American Society of Civil Engineers


Influence of Steel Fibers and Headed Bars on the Serviceability of High-Strength Concrete Corbels


by Jun-Mo Yang, (Senior Researcher, Research Institute of Industrial Science and Technology, POSCO Global R&D Center, 180-1 Songdo-Dong, Yeonsu-Gu, Incheon, 406-840, Korea; formerly, Doctoral Candidate, School of Civil, Environmental and Architectural Engineering, Korea Univ., 1, 5-ga, Anam-dong, Seongbuk-gu, Seoul, 136-701, Korea. E-mail: junmo.yang@rist.re.kr), Joo-Ha Lee, (Senior Researcher, Research Institute of Technology, Samsung C&T Corporation, 1321-20, Seoch2-dong, Seocho-gu, Seoul, 137-857, Korea. E-mail: jooha1.lee@samsung.com), Young-Soo Yoon, M.ASCE, (Professor, School of Civil, Environmental and Architectural Engineering, Korea Univ., 1, 5-ga, Anam-dong, Seongbuk-gu, Seoul, 136-701, Korea. E-mail: ysyoon@korea.ac.kr), William D. Cook, (Research Engineer, Dept. of Civil Engineering and Applied Mechanics, McGill Univ., 817 Sherbrooke St. W., Montréal, PQ, Canada H3A 2K6. E-mail: bill.cook@mcgill.ca), and Denis Mitchell, (corresponding author), M.ASCE, (Professor, Dept. of Civil Engineering and Applied Mechanics, McGill Univ., 817 Sherbrooke St. W., Montréal, PQ, Canada H3A 2K6. E-mail: denis.mitchell@mcgill.ca)

Journal of Structural Engineering, Vol. 138, No. 1, January 2012, pp. 123-129, (doi:  http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0000427)

     Access full text
     Purchase Subscription
     Permissions for Reuse  

Document type: Technical Note
Abstract: Vertical loading tests are reported for six double-sided, high-strength concrete corbel specimens. The primary variables of the investigation were the percentage of steel fibers and the anchorage method of the main tension tie. The test results indicated that performance in terms of load-carrying capacities, stiffness, ductility, and crack width was improved, as the steel fibers were added and the percentage of steel fibers was increased. The corbel specimens with headed bars used as the main tension-tie reinforcement showed superior load-carrying capacities, stiffness, and ductility compared with the corbel specimens in which the main tension ties were anchored by welding to the transverse bars. From the test results, it is expected that the load-carrying capacities, serviceability, and durability of high-strength concrete corbels would be improved by using steel fibers and headed bars. Experimental results presented were also compared with various prediction models.


ASCE Subject Headings:
Steel fibers
High-strength concrete
Serviceability
Vertical loads
Load tests

Author Keywords:
Corbels
Steel fibers
Headed bars
High-strength concrete
Serviceability