Experimental Investigation on Shear performance of RC beams with UHTCC layer in tension zone
- 10.2991/ifeesm-17.2018.67How to use a DOI?
- UHTCC/RC composite beam, shear performance, interfacial debonding, crack width, cracking pattern
Ultra-high toughness cementitious composite (UHTCC) macroscopically exhibits tensile strain hardening characteristic and excellent crack control ability due to steady development of multiple fine cracks, and therefore can be regarded as a promising repair material. Shear tests were conducted on RC beams repaired in tension zone with four different thicknesses of UHTCC layers to investigate the influence of ductile UHTCC layer on composite shear behavior of RC beam. It was found that the tested UHTCC/RC composite beams showed at least 40% higher shear capacity compared to the control RC beam and the UHTCC layer thickness has little influence on shear capacity. However, a strong influence was presented between UHTCC lay thickness and diagonal crack width. As long as the serious interface delamination developing into the supports zone was avoided, the smaller diagonal crack width can be obtained in UHTCC/RC composite beam. And importantly, the provision of the densely-spaced stirrups in the composite beam was not effective in preventing the occurrence of interface debonding between UHTCC and concrete layer.
- © 2018, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Xiufang Zhang AU - Ruiqiang Liu AU - Shaopeng Guo PY - 2018/02 DA - 2018/02 TI - Experimental Investigation on Shear performance of RC beams with UHTCC layer in tension zone BT - Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017) PB - Atlantis Press SP - 355 EP - 360 SN - 2352-5401 UR - https://doi.org/10.2991/ifeesm-17.2018.67 DO - 10.2991/ifeesm-17.2018.67 ID - Zhang2018/02 ER -