Browse > Article

Manufacturing artificial lightweight aggregates using coal bottom ash and its application to the lightweight-concretes  

Kim, Kang-Duk (Department of Materials Engineering, Kyonggi University)
Kang, Seung-Gu (Department of Materials Engineering, Kyonggi University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.18, no.5, 2008 , pp. 211-216 More about this Journal
Abstract
The artificial lightweight aggregate (ALA) was manufactured in a rotary kiln at $1125^{\circ}C$ using green body formed by pelletizing the batch powder composing of coal bottom ash (CBA) produced from power plant, clay and dredged soil (DS). The TCLP (Toxicity characteristic leaching procedure) results showed that the dissolution concentration of heavy metal ions of ALA fabricated in this study was below the limitation defined by the enforcement regulations of wastes management law in Korea. The ALA containing 60$\sim$70 wt% CBA had a bulk density of 1.45$\sim$1.49 and a water absorption of 17.2$\sim$18.5 %. The impact values for oven-dry state and saturated-surface dry state of ALA were 27.4$\pm$1.3 and 23.4$\pm$2.6 % respectively. The 28-days compressive strength of concrete made with various ALA was $22.7\sim27.8 N/mm^2$. The slump of concrete with ALA containing CBA 60 and 70 wt% were 7.9 and 14.3 cm respectively. The unit weight of concrete made with any ALA fabricated in this study was satisfied with the standard specifications of lightweight concrete for the civil engineering and construction presented by Korea as below $1.84 ton/m^3$.
Keywords
Artificial lightweight aggregates; Coal bottom ash; Dredged soil; Lightweight concrete; Impact value;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Y.I. Koh, H.T. Kim and J.H. Noh, "Consideration on utilization of coal ash mixed with fine particle as drain materials for soft ground", Kor. Geo-Enviro. Soc. Workshop (2005) 69
2 G.L. Yoon, C.W. Lee and W.S. Jeong, "Korean environmental standards for beneficial use of dredged materials", J. of the Korean Geotechnical Soc. 24(5) (2008) 5
3 KS F 2581; Testing method for determination of aggregates impacting value-Method of test for production control of aggregates, Korean Standards Association (2003)
4 Architectural Institute of Korea, "Standard specification of building construction", Kimundang, Korea (2006)
5 K.D. Kim and S.G. Kang, "Manufacturing artificial lightweight aggregates using coal bottom ash and clay", J. Kor. Cry. Growth & Cry. Tech. 17(6) (2007) 277   과학기술학회마을
6 F. Canpolat, K. Yilmaz and M.M. Kse, "Use of zeolite, coal bottom ash and fly ash as replacement materials in cement production", Cem. & Conc. Res. 34 (2004) 731   DOI   ScienceOn
7 S.J. Park, J.D. Lim and S.H. Park, "Study of monitoring for change of marine environment by dumping dredged materials", J. of the Kor. Soc. Marin Enviro. & Safety (2007) 15
8 C. Kang, K.W. Kang, E.G. Kawg and G.C. Jung, "Site application of the light weight foamed concrete partition wall using bottom ash", Proceeding of Architectural Institute of Kor. 25(1) (2005) 369
9 O. Ozkan, I. Yuksel and O. Muratoglu, "Strength properties of concrete incorporating coal bottom ash and granulated blast furnace slag", Waste Management 27 (2007) 161   DOI   ScienceOn
10 Korea concrete institute, "New Concrete Engineering" Kimundang, Korea (2007)
11 S.S. Kim, B.I. Kim, S.J. Han and H.Y. Shin, "Strength characteristics of light-weighted soils mixed with EPS and dredged soils", J. of Kor. Soc. for Railway 5(2) (2002) 61
12 Y.T. Kim, Y.K. Kwon and H.J. Kim, "Comparison of compressive behavior characteristics between un-reinforced and reinforced lightweight soils for recycling of dredged soils", J. of Ocean Eng. & Tech. 19(6) (2005) 44