SWS Academic Research eLibraryEarth & Planetary Sciences

Scholarly record

COMPACTION AND CONSOLIDATION BEHAVIOUR OF FLY ASH AND POND ASH FOR STOWING IN UNDERGROUND MINES

D. P. Mishra, S. K. Das

First published: 2008DOI pendingView metrics

Abstract

This paper presents the outcome of the study on the compaction and consolidation behaviour of class F fly ash of Talcher Thermal Power Station (TTPS)of India for stowing in the underground mines. Light weight compaction test is conducted by using Proctor mold as per IS: 2720 to determine the optimum moisture content and dry density of fly ash and pond ash samples. From the compaction test it is found that the optimum moisture content of fly ash is 34.25\% at a maximum dry density of 1.15 g/cm3. Similarly, the optimum moisture content of pond ash is found out 34.97\% at a maximum dry density of 1.09 g/cm3. One dimensional consolidation test of the compacted fly ash and pond ash samples is conducted using a fixed ring consolidomer as per Indian Standard IS: 2720 (Part 15) confirming ASTM D2435. From the consolidation test it is found that the pond ash samples shows a higher coefficient of consolidation (Cv) values and therefore, undergoes a faster rate of settlement as compared to the fly ash samples. This represents, the pond ash possesses a better load bearing characteristic as compared to the fly ash and more suitable for stowing.

Publication details

Title
COMPACTION AND CONSOLIDATION BEHAVIOUR OF FLY ASH AND POND ASH FOR STOWING IN UNDERGROUND MINES
Authors
D. P. Mishra, S. K. Das
Proceedings
8th International Scientific Conference - SGEM2008
Publisher
SGEM Scientific GeoConference
Year
2008
Pages
621-628
ISSN
1314-2704
ISBN
954-918181-2
Language
en
Publication type
Conference Paper
Keywords
Fly ashcompactionconsolidationpond ashunderground mines
References8

  1. ASTM C618. Standard specification for coal fly ash and raw or calcined natural pozzolan for use concrete, Annual book of ASTM Standards, Vol. 04.02, 2003.

  2. IS: 2720 (Part 15). Methods of Test for Soils: Part 15, Determination of Consolidation Properties, Bureau of Indian Standards, New Delhi, India, 1986.

  3. Mishra, D. P. & Das, S. K. Assessment of permeability characteristics of fly ash and fly ash-sand mixtures for stowing, Mining Engineers' Journal, Vol. 9, No. 4, November, pp. 9 - 14, 2007.

  4. Moulton, K. L. Technology and utilization of power plant ash in structural fills and embankments, West Virginia University, 1978.

  5. Pandian, N. S. Fly ash characterization with reference to geotechnical applications, J Indian Inst. Sci. , Vol. 84, pp. 1 89-2 1 6, 2004.

  6. Pandian, N. S. & Balasubramonian, S. Permeability and consolidation behavior of fly ashes, Journal of Testing and Evaluation, JTEVA, Vol. 27, No. 5, pp. 337-342, 1999.

  7. Skarzynska, K. M., Rainbow, A. K. M. & Zawisza, E. Characteristics of ash in storage ponds, Proc. Twelth Int. Conf on SM & FE, Rio de Janerio, Vol. 3, pp. 19151918, 1989.

  8. Yudbir & Honjo, Y. Applications of geotechnical engineering to environmental control, Proc. Ninth Asian Regional Conf, Bangkok, Vol. 2, pp. 43 1^69, 1991.

View or Download full articleAccess options
Full paper accessChoose SWS login, librarian support, or instant article download.

SWS access login

Login as SWS Scientific Committee

Authors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.

For librarian assistance: [email protected]

Purchase Instant Access

48-hour online accessComing soon
Online-only accessComing soon
Download the full article in PDF formatEUR 35
  • Article can be downloaded after successful payment.
  • Article may be used according to SWS library access terms.
  • Article cannot be redistributed.
Get full paper

Back to publication list