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http://dx.doi.org/10.14190/JRCR.2015.3.1.015

Analysis of Fundamental Properties of Concrete Using Mix of Coarse Aggregate With Formation Causes  

Noh, Sang-Kyun (Building Environment Materials Center, KCL)
Kim, Young-Hee (Technical Research Center, KMB)
Kim, Jeong-Bin (Research & Development Center, Sampyo Industry)
Han, Cheon-Goo (Department of Architectural Engineering, Cheongju University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.3, no.1, 2015 , pp. 15-21 More about this Journal
Abstract
Recently, attempts of replacing some of natural aggregate with mix of low quality aggregate are carried out for stable supply of aggregate. However, low quality aggregate such as recycled aggregate produced during the disposal process of construction wastes and by-product aggregate produced by industrial activities has problem of failing to comply to KS Standards. Therefore, we have compared fundamental properties of concrete by using granite crushed aggregate, recycled aggregate, blast furnace and electric arc furnace slag aggregate for effective utilization of lacking aggregate resources. As the result, slump in case of mixed use of aggregate was increased 0~10% compared to single use. Therefore, it is judged to be economically advantageous as it can expect effects in unit quantity or reduction of SP agent. Compressive strength in case of mixed use of aggregate was increased 0~10% compared to single use as it filled internal crevice of concrete with continuous particle size distribution. Accordingly, if we utilize by satisfying standard particle scope through mix of aggregate with different cause of formation in proper ratio, it was possible to confirm utility of mixed aggregate with demonstration of effects of increases of fluidity and compressive strength of concrete.
Keywords
Granite crushed aggregate; Recycled aggregate; Blast-furnace slag aggregate; Electric Arc furnace oxidizing slag aggregates; Mixed aggregate;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 KICM. (2005). Development of Technology to Improve the Quality of Concrete Using Substitute Aggregates, Korea.
2 Kim, K.H. (2005). Quality Improvement of Crushed Sands Concrete Considering Blending Method of Aggregate, M.D Thesis, Cheongju University, Korea.
3 Ryu, D.H., Kim, K.H., Park, C.K., Son Y.S. (2009). The Study of Concrete Basic Properties Using Oxidized Electricfurnace- slag Aggregate, Journal of Architectural Institute of Korea, 25(8), 143-150.
4 Yang, K.H., Kim, Y.S. (2005). An Evaluation of Slump Loss for Elapsed Time and Mechanical Behavior of the Recycled Aggregate Concrete Mixed with Blast-Furnace Slag. Journal of Architectural Institute of Korea, 21(40), 117-124.