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http://dx.doi.org/10.11112/jksmi.2015.19.2.170

Evaluation of Flexural Performance of Eco-Friendly Alkali-Activated Slag Fiber Reinforced Concrete Beams Using Sodium Activator  

Ha, Gee-Joo (경일대학교 건축공학과)
Yi, Dong-Ryul (경일대학교 건축공학과)
Ha, Jae-Hoon (사)건설기술정책연구원)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.19, no.2, 2015 , pp. 170-178 More about this Journal
Abstract
In this study, it was developed eco-friendly alkali-activated slag fiber reinforced concrete using ground granulated blast furnace slag, alkali activator (water glass, sodium hydroxides), and steel fiber. Eight reinforced concrete beam using alkali-activated slag concrete were constructed and tested under monotonic loading. The major variables were mixture ratio of alkali activator, mixed/without of steel fiber. Experimental programs were carried out to improve and evaluate the flexural performance of such test specimens, such as the load-displacement, the failure mode, the maximum load carrying capacity, and ductility capacity. All the specimens were modeled in scale-down size. The reinforced concrete beams using the eco-friendly alkali-activated slag fiber reinforced concrete was failed by the flexure or flexure-shear in general. In addition, the maximum strength increased with the adding the mol of sodium hydroxide, and the specimen reinforced the steel fiber showed the value of maximum strength which is increased by 15.8% through 25.9%. It is thought that eco-friendly alkali-activated slag fiber reinforced concrete can be used with construction material and product to replace normal concrete. If there is applied to structures such as precast concrete member and production of 2nd concrete product, it could be improved the productivity and reduction of construction duration etc.
Keywords
Alkali-activated slag; Alkali activator; Fiber reinforced concrete; Flexural performance;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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