Abstract
Mechanical behaviour of concrete is highly dominated by cracking.Because of the heterogeneity, a large fracture process zone is created along the main crack surface.In this paper, the influence of coarse aggregate size on the fracture energy of concrete was experimentally studied and discussed in connection with the tension softening properties of the fracture process zone.Three dimensional source location analysis of acoustic emission (AE) was also carried out to observe the prospect of the fracture process zone.The properties in the distribution of AE source location coincide with the results of the numerical analyses.
