TY - GEN
T1 - The effect of groundnut shell ash and metakaolin on geotechnical properties of black cotton soils
AU - Umaru, Ibrahim
AU - Alhaji, Mustapha Mohammed
AU - Jagaba, Ahmad Hussaini
AU - Kutty, Shamsul Rahman Mohamed
AU - Lawal, Ibrahim Mohammed
AU - Abubakar, Sule
AU - Soja, Usman Bala
N1 - Copyright © 2023 Springer-Verlag. This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at https://doi.org/10.1007/978-3-031-26580-8_27
PY - 2023/5/9
Y1 - 2023/5/9
N2 - Groundnut shell ash (GSA) and metakaolin (MK) were investigated for their stabilizing prospects in highly expansive clay soils due to the rising cost of traditional stabilizers and the need for cost-effective utilization of waste materials for useful engineering applications (black cotton soil). The natural soil’s index qualities revealed that it belongs to A-7-6 in the AASHTO classification system and CH in the USCS classification system. This implied that the soil is unsuitable for most engineering purposes. The natural soil’s liquid limit and plasticity index values of 60.2% and 30.1%, respectively, which indicated that the samples were malleable. The soaked CBR for natural soil is 1.67%, but it rises to 3.26% when 10% GSA and 10% MK are added. This value fell short of the recommended CBR values for pavement materials. The samples’ durability measured based on their resistance to strength loss, fell short of the recommended strength by 80%. This concludes that the groundnut shell ash and metakaolin cannot be used as standalone for stabilization of black cotton soil. However, when compared to the un-stabilized soil, the strength of UCS increased from 128.03 kN/m2 to 482 kN/m2 after 28 days of curing.
AB - Groundnut shell ash (GSA) and metakaolin (MK) were investigated for their stabilizing prospects in highly expansive clay soils due to the rising cost of traditional stabilizers and the need for cost-effective utilization of waste materials for useful engineering applications (black cotton soil). The natural soil’s index qualities revealed that it belongs to A-7-6 in the AASHTO classification system and CH in the USCS classification system. This implied that the soil is unsuitable for most engineering purposes. The natural soil’s liquid limit and plasticity index values of 60.2% and 30.1%, respectively, which indicated that the samples were malleable. The soaked CBR for natural soil is 1.67%, but it rises to 3.26% when 10% GSA and 10% MK are added. This value fell short of the recommended CBR values for pavement materials. The samples’ durability measured based on their resistance to strength loss, fell short of the recommended strength by 80%. This concludes that the groundnut shell ash and metakaolin cannot be used as standalone for stabilization of black cotton soil. However, when compared to the un-stabilized soil, the strength of UCS increased from 128.03 kN/m2 to 482 kN/m2 after 28 days of curing.
KW - black cotton soil
KW - California bearing capacity
KW - groundnut shell ash
KW - metakaolin
U2 - 10.1007/978-3-031-26580-8_27
DO - 10.1007/978-3-031-26580-8_27
M3 - Conference contribution book
AN - SCOPUS:85161497216
SN - 9783031265792
T3 - Advances in Science, Technology and Innovation
SP - 177
EP - 183
BT - Sustainability Challenges and Delivering Practical Engineering Solutions
A2 - Salih, Gasim Hayder Ahmed
A2 - Saeed, Rashid A.
PB - Springer
CY - Cham
T2 - The 1st Science Engineering Sechnology and Sustainability International Conference
Y2 - 23 December 2021 through 25 December 2021
ER -
