An evaluation of fly ash-overburden rock mixtures for a cover layer to prevent acid mine drainage generation in overburden dump

G. J. Kusuma, H. Shimada, R. S. Gautama, K. Matsui, C. H. Saputra

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

1 Citation (Scopus)

Abstract

Utilizing the fly ash (FA) for environmental applications, such as for hazardous waste barrier materials, is one of the common alternative of FA utilization due to its several advantages, both on the chemical and the geotechnical view. However, the FA has a range variety of characteristics and tend to be site specific which depends on the coal source quality and the coal burning condition. Hence, an evaluation of the geotechnical properties of FA is needed to be conducted prior to its utilization in a specific application such as an additional mixture material in a barrier material to encapsulate the sulfide containing rock in an overburden dump, in which the stability and the integrity of the dump are the main issues that have to be maintained from a geotechnical point of view. The objectives of this research are to (i) characterize the engineering properties of FA and two types of overburden rock as well as its several mixture compositions; (ii) evaluate the properties of the FA-overburden mixtures as a barrier material candidate; and (iii) determine the most appropriate composition of material mixtures that provides a high degree of confidence in achieving an acceptable design criterion as a barrier layer. In order to address these objectives, several laboratory tests such as the consistency limit test, compaction test, and hydraulic conductivity test have been done on several compositions of FA-overburden rock mixture as well as the oxygen diffusion potency. The study concludes; is was that the 10 % w/w content of the FA in the material mixture is the maximum FA addition to achieve the recommended properties of the material mixture for an encapsulation purpose of the sulfide-containing overburden rock.

Original languageEnglish
Title of host publicationISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014
Editors Kaneko, Kodama, Shimizu
PublisherInternational Society for Rock Mechanics
Pages1532-1539
Number of pages8
ISBN (Electronic)9784907430030
Publication statusPublished - Jan 1 2014
Event8th Asian Rock Mechanics Symposium, ARMS 2014 - Sapporo, Japan
Duration: Oct 14 2014Oct 16 2014

Publication series

NameISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014

Other

Other8th Asian Rock Mechanics Symposium, ARMS 2014
CountryJapan
CitySapporo
Period10/14/1410/16/14

Fingerprint

Coal Ash
fly ash
acid mine drainage
drainage
overburden
Drainage
Rocks
rocks
acids
Acids
evaluation
rock
Coal
geotechnical property
Sulfides
coal
sulfides
Chemical analysis
sulfide
Hazardous Waste

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

Cite this

Kusuma, G. J., Shimada, H., Gautama, R. S., Matsui, K., & Saputra, C. H. (2014). An evaluation of fly ash-overburden rock mixtures for a cover layer to prevent acid mine drainage generation in overburden dump. In Kaneko, Kodama, & Shimizu (Eds.), ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014 (pp. 1532-1539). (ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014). International Society for Rock Mechanics.

An evaluation of fly ash-overburden rock mixtures for a cover layer to prevent acid mine drainage generation in overburden dump. / Kusuma, G. J.; Shimada, H.; Gautama, R. S.; Matsui, K.; Saputra, C. H.

ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014. ed. / Kaneko; Kodama; Shimizu. International Society for Rock Mechanics, 2014. p. 1532-1539 (ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014).

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

Kusuma, GJ, Shimada, H, Gautama, RS, Matsui, K & Saputra, CH 2014, An evaluation of fly ash-overburden rock mixtures for a cover layer to prevent acid mine drainage generation in overburden dump. in Kaneko, Kodama & Shimizu (eds), ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014. ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014, International Society for Rock Mechanics, pp. 1532-1539, 8th Asian Rock Mechanics Symposium, ARMS 2014, Sapporo, Japan, 10/14/14.
Kusuma GJ, Shimada H, Gautama RS, Matsui K, Saputra CH. An evaluation of fly ash-overburden rock mixtures for a cover layer to prevent acid mine drainage generation in overburden dump. In Kaneko, Kodama, Shimizu, editors, ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014. International Society for Rock Mechanics. 2014. p. 1532-1539. (ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014).
Kusuma, G. J. ; Shimada, H. ; Gautama, R. S. ; Matsui, K. ; Saputra, C. H. / An evaluation of fly ash-overburden rock mixtures for a cover layer to prevent acid mine drainage generation in overburden dump. ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014. editor / Kaneko ; Kodama ; Shimizu. International Society for Rock Mechanics, 2014. pp. 1532-1539 (ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014).
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