Experimental and numerical studies on the bond stress between steel bars and ultra-high performance concrete containing nano-silica

Joint Event on 5^th World Congress and Exhibition on Construction and Steel Structure & World Congress on Concrete Structures & Concrete Technology

October 05-06, 2018 | Los Angeles, USA

Ahad Amini Pishro and Xiong Feng

Western China Earthquake and Hazards Mitigation Research Center, Sichuan University, China

Posters & Accepted Abstracts: J Civil Environ Eng

Abstract :

An experimental test including 144 specimens based on RILEM standards was conducted by using Pullout test method considering steel reinforcing bars of No. 16 and 18, increasing Nano-silica contents from 0% to 6.5% by weight of cement, conventional and thermal curing methods, the bond lengths and concrete coatings of d_b, 2d_b and 3d_b to analyze the bond stress between Ultra High Performance Concrete (UHPC) and steel bars. In order to complete the research, 16 experimentally tested and 39 non-tested specimens were modeled using ABAQUS by taking into account additional parameters such as development length and concrete coating of 4d_b and bar diameters of 12, 14, and 20mm. We finally proposed a comprehensive Local Bond Stress (LBS) equation to calculate the local bond stress between steel bars and UHPC containing nano-silica.

Biography :

E-mail: ahad.aminipishro@yahoo.com