Experimental Study on Strength Characteristics of Fly Ash and Rice Husk Ash added Clay Soil

Experimental Study on Strength Characteristics of Fly Ash and Rice Husk Ash added Clay Soil

J. Jayashree, V. Jeevanantham

download PDF

Abstract. Clay soil is usually stiff in dry state, but in wet state, it loses its stiffness and becomes softer. Various types of clay minerals have unique characteristics of low bearing capacity and certain compressibility. Especially Montmorillonite clay mineral exhibits more degree of swelling and shrinkage and loss of strength when moisture added. According to recent research, rice husk ash is a potential improving material based on its pozzolanic activity. In this study, to improve the engineering properties of expansive clay the admixture such as fly ash and rice husk ash will be added in different percentages as 5, 10, 15 and 20. For the laboratory test that includes atterberg’s limits test, standard proctor compaction test and unconfined compression test were conducted on locally collected expansive soil with various percentages of these two stabilizers in order to examine their influences. The maximum values of Unconfined Compressive Strength were obtained corresponding to 15% Rice Husk Ash and 20% Fly ash.

Clay Soil, Flyash, Rice Husk Ash, Dry Density, Moisture Content, Unconfined Moisture Content

Published online , 6 pages
Copyright © 2022 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: J. Jayashree, V. Jeevanantham, Experimental Study on Strength Characteristics of Fly Ash and Rice Husk Ash added Clay Soil, Materials Research Proceedings, Vol. 23, pp 122-127, 2022

DOI: https://doi.org/10.21741/9781644901953-16

The article was published as article 16 of the book Sustainable Materials and Smart Practices

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

[1] B. R. Phanikumar . T. V. Nagaraju, ” Effect of Fly Ash and Rice Husk Ash on Index and Engineering Properties of Expansive Clays,” Journal of Geotechnical and Geological Engineering, pp. 3425–3436 (2018). https://doi.org/10.1007/s10706-018-0544-5
[2] Erdal Cokca, “Use of Class C Fly Ashes for the Stabilization – of an Expansive Soil” Journal of Geotechnical and Geo-environmental Engineering Vol. 127, July, pp. 568-573. https://doi.org/10.1061/(ASCE)1090-0241(2001)127:7(568)
[4] E.A Basha, R.Hashim, H.B Mahmud, A.S Muntohar, “Stabilization of residual soil with Rice Husk Ash and Cement”, Construction and Building Materials, July 2005. https://doi.org/10.1016/j.conbuildmat.2004.08.001
[5] Basha AM, Hashim R, Muntohar AS, “Effect of the cement rice husk ash on the plasticity and compaction of soil”. Electronic Journal of Geotechnical Engineering 8:1–8.