大连理工大学学报2011，Vol.51Issue(5)：694-700,7.
高强高性能细粒混凝土断裂特性研究
Research on fracture characteristics of high-performance fine grained concrete with high-strength
摘要
Abstract
Textile reinforced concrete （TRC） has excellent ductility and crack resistance, directionalreinforcing capability and thin wall and light weight. For the fine grained concrete used for the matrix of TRC, its basic fracture characteristics and mechanical properties, which are different from those of ordinary concrete, need to be determined. Therefore, its fracture characteristics were investigated with the three-point bending tests using various sizes of notched beams. The experimental results show that there also exists a steady crack propagation stage before unstable fracture of fine grained concrete during its fracture process, and the unstable fracture toughness does not change, but with the increase of beam depth, the initial fracture toughness decreases. After the tail of the loaddeflection curve is modified, the fracture energy obtained almost does not have size effect and therefore it may be considered as a material parameter.关键词
细粒混凝土/断裂韧度/断裂能/尺寸效应Key words
fine grained concrete/fracture toughness/fracture energy/size effect分类
建筑与水利引用本文复制引用
尹世平,徐世烺..高强高性能细粒混凝土断裂特性研究[J].大连理工大学学报,2011,51(5):694-700,7.基金项目
基金项目：国家自然科学基金资助项目（重点项目50438010）. （）
