MICRO-CRACK DEVELOPMENT IN MORTARS, PART 1: FRACTURE EXPERIMENTS AND CT-SCAN OBSERVATIONS

摘要：

This paper describes a method to measure the 3D-microstructure of a material which can be used to perform fracture simulations.A model concrete is made and the 3D structure is obtained with a CT-scanner.Uni-axial tensile tests are performed on cylindrical specimens of the model concrete and of a mortar.The model concrete shows more micro-cracking,a more tortuous crack path,a lower tensile load and a less brittle behaviour compared to the mortar.Furthermore it is found that the opening of the crack is more uniform when the material is more heterogeneous.

关键词： Mortar Tensile Test CT-Scan Fracture Softening

作者: E.Schlangen G.Timmers A.Thijssen

作者单位: Delft University of Technology,Faculty of Civil Engineering and Geosciences,Microlab,P.O.Box 5048,2600 GA,Delft,The Netherlands.

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 1280-1283

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）