A state-of-the-art review on the size effect of concretes and concrete structures (Ⅰ): concrete materials
Du Xiuli1 Jin Liu1 Li Dong1,2
1. Key Laboratory of Urban Security and Disaster Engineering, Beijing University of Technology, Beijing 100124, China;
2. Tsinghua University, Beijing 100084, China
Abstract：The so-called size effect is understood as any dependence of nominal strength on the structural size. The efforts on the size effect of concrete structures have fallen into two major aspects, 1) size effect of concrete materials, and 2) size effect of reinforced concrete members. The present study deals with the former, that is, the size effect of concrete materials. Some widely used laws for size effect of concrete materials are assessed, and the experimental and numerical efforts on the size effect of concrete materials are then introduced. At last, some suggestions are provided for the existing problems and future developments. Generally, establishing a global law of size effect for full-scale concrete, based on fracture mechanics in conjunction with the randomness of material strength and the fractal characteristic of cracks, is the subsequent research target. Furthermore, the size effect tests and the simulations with a larger range of sizes shall be conducted to validate and extend the new theory of size effect.
杜修力 金浏 李冬 . 混凝土与混凝土结构尺寸效应述评(Ⅰ)：材料层次[J]. 土木工程学报, 2017, 50(9): 28-45.
Du Xiuli Jin Liu Li Dong. A state-of-the-art review on the size effect of concretes and concrete structures (Ⅰ): concrete materials. 土木工程学报, 2017, 50(9): 28-45.
