Kwan University, .. ....,..,.i:;;.., .... J.n.,._,.., of mortar-aggregate interface are .... LJ ...... o.A ..... disk specimens. It is observed fracture increases with mortar strength and the roughness surface strongly influence interfacial fracture aggregate type does not. It is found…
Kwan University, .. ....,..,.i:;;.., .... J.n.,._,.., of mortar-aggregate interface are .... LJ ...... o.A ..... disk specimens. It is observed fracture increases with mortar strength and the roughness surface strongly influence interfacial fracture aggregate type does not. It is found that toughness considerably increases time. mortar-aggregate interface, fracture toughness curves, ..... i;:;.. ............. ,""-'· ...., .................... age concrete materials is extensive, geometrically weak zones the concrete Mortar-aggregate interlaces play a major role the fracture concrete composites. Also, the interfacial properties concrete as fracture energy. Characterization interfacial properties is, therefore, essential to overcome limitations associated with interfaces. toughness of mortar-aggregate interface by such factors as the mortar strength and age, roughness of aggregate surface. In this study testing sandwiched Brazilian disk specimens assess fracture toughness under mixed 2 Fracture Modulus Mismatch Parameter Concrete can be considered as a composite ...,,__,,, ... _, ... ,u._ ........ r-. aggregate inclusions. The important between mortar matrix aggregates 1969): a -Ea {3= 1 µm(I-2vJ-µa(l-2Vm) +Ea 2 µm (l- VJ+µ" (1- Vm) E = E /(1-v 2) = 2µ/(1-v), and E, µ, shear modulus, and Poisson's ratio, respectively; to mortar and aggregate, respectively.