Strength Studies of Dadri Fly Ash Modified with Lime Sludge – A Composite Material

  • Vaishali Sahu
  • V. Gayathri
Keywords: fly ash, lime sludge, unconfined compressive strength

Abstract

The aim of the present work is to prepare a new type of fly ash–lime sludge composite totally composed with industrial by-products which can be utilized as road construction material. The lime sludge content was varied from 10% to 50% (at an interval of 10%) and the various composites were tested for unconfined compressive strength after 7 and 28 days curing period. The mix formula of this composite was optimized based on maximum strength and equal utilization of both the by-products. The composite with optimal mix formula (fly ash/lime sludge =1:1) results in highest strength. This paper outlines the characteristics of fly ash and lime sludge, method of preparation of compaction specimen and unconfined compression test specimen, testing procedure and salient results thereof. The strength formation mechanism of this composite is discussed. This composite can be further engineered as road construction material with competitive properties.

References

A. R. Thakkar, “Environmental aspects of fly ash utilization and its regulation,” Proc., Utilization of Fly Ash, Surat, 2011.

AWWA, Research Foundation. Disposal of wastes from water treatment plants – Part 2, Section 1, Report on what is known. Jour. 61:11:619, 1969.

IS:2720, Part 10: Methods of Test for Soils: Determination of Unconfined Compressive Strength, Bureau of Indian Standards, Compendium of Indian standards on soil engineering, New Delhi, India, pp. 202-205, 1973.

IS:1727 Methods of Test for Pozzolanic Materials, Bureau of Indian Standards, 1967.

Recommended Practice for Lime Fly Ash Stabilized Soil Base/Sub Base in Pavement Construction, Indian Road Congress standards (IRC), Indian road congress-New Delhi, 1984.

J. T. Shahu, S. Patel, and A. Senapati. “Engineering properties of copper slag-fly ash-dolime mix and its utilization in base course of flexible pavement,” Journal of Materials in Civil Engineering, vol. 25, no. 12, pp. 1871-1879, 2013.

L. Li, F. Santos, Y. Li, W. Shao, Q. Zhao, and F. Amini, “Evaluation of fly ash and soil mixtures for use in highway embankments,” Proc. of Geotechnical special publications, Geocongress 2012: State of the art and practice in geotechnical engineering, Oakland, California, United States, pp. 3672-3680.

M. K. Singh and M. Garg, “Utilization of waste lime sludge as building materials.” J. Scientific and Industrial Research, vol. 67, pp. 161-166, 2008.

S. P. Singh, D. P. Tripathy, and P. G. Ranjith. “Performance evaluation of cement stabilized fly ash–GBFS mixes as a highway construction material,” Waste Management, vol. 28, no. 8, pp. 1331-1337, 2008.

S. R. Kaniraj and V. Gayathri, “Permeability and consolidation characteristics of compacted fly ash,” Journal of Energy Engineering, vol. 130, no. 1, 2008.

W. Shen, M. Zhou, W. Ma, J. Q. Hu, and Z. Cai, “Investigation on the application of steel slag–fly ash–phosphogypsum solidified material as road base material,” Journal of Hazardous Materials, vol. 164, no. 1, pp. 99-104, 2009.

Published
2014-07-01
How to Cite
Sahu, V., & Gayathri, V. (2014). Strength Studies of Dadri Fly Ash Modified with Lime Sludge – A Composite Material. International Journal of Engineering and Technology Innovation, 4(3), 161-169. Retrieved from http://ojs.imeti.org/index.php/IJETI/article/view/140
Section
Articles