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http://dx.doi.org/10.14190/JRCR.2016.4.4.454

An Experiment on Bond Behaviours of Reinforcements Embedded in Geopolymer Concrete Using Direct Pull-out Test  

Kim, Jee-Sang (Department of Civil Engineering, Seokyeong University)
Park, Jong-Ho (DM Engineering Co., Ltd.)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.4, no.4, 2016 , pp. 454-462 More about this Journal
Abstract
Geopolymer concrete is a new class of construction materials that has emerged as an alternative to ordinary Portland cement concrete to reduce the emission of $CO_2$ in the production of concrete. Many researches have been carried out on material developments of geopolymer concrete, however a few studies have been reported on the structural use of them. This paper presents an experiment on the bond behaviors of reinforcements embedded in fly ash based geopolymer concrete. The development lengths of reinforcement for various compressive strength levels of geopolymer concrete, 20, 30 and 40 MPa, and reinforcement diameters, 10, 16 and 25 mm, are investigated. Total 27 specimens were manufactured and pull-out test according to EN 10080 was applied to measure the bond strength and slips between concrete and reinforcements. As the compressive strength levels of geopolymer concrete increase, the bond strength between geopolymer concrete and reinforcement increase. The bond strengths decrease as the diameters of reinforcements increase, which is similar in normal concrete. Also, an estimation equation for the basic development length of reinforcement embedded in geopolymer concrete is proposed based on the experimental results in this study.
Keywords
Geopolymer concrete; Bond-slip behaviour; Direct pull-out test; Bond stress;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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