不同类型混凝土断裂特性研究

Study on the fracture properties of different type concretes

通过对国内外现有7种断裂模型的分析总结,结合我国实际国情,引出了由我国学者徐世教授提出的双K断裂模型,参照我国《水工混凝土断裂试验规程》给出的两种常见断裂测试试验方法(楔入劈拉法和三点弯曲梁法)中起裂断裂韧度和失稳断裂韧度的计算过程,总结前人的研究成果,详细介绍了普通混凝土、钢筋混凝土、碾压混凝土、纤维混凝土4种常见混凝土的断裂性能。

Through research review of seven kinds of fracture models which are existing both at home and abroad, combined with realistic situation in China, Double-K fracture model is raised which was advanced by Chinese scholar Prof.XU Shi-lang.Depending on the calculation methods of fracture experiments （wedge splitting method and three-point bending beam method） which are introduced in Norm for Fracture Test of Hydraulic Concrete in China,for initiation toughness and unstable toughness.Review the former research,the concrete fracture properties of normal concrete, reinforced concrete, roller compacted concrete, fiber reinforced concrete are described in detail.