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http://dx.doi.org/10.14190/JRCR.2021.9.1.109

The Mechanical Properties of SMA Concrete Mixture Using Steel Slag Aggregate  

Kim, Hyeok-Jung (Industry-Academic Cooperation Foundation, Hankyong National University)
Na, Il-Ho (Construction Materials Headquarters, Korea Petroleum Industries)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.9, no.1, 2021 , pp. 109-116 More about this Journal
Abstract
In order to replace mineral aggregate used as road pavement materials with steel slag aggregate, this present study evaluated mechanical properties of SMA Concrete mixtures using steel slag aggregate as oxidized slag from electric furnace in iron works. The variables of this experiment are the aggregate type of mineral and steel slag and the sieve sized of 10mm and 13mm. The physical properties inclu ding the specific gravity and absorption rate etc. of the slag aggregate mixtu res satisfied the KS standard as asphalt mixtu re. As a resu lt of evalu ating the mechanical properties of the asphalt mixtures, the optimum asphalt content of the slag aggregate mixtures were lower than that of the mineral aggregate mixtures, but other quality standards were all satisfied. In the deformation strength evaluation, the slag aggregate mixtures were measu red slightly higher than that of the mineral aggregate mixtu res, and the dynamic stability test satisfied the 2,000pass/mm standard value in all specimens. And, the moduli of resilient of the slag aggregate mixtures showed an improved value compared with the mineral aggregate mixtures. Therefore, as the resilient rate of the slag aggregate mixtures improved, it is speculated that there will be an effect of improving public performance according to the repeated traffic load of the vehicle.
Keywords
Steel slag aggregate; Stone mastic asphalt; Deformation strength; Wheel tracking; Modulus of resilient;
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Times Cited By KSCI : 1  (Citation Analysis)
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