Enhancing Geotechnical Properties of Lateritic Clay with Sawdust Ash-Lime Stabilizer

Oluwafemi O Omotayo; Oluwapelumi O Ojuri; Oluwafemi O Olagunju

doi:10.38032/jea.2023.01.002

Authors

Oluwafemi O Omotayo Department of Civil and Environmental Engineering, Federal University of Technology, Akure, Ondo State, Nigeria
Oluwapelumi O Ojuri Department of Civil and Environmental Engineering, Federal University of Technology, Akure, Ondo State, Nigeria
Oluwafemi O Olagunju Department of Civil and Environmental Engineering, Federal University of Technology, Akure, Ondo State, Nigeria

DOI:

https://doi.org/10.38032/jea.2023.01.002

Keywords:

Lateritic Clay, Sawdust Ash-Lime, Stabilization, Geotechnical Properties, Compactive effort

Abstract

One important means of refining the geotechnical characteristics of soils is stabilization. This research sought to improve the geotechnical properties of lateritic clayey soil using sawdust ash-lime (SDAL) stabilizer. Soil-SDAL mixtures were made, after collecting lateritic clay samples and preparing mixtures of lime and sawdust ash in a ratio of 1:2. SDAL mixtures were added to the lateritic clay in increasing percentages from 0 to 10%. The materials’ index properties were determined, and compaction of the Soil-SDAL mixtures was done using four compactive efforts namely Reduced British Standard Light (RBSL), Standard Proctor (SP), West African Standard (WAS), and Modified Proctor (MP). Unconfined compressive strength (UCS) tests were performed on the Soil-SDAL mixtures as well. Results of the tests showed that the soil could be classified as an A-7-5(7) soil with a 13.7% plasticity index. The plasticity index increased with the addition of SDAL mixtures up to 6% after which there was a gradual decline. Meanwhile, maximum dry density (MDD) decreased while optimum moisture content (OMC) increased with SDAL addition. Unconfined compressive strength (UCS) of the soil increased from 38.58kN/m² at 0% SDAL to a maximum of 129.63kN/m² at 6% SDAL, after which there was a gradual decrease. Similar trends were noticed at all compactive efforts, indicating consistency in the performance of the stabilizer. Optimum results were achieved at 6% SDAL content, with Modified Proctor compactive effort giving the maximum value of 1,860kg/m³MDD. The results prove that sawdust ash-lime mixture offers tremendous abilities in improving lateritic clay soil properties.

References

Ogundalu, A.O., Adeboje, A.O. and Adelaja, F., 2014. Effects of Soldier-Ant Mound (SAM) on the strength characteristics of lateritic clay soils. British Journal of Applied Science & Technology, 4(10), p.1554. DOI: https://doi.org/10.9734/BJAST/2014/8186

Amu, O.O., Bamisaye, O.F. and Komolafe, I.A., 2011. The suitability and lime stabilization requirement of some lateritic soil samples as pavement. Int. J. Pure Appl. Sci. Technol, 2(1), pp.29-46.

Mali, S., Kadam, S., Mane, S., Panchal, K., Kale, S. and Navkar, Y., 2019. Soil stabilization by using plastic waste. Int. Res. J. Eng. Technol.(IRJET), 6, pp.4056-4060.

Upadhyay, A. and Kaur, S., 2016. Review on soil stabilization using ceramic waste. Int. Res. J. Eng. Technol, 3(07), pp.1748-1750.

Afrin, H., 2017. A review on different types soil stabilization techniques. International Journal of Transportation Engineering and Technology, 3(2), pp.19-24.. DOI: https://doi.org/10.11648/j.ijtet.20170302.12

Huat, B.B., Gue, S.S. and Ali, F.H., 2004. Slope failures in tropical residual soils. In Tropical Residual Soils Engineering (pp. 142-194). CRC Press. DOI: https://doi.org/10.1201/9780203024621-10

Ushie, F.A. and Anike, O.L., 2011. Lateritic weathering of granite-gneiss in Obudu Plateau, south eastern Nigeria. Global Journal of Geological Sciences, 9(1), pp.55-73.

Boscov, M.E.G., Hachich, W.C., Mahler, C.F. and de Oliveira, E., 2011. Properties of a lateritic red soil for pollutant containment. Journal of Environmental Protection, 2(07), p.923. DOI: https://doi.org/10.4236/jep.2011.27105

Rao, K.D., Anusha, M., Pranav, P.R.T. and Venkatesh, G., 2012. A laboratory study on the stabilization of marine clay using saw dust and lime. Ijesat] Int. J. Eng. Sci. Adv. Technol, 2(4), pp.851-862.

Ogunribido, T.H.T., 2012. Geotechnical properties of saw dust ash stabilized southwestern Nigeria lateritic soils. Environmental Research, Engineering and Management, 60(2), pp.29-33. DOI: https://doi.org/10.5755/j01.erem.60.2.986

I. D. of T. (INDOT), “Design procedures for soil modification or stabilization,” Indiana Dept. of Transportation, 2002.

Makusa, G.P., 2013. Soil stabilization methods and materials in engineering practice: State of the art review. Department of Civil, Environmental and Natural resources engineering, Division of Mining and Geotechnical Engineering, Luleå University of Technology, Luleå, Sweden.

Mallela, J., Quintus, H.V. and Smith, K., 2004. Consideration of lime-stabilized layers in mechanistic-empirical pavement design. The National Lime Association, 200(1), pp.1-40.

Solanki, P. and Zaman, M., 2012. Microstructural and mineralogical characterization of clay stabilized using calcium-based stabilizers. In Scanning electron microscopy. IntechOpen. DOI: https://doi.org/10.5772/34176

Maher, M., Marshall, C., Harrison, F. and Baumgaertner, K., 2005. Context sensitive roadway surfacing selection guide (No. FHWA-CFL/TD-05-004). United States. Federal Highway Administration. Central Federal Lands Highway Division.

Beeghly, J.H., 2003, October. Recent experiences with lime-fly ash stabilization of pavement subgrade soils, base and recycled asphalt. In Proceedings of the International Ash Utilization Symposium, University of Kentucky, Lexingston, USA, Oct (pp. 20-22).

Standard, B., 1990. 1377:2. Methods of test for soils for civil engineering purposes,” British Standard Institution, London.

Standard, B., 1990. 1377:4. Methods of test for soils for civil engineering purposes,” British Standard Institution, London.

Osinubi, K.J., Eberemu, A.O. and Amadi, A.A., 2009. Compacted lateritic soil treated with blast furnace slag as hydraulic barriers in waste containment systems. International Journal of Risk Assessment and Management, 13(2), pp.171-189. DOI: https://doi.org/10.1504/IJRAM.2009.030328

Standard, B., 1990. 1377 (1990) Methods for test for civil engineering purposes. British Standard Institute, London.

Wright, P.H. and Paquette, R.J., 1987. Highway engineering. John Wiley & Sons, Incorporated.

Amadi, A.A., 2012. Utilisation of fly ash to improve the engineering properties of lateritic soil. International Journal of Materials Engineering Innovation, 3(1), pp.78-88. DOI: https://doi.org/10.1504/IJMATEI.2012.044451

Raheem, A.A. and Sulaiman, O.K., 2013. Saw dust ash as partial replacement for cement in the production of sandcrete hollow blocks. International Journal of Engineering Research and Applications, 3(4), pp.713-721.

A. ASTM C618, “Standard specification for coal fly ash and raw or calcined natural pozzolan for use in concrete,” ASTM international, 2019.

Jerath, S. and Hanson, N., 2007. Effect of fly ash content and aggregate gradation on the durability of concrete pavements. Journal of materials in civil engineering, 19(5), pp.367-375. DOI: https://doi.org/10.1061/(ASCE)0899-1561(2007)19:5(367)

D. J. Reimer, “Military Soils Engineering,” Field Manual Headquarters, Department of the Army. Washington, DC., 1992.

Oriola, F.O.P. and Moses, G., 2011. Compacted black cotton soil treated with cement kiln dust as hydraulic barrier material. American Journal of Scientific and Industrial Research, 2(4), pp.521-530. DOI: https://doi.org/10.5251/ajsir.2011.2.4.521.530

Osinubi, K.J. and Eberemu, A.O., 2013. Hydraulic conductivity of compacted lateritic soil treated with bagasse ash. International Journal of Environment and Waste Management, 11(1), pp.38-58. DOI: https://doi.org/10.1504/IJEWM.2013.050522

Deb, T. and Pal, S.K., 2014. Effect of fly ash on geotechnical properties of local soil-fly ash mixed samples. Int. J. Res. Eng. Technol, 3(5), pp.507-516. DOI: https://doi.org/10.15623/ijret.2014.0305094

Ojuri, O.O. and Oluwatuyi, O.E., 2018, May. Compacted sawdust ash–lime-stabilised soil-based hydraulic barriers for waste containment. In Proceedings of the Institution of Civil Engineers-Waste and Resource Management (Vol. 171, No. 2, pp. 52-60). Thomas Telford Ltd. DOI: https://doi.org/10.1680/jwarm.17.00037

Butt, W.A., Gupta, K. and Jha, J.N., 2016. Strength behavior of clayey soil stabilized with saw dust ash. International Journal of Geo-Engineering, 7, pp.1-9. DOI: https://doi.org/10.1186/s40703-016-0032-9