Effects of Shea Nutshell Ash on Physical Properties of Lateritic Soil

International Journal of Civil Engineering
© 2021 by SSRG - IJCE Journal
Volume 8 Issue 11
Year of Publication : 2021
Authors : Majoie Ronelyam Mbakbaye, Erick Kiplangat Ronoh, Isaac Fundi Sanewu
How to Cite?

Majoie Ronelyam Mbakbaye, Erick Kiplangat Ronoh, Isaac Fundi Sanewu, "Effects of Shea Nutshell Ash on Physical Properties of Lateritic Soil," SSRG International Journal of Civil Engineering, vol. 8,  no. 11, pp. 1-6, 2021. Crossref, https://doi.org/10.14445/23488352/IJCE-V8I11P101


This study focused on examining the effects of Shea nutshell ash (SNSA), derived from the calcination of Shea nutshell (an agro-based waste) as a partial replacement for cement on the stabilization of lateritic soils for the production of interlocking earth blocks. The optimum percentage of cement to stabilize the lateritic soil was partially replaced by SNSA from 0 to 6% by mass with a step of 2. The effects of SNSA on Atterberg limits, maximum dry density and optimum moisture content of Lateritic Soil were evaluated. The results showed that the shrinkage decreased by 12.6 % with increasing SNSA content and the plasticity index decreased by 8.43 % up to 4 % of SNSA before increasing with 6% of SNSA. The maximum dry density and optimum moisture content increased by 11.62 % and 3.16 %, respectively with increasing SNSA content. Based on these results, stabilization of lateritic soil with SNSA, in addition to being affordable and environmentally friendly, improved the physical properties of the soil for use in construction works.


Shea nutshell ash, lateritic soil, Atterberg limits, maximum dry density, optimal moisture content.


[1] P. Elias and A. Omojola, The challenges of climate change for Lagos, Nigeria, Curr. Opin. Environ. Sustain., 13 (2015) 74–78.
[2] UN-Habitat, World Habitat Day 2014 – ‘Voices from Slums, 2014.
[3] UN-Habitat, Housing for all : the challenges of affordability, accessibility and sustainability : The experiences and instruments from the developing and developed worlds : a synthesis report. (2008).
[4] E. Baja, Local construction materials for affordable housing, Bachelor of Science, Makelle University of Ethiopia, (2020).
[5] A. Jideofor, Earth shelters; a review of energy conservation properties in earth sheltered housing, Energy Conserv. 63(3) (2012) 1–24.
[6] A. Ekinci, M. Hanafi, and E. Aydin, Strength, stiffness, and microstructure of wood-ash stabilized marine clay, Minerals, 10(9) (2020) 1–23, doi: 10.3390/min10090796.
[7] L. Bockel, M. Veyrier, P. Gopal, A. Adu, and A. Ouedrado, Developpement de la filiere karite- principal moteur de fixation du carbone en Afrique de l’Ouest. Accra.FAO and Global Shea Alliance. (2020).
[8] D. Frederic, Doubler les bénéfices du beurre de karité en valorisant les coques en énergie. https://www.bioenergie-promotion.fr/35544/doubler-les-benefices-du-beurre-de-karite-en-valorisant-les-coques-en-energie/ (2021).
[9] A. Dejean, I. W. K. Ouédraogo, S. Mouras, J. Valette, and J. Blin, Shea nut shell based catalysts for the production of ethanolic biodiesel, Energy Sustain. Dev. 40(103) (2017) 1–10.
[10] T. Y. Tsado, M. Yewa, S. Yaman, and F. Yewa, Effect of sheanut shell ash as a partial replacement of ordinary portland cement in mortar, Int. J. Eng. Sci. Invent. ISSN. 3(4) (2014) 1–5.
[11] P. Zieve, P. . Yalley, and R. Saan, Experimental investigation of sheanut shells ash as partial replacement of cement for sustainable and affordable concrete production, Int. J. Eng. Sci..6(6) (2016) 1–7.
[12] KS EAS 18-1, Cement - composition, specification and compliance criteria (2001).
[13] KS EAS 12, Potable water — Specification (2014).
[14] ASTM C618-19, Standard specification for coal fly ash and raw or calcined natural pozzolan for use in concrete. https://www.astm.org/Standards/C618.htm (accessed Apr. 20, 2021).
[15] British Standards Institution (BSI).BS 1377-1, Methods of test for soils for civil engineering purposes. https://shop.bsigroup.com/ProductDetail?pid=000000000030306957 (2021).
[16] F. V. Riza, I. A. Rahman, A. Mujahid, and A. Zaidi, A brief review of Compressed Stabilized Earth Brick (CSEB), in CSSR 2010 - 2010 International Conference on Science and Social Research, (2010) 999–1004.
[17] The African Organization for Standardization (ARSO), African Standard WD-ARS. (1333) (2018).
[18] P. E. Moses, M. . Chockalingam, R. Venkatakrishniah, and P. Dayakar, Laterite soil for manufacturing compressed stabilised earth block: A feasibility study, J. Crit. Rev. 7( 1) (2020) 1–4.
[19] F. A. Jules, Effects of stabilizers on the physical and mechanical properties of clays blocks: A case study using Mangu soil (Kenya), PAUISTI. (2018).
[20] S. P. Raychaudhuri, The occurrence , distrihution , classification and management of laterite and lateritic soils, Journée Georg. Aubert.18(3–4) (1980) 249–252.
[21] S. P. Raychaudhuri, The occurrence, distribution, classification and management of laterite and lateritic soil, in The occurrence, distrihution, classification and management of laterite and lateritic soils. XVIII(3–4) (1980) 1–4.
[22] British Standards Institution (BSI).BS 1377-2, Methods of test for soils for civil engineering purposes. Classification tests. https://shop.bsigroup.com/ProductDetail/?pid=000000000000793481 (accessed Apr. 24, 2021).
[23] B. T. Kamtchueng et al., Geotechnical, chemical and mineralogical evaluation of lateritic soils in humid tropical area (Mfou, Central-Cameroon): Implications for road construction, Int. J. Geo-Engineering. 6(1) (2015) 1–21.
[24] BS 1377-2, Methods of test for Soils for civil engineering purposes. London, UK: BSI, 1990.
[25] B. Dabou, C. Kanali, and Z. Abiero-gariy, Structural Performance of Laterite soil Stabilised with Cement and Blue Gum ( Eucalyptus Globulus ) Wood Ash for Use as a Road base Material. 69(9) (2021) 257–264, doi: 10.14445/22315381/IJETT-V69I9P231.
[26] S. A. Tamur and H. Gandomi, Improvement of shear strength of cohesive soils by additives: A review. https://www.sciencedirect.com/science/article/pii/B9780128205136000114 (2021).
[27] G. M. Ayininuola and O. A. Adekitan, Compaction characteristics of lateritic soils stabilised with cement-calcined clay blends, J. Silic. Based Compos. Mater. 69(2) (2017) 0–5.
[28] I. A. Oyediran, Effect of Increasing Cement Content on Strength and Compaction Parameters of some Lateritic Soils from Southwestern Nigeria, Electron. J. Geotech. Eng. 16 (2011) 1501–1514.