Characterization and effective utilization of coal ash as soil stabilization on road application

Ahmad Rifa'i, Noriyuki Yasufuku, Kazuyoshi Tsuji

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Citations (Scopus)

Abstract

Disposed coal ash become environmental important issues and number of production is abundant, and can be considered as waste material if it is not effectively reused or recycled for other application. In engineering practice, utilization of fly ash as additive materials is limited and in small quantity while the fly ash disposal is quite high. The major aim of this paper is to stress the characterization, classification and utilization of coal ash for road application. Also, to prove of coal ash contribution in soil improvement, give benefit in engineering practice and also become as part of engineering material that is environmental friendly. Geotechnical analysis and soil-coal ash mixture characteristics involve physical, mechanical and chemical properties, including environmental aspect are presented. Result shows that effect of addition of fly ash, bottom ash and lime on physical and mechanical properties can improve the index properties of soft clay, increases strength and bearing capacity, as well as decreases swelling potential. Coal ash-soil mixture contains some heavy metal elements, but low concentration values and environmentally acceptable. Finding of the optimum utilization of coal ash as substitution material in sub base and as soil stabilization in sub grade are also discussed.

Original languageEnglish
Title of host publicationGeotechnical Society of Singapore - International Symposium on Ground Improvement Technologies and Case Histories, ISGI'09
Pages469-474
Number of pages6
DOIs
Publication statusPublished - Nov 16 2010
EventInternational Symposium on Ground Improvement Technologies and Case Histories, ISGI'09 - Singapore, Singapore
Duration: Dec 9 2009Dec 12 2009

Publication series

NameGeotechnical Society of Singapore - International Symposium on Ground Improvement Technologies and Case Histories, ISGI'09

Other

OtherInternational Symposium on Ground Improvement Technologies and Case Histories, ISGI'09
CountrySingapore
CitySingapore
Period12/9/0912/12/09

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Rifa'i, A., Yasufuku, N., & Tsuji, K. (2010). Characterization and effective utilization of coal ash as soil stabilization on road application. In Geotechnical Society of Singapore - International Symposium on Ground Improvement Technologies and Case Histories, ISGI'09 (pp. 469-474). (Geotechnical Society of Singapore - International Symposium on Ground Improvement Technologies and Case Histories, ISGI'09). https://doi.org/10.3850/GI025