CHARACTERIZATION OF TENSILE BEHAVIOR IN UHPFRC THIN SLAB USING NDT METHOD AND DIC SYSTEM

Author(s): Xiujiang Shen and Eugen Brühwiler
Paper category: Proceedings
Book title: Proceedings of the 2nd International Conference on UHPC Materials and Structures (UHPC2018-China)
Editor(s): Caijun Shi and Baochun Chen
ISBN: 978-2-35158-219-0
e-ISBN: 978-2-35158-220-6
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 348-360
Total Pages: 13
Language : English

Abstract: Proper test and analysis methods are necessary for characterizing the tensile behavior of
strain hardening Ultra High Performance Fiber Reinforced Cementitious Composites
(UHPFRC) accurately and representatively. In this paper, the direct tensile tests (DTT) is
applied, and all 5 structural specimens are extracted from a thin slab, representing UHPFRC
layers covering large areas such as bridge decks and slabs or thin elements. Before processing
the slab, the non-destructive test (NDT) using magnetic probe is applied to detect the local
fiber content and orientation distribution of each specimen, and sequentially, predicting the
tensile strength individually. For DTT, each specimen is strengthened on both ends using
aluminum plates, and built-in the testing machine. By means of digital image correlation (DIC)
system, the development/distribution of multiple micro-cracks and fictitious cracks of
UHPFRC can be investigated visually and the propagation of each fictitious crack can be
monitored from early formation until final failure.

Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00