要：

　　In this paper,the base force element method (BFEM) on damage mechanics is used to analyze the fracture properties of recycled aggregate concrete (RAC) on meso-level.The recycled aggregate concrete is taken as five-phase composites consisting of natural coarse aggregate,new mortar,new interfacial transition zone( ITZ),old mortar and old ITZ on meso-level.The random aggregate model is used to simulate the meso-structure of recycled aggregate concrete.The size effects of mechanics properties of RAC under uniaxial tension loading are simulated using the BFEM on damage mechanics.The simulation results agree with the test results.This analysis method is the new way for investigating fracture mechanism and numerical simulation of mechanical properties for recycled aggregate concrete.

关键词： Base force element method (BFEM) Micromechanics Fracture property Size effect Recycled aggregate concrete (RAC)

作者: Yijiang Peng Nana Dang Lijuan Zhang Jiwei Pu

作者单位: Department of Civil Engineering,Beijing University of Technology,Beijing 100124,China

会议类型: 国际会议

会议名称: 第13届国际断裂大会(ICF2013)

会议地点: 北京

会议语种:英文

页码: 1-10

在线出版日期: 2013-06-16（万方平台首次上网日期，不代表论文的发表时间）