Hydraulic Conductivity of Compacted Tropical Clay Treated with Rice Husk Ash

Abstract:

Laboratory study on compacted tropical clay treated with up to 16% rice husk ash (RHA), an agro-industrial waste; to evaluate its hydraulic properties and hence its suitability in waste containment systems was carried out. Soil-RHA mixtures were compacted using standard Proctor, West African Standard and modified Proctor efforts at-2, 0, 2 and 4% of optimum moisture content (OMC). Compacted samples were permeated and the hydraulic behaviour of the material was examined considering the effects of moulding water content, water content relative to optimum, dry density and RHA contents. Results showed decreasing hydraulic conductivity with increasing moulding water content and compactive efforts; it also varied greatly between the dry and wet side of optimum decreasing towards the wet side. Hydraulic conductivity generally decreased with increased dry density for all effort. Hydraulic conductivity increased with rice husk ash treatment at the OMC; but were within recommended values of 1 x 10^-7 cm/s for up to 8% rice husk ash treatment irrespective of the compactive effort used. This shows the suitability of the material as a hydraulic barrier in waste containment systems for up to 8% rice husk ash treatment and beneficial reuse of this agro-industrial waste product.

• Periodical: Advanced Materials Research (Volume 367)
• Pages: 63-71
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.367.63
• Online since: October 2011
• Authors: Adrian O. Eberemu, Agapitus A. Amadi, Joseph E. Edeh
• Keywords: Compaction, Hydraulic Conductivity, Landfill, Leachate, Tropical Clay Index

References

[1] J. J. Bowders, M. A. Usman, and J. S. Gidley: Stabilized fly ash for use as low permeability barrier. Geotechnical Practice for Waste Disposal; R.D. Woods Ed., GSP No. 13. ASCE New York p.320–333. (1987).

[2] T. Zimmie, H. Moo-Young, K.L. Plant: The use of waste paper sludge for landfill cover material. Green 1993 Waste disposal by landfill. An Int. symposium. Geotechnics related to environment, Bolton, Institute, U.K. USI 2: 11 – 19. (1993).

DOI: 10.1520/stp15647s

[3] T. Abichou, C. H. Benson, and G. T. Edil: Foundary green sand as hydraulic barriers laboratory studies. J. of Geotech and Geoenvironmental Engrg. A.S.C.E. Vol. 126. No. 12, (2000) p.1174–1183.

DOI: 10.1061/(asce)1090-0241(2000)126:12(1174)

[4] K. J. Osinubi and C. M. O. Nwaiwu: Hydraulic conductivity of compacted lateritic soil. Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 131 No. 8 (2005), pp.1034-1041.

DOI: 10.1061/(asce)1090-0241(2005)131:8(1034)

[5] K. J. Osinubi and C. M.O. Nwaiwu: Design of compacted lateritic soil liners and covers. J. Geotech and Geoenviron. Engrg., ASCE, 132 (2), (2006), p.203 – 213.

DOI: 10.1061/(asce)1090-0241(2006)132:2(203)

[6] K. J. Osinubi, A. O. Eberemu and A. A. Amadi: Compacted Lateritic Soil Treated with Blast Furnaces Slag as Hydraulic Barriers in Waste Containment. Int. J. Risk Assessment and Management. Vol. 13, No. 2. (2009), p.177 – 188.

DOI: 10.1504/ijram.2009.030328

[7] D. E. Daniel, and C. H. Benson: Water content density criteria for compacted soil liners. ' J. of Geotechnical Engrg. A.S.C.E. Vol. 116. No. 12 (1990), pp.1811-1830.

DOI: 10.1061/(asce)0733-9410(1990)116:12(1811)

[8] D. E. Daniel: Clay liners. Geotechnical Practice for Waste Disposal' Edited by David E. Daniel. Chapman and Hall London. Pg. 137–163. (1993).

DOI: 10.1007/978-1-4615-3070-1_7

[9] S. Chiarakorn: Influence of Functional Silarus on Hydrophobicity of MCM. 41 Synthesized From Rice Husk. Sci. Technol. Adv. Mater 8, 110. (2007).

[10] AASHTO: Standard specification for transportation materials and methods of sampling and testing, 14th Ed., Washington, D.C. (1986).

[11] ASTM: Annual book of ASTM standards, Vol. 04. 08, Philadephia. (1992).

[12] British Standard Institute: Methods of testing soils for civil engineering purposes. BS 1377, London. (1990).

[13] K. H. Head: Manual of soil laboratory testing Soil classification and compaction tests. 2nd Ed. Vol. 1. Pentech Press, London. (1992).

[14] C. H. Benson, H. Zhai and X. Wang: Estimating hydraulic conductivity of compacted clay liners. J. Geotech. Engrg. ASCE, Vol 120 No. 2 (1994), p.366 – 387.

DOI: 10.1061/(asce)0733-9410(1994)120:2(366)

[15] K. J. Osinubi, A. O. Eberemu, and L. S. Kasham: Influence of bagasse ash content on the hydraulic conductivity of compacted lateritic soils at reduced Proctor effort Proceedings of Bi-Monthly Meetings/Workshops. Materials Society of Nigeria (MSN) Zaria Chapter. A.B.U. Zaria. pp.17-25. (2007).

DOI: 10.1061/41095(365)33

[16] T.W. Lambe: The structure of compacted clay. Journal of Soil Mechanics and Foundation Engineering Division, ASCE, Vol. 84, No. 2, (1958), pp.1-35.

[17] C. H. Benson, and D.E. Daniel: Influence of clods on hydraulic conductivity of compacted clay. J. of Geotech Engrg. A.S.C.E. Vol. 116. No. 8. (1990), p.1231–1248.

DOI: 10.1061/(asce)0733-9410(1990)116:8(1231)

[18] H. W. Olsen,: Hydraulic Flow Through Saturated Clays". Proceedings of the Ninth National Conference on Clays and Clay Minerals. (1962), pp.131-161.

DOI: 10.1016/b978-1-4831-9842-2.50011-0

[19] K. J. Osinubi and O. A Eberemu.: Hydraulic conductivity of compacted lateritic soil treated with blast furnace slag. Electronic Journal of Geotechnical Engineering (EJGE) Vol. 11, (2006) – Bundle D. Paper 0693.

DOI: 10.1007/s10706-010-9308-6

[20] K. J. Osinubi, A. O. Eberemu and A. Ogbe: Effect of bagasse ash content on the hydraulic properties of lateritic soil. Submitted to Nigerian Journal of Material Science and Engineering (NJMSE) Vol. 1, No. 1. (2008), p.53 – 62.