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A study on the ecological lightweight aggregates made of bottom ashes and dredged soils  

Jeon, Hye-Jin (Department of Materials Engineering, Kyonggi University)
Kim, Yoo-Taek (Department of Materials Engineering, Kyonggi University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.17, no.3, 2007 , pp. 133-137 More about this Journal
Abstract
Ecological lightweight aggregates were made in order to recycle the dredged soils from the seaside construction area and the bottom ashes from the power plant. Various physical and chemical analysis were performed on them to identify their possibility for applying lightweight concrete fields. Lightweight aggregates were made of bottom ashes and dredged soils from Yongheung Island which is located 20km west away from Seoul, and all the raw materials were milled before mixing. The physical and chemical properties such as density, absorption rate, stability, alkali latency reaction, heavy metal leaching of the lightweight aggregates were tested and analysed by following the KS standard procedures. From the size analysis, the coarse aggregates showed a suitable fit on standard particle ranges; however, the fine aggregates showed a large deviation from the standard. The absorption rates were increased with decreasing weight of the aggregates. All the aggregates were turned out to be safe by the stability and heavy metal leaching test; however, some of the aggregates were confirmed on the border of harmless and possibly harmful region through the alkali latency reactivity test.
Keywords
Ecological lightweight aggregates; Bottom ashes; Dredged soils; Lightweight concrete;
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  • Reference
1 Information personally obtained from Korea Namdong Electrics in 2006
2 KS F 2503 Absorption Rate and Density Test Method for Fine Aggregates
3 KS F 2507 Stability Test Method for Aggregates
4 J. Lee, 'Co-relation of leaching properties of heavy metals on nano particle with colloid/interface variables', (2006) master thesis, Kyonggi University Graduate School, pp. 35-39
5 KS F 2523 Terms and Definition of Aggregates
6 J.H. Lee, J.H. Shim, J.H. Kim, S.P. Kang, S. Choi and M.H. Kim , 'A study on the strength properties of concrete containing bottom ash as a part of fine aggregate', Journal of the Architectural Institute of Korea 21 (2001) 359
7 KS F 2504 Absorption Rate and Density Test Method for Fine Aggregates
8 KS F 2502 Sieving Test Method for Fine and Coarse Aggregates
9 G.L. Yoon and H.Y. Jo, 'Recycling strategies and case histories of dredged soils', Korean Geo-Environmental Society 3 (2002) 48
10 KS F 2545 Alkali Potential Reaction Test Method for Aggregates
11 M. Song, J.B. Jang, B.S. Cho, J.H. Kim, Y.R. Kim and M.H. Kim, 'An experimental study on propertiws of mortar using bottom ash produced in power plant', Journal of the Architectural Institute of Korea 23 (2003) 203
12 D. Kim, J.W. Lim and N.W. Linm, 'A Study on the physical properties of cement mortar with use of bottom ash dumped at an ash pond of the electrical coal power station', Korean Society of Waste Management (2004) 69