Effects of fiber curvature on the microstructure of the interfacial transition zone in fresh concrete

摘要: The study on the interfacial transition zone (ITZ) of concrete has received lots attention in last decade. However, no information is available influence curvature a rigid surface microstructure ITZ. This paper employed computer simulation technology to fiber initial ITZ concrete. For sake simplification, investigation was first focused mono-size spherical particle packing system around cylindrical with different diameters. An algorithm serial sectioning developed. curve solid volume fraction versus distance used as parameter characterize Then, ratio diameter ITZ’s studied. These curves were compared ones from flat aggregate which particles packed. Furthermore, multi-size further investigated. results demonstrate that matter whether or multi-size, fresh irrelevant fiber. shape similar surface. In all cases, horizontal coordinates peak are located at half mean weight particles. thickness reduces slightly decrease water/cement ratio. Therefore, one may use represent state, and vice versa.