Characterization of the Non-uniform Deformation and Crack in Concrete with 3D Digital Image Correlation

Author(s): Yang Chen, Jiangxiong Wei, Wen Jin and Qijun Yu
Paper category: Proceedings
Book title: 3rd International RILEM Conference on Microstructure Related Durability of Cementitious Composites
Editor(s): Changwen Miao, Wei Sun, Jiaping Liu, Huisu Chen, Guang Ye and Klaas van Breugel
Print-ISBN: 978-2-35158-188-9
e-ISBN: 978-2-35158-189-6
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 89-104
Total Pages : 16
Language : English

Abstract: Time-dependent deformation of mortar and concrete with differential sizes aggregates were determined with 3D digital image correlation (3D-DIC). Local strain and crack in concrete were analyzed. The results show that 3D-DIC make it possible to measure full-field non-uniform internal displacement/strain initiated by shrinkage. Before 1 day both the displacement and non-uniform strain increased with time. While local displacement become discontinuous and expansive strain was observed when strain arrive a certain value where a crack was found. Coarse aggregates exhibit the excellent ability to block the local deformation. But have little influence on total deformation of samples. After 3 days some Cracks were found close to aggregate. Most of them were vertical to aggregate.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00