(1100)--On the fracture parameters of he建筑材料学建筑材料学.pdf

Engineering Fracture Mechanics 219 (2019) 106615 Contents lists available at ScienceDirect Engineering Fracture Mechanics journal homepage: /locate/engfracmech On the fracture parameters of heavy-weight magnetite concrete T with different water-cement ratios through three methods a a b,⁎ Ali Sadrmomtazi , Omid Lotfi-Omran , Iman M. Nikbin a Department of Civil Engineering, University of Guilan, Rasht, Iran b Department of Civil Engineering, Rasht Branch, Islamic Azad University, Rasht, Iran A R T I C L E I N F O A B S T R A C T Keywords: In this research, in order to study the effect of different water to cement ratios (w/c = 0.4–0.7) Heavy-weight concrete on the fracture characteristics of Heavy-weight concrete (HWC), three-point bending tests were Fracture parameters performed on 224 notched beams. Then, the fracture parameters were analyzed by Work of Size effect Fracture Method (WFM), Size Effect Method (SEM) and Boundary Effect Method (BEM). The Brittleness results show that water to cement ratio significantly affects fracture parameters of HWC. The reduction of w/c also decreases the fracture surface, size of the crack tip plasticity zone, length of