Effect of Plantain Peel Ash on Gradation and Compaction Characteristics of Tropical Soil

Abstract

This study investigated the gradation and compaction properties of lateritic soil treated with plantain peel ash (PPA). PPA was used to improve lateritic soil with up to 10% PPA by dry weight of soil. Tests carried out to include specific gravity, particle size distribution, consistency tests, and compaction (using British Standard light, BSL and West African Standard, WAS) compaction energies. XLSTART 2018 Software was used to develop regression models for the test conducted between the self-determining factors and the dependent factors. The results of the study show that the specific gravity of the soil significantly decreased from its natural value of 2.55 to 2.43 at 4% PPA and thereafter increased to 2.48 at 10 % PPA. The fines content reduced from 59.9 % at the 0 % PPA to 5% at 10% PPA respectively. MDD (BSL and WAS) reduced to 1.76 Mg/m3, 1.84 Mg/m3 at 4%, 6 % PPA content and subsequently increased to 1.91 Mg/m3, 2.0 Mg/m3 at 10 % PPA content respectively. OMC for BSL decreases to 11.8 % at 10 PPA content while WAS was decreased to 8.6 % at10 % PPA content. Regression models for MDD show that self-determining factors, primarily influence the MDD of treated soil. However, in the case of OMC model, Gs and CE with higher coefficients have much more effect on the OMC compared to other variables. Based on the obtained results Gs, CE and PPA significantly affect grading and compaction characteristics of PPA treated the soil. Keywords—Compaction Characteristics, Grading Properties, Lateritic soil, Plantain Peel Ash, Regression Models

Effect of Metakaolin on Strength Properties of Lateritic Soil Intended for Use as Road Construction Material

“…This corresponds to an increase of 170 % compared to the result obtained for the natural soil compacted at the same energy level and cured for the same period. These results agree with various researches [2,18,38,40,42,51].…”

“…Moreover, the additives are highly pozzolanic materials and require water for hydration, improving the admixtures' strength gain and durability. Various researchers reported similar trends [38,35,44,40,18].…”

“…This could be due to the porous nature of metakaolin replacing the fine soil particles. The gradual reduction in liquid limit could also be associated with the agglomeration and flocculation of Clay particles, which is a result of ion exchange at the surface of the particles [3,15,18,42,46]. Plastic limit generally decreased with higher metakaolin contents, from a value of 24.2 to 16.6 % at 30 % metakaolin content.…”

Experimental and Statistical Study on Black Cotton Soil Modified with Cement–Iron Ore Tailings

“…Mining and mineral exploitation has profound benefits on society and the economy through income generation; however, it also generates huge overburden (waste) materials such as silt, mine tailings among others that may compromise the serenity of the environment. It has been shown through research that most industrial, agricultural and domestic wastes could be used in addressing some geotechnical problems (Ajay and Suneet, 2016;Sharma et al, 2017;Etim et al, 2017;Rajbeer et al, 2018;Kanyi et al, 2019;Salahudeen et al, 2014;Ishola et al, 2019;Annafi et al, 2020;Ibrahim et al, 2020;Sa'eed and Augustine, 2020) Therefore, redeploying these wastes to other uses is helpful in terms of resources conservation, improved environment and also for sustained development (Mangalpady, 2012;Osinubi et al, 2015).With the ever increasing quest for cost-saving and safe engineering in modern technology, most materials for construction in their natural state may not meet up with all the minimum requirements provided for in the standard codes, thus necessitating the improvement of such materials to meet up with the desired intent. This is why conscious efforts *Corresponding Author are being channelled towards conversion of industrial materials and "bio-wastes" to engineering products and materials (Collins and Ciesiellski, 1993).…”

Utilization of Nano Silica and Plantain Leaf Ash for Improving Strength Properties of Expansive Soil

“…The study by Ezema, Adinna, and Anayo [4] shows maximum improvement in soil strength by utilizing up to 10% plantain leaf ash. Another study utilized up to 10% of plantain peel ash for improving the strength properties of soil [39]. After sample preparation, strength tests were conducted to analyze how different proportions of plantain leaf ash and nano silica affected the strength properties of expansive soil.…”