4TH International Congress on Technology - Engineering & SCIENCE - Kuala Lumpur - Malaysia (2017-08-05)

Crack Propagation In Sccd Concrete Specimen Experimental And Numerical Analysis
No matter of using underground facilities or structures on the ground for the purpose of conducting daily human activities, materials has been playing an important role. Especially the increase of using human-made materials for underground facilities requires engineers having sufficient knowledge of brittle material mechanisms. Moreover, fracturing is a failure mechanism of brittle materials that is of great importance to their performance of underground facilities. Hence, to understand crack growth becomes very essential for assessing the stability of brittle materials and for the safety design of the concrete. The aim of this paper is to investigate the fracture toughness and the crack mouth displacements in order to observe the crack mechanism in a concrete specimen. The semi-circular chevron disk (SCCD) specimens with various inclined notch crack angles were used in experimental studies. The maximum recorded ultimate load was obtained with the specimen with 60° inclined edge crack. In general, the failure load was found increasing with increasing notch crack inclination angle.
Xiaoqing Lu, Guanxi Yan