Call For Paper Volume:8 Issue:4 Apr'2021 |

The Influence of Nanomaterial on Water Absorption and Swell Characteristics of Active Soil

Publication Date : 31/03/2021


DOI : 10.21884/IJMTER.2021.8015.ZI8BR

Author(s) :

Amadise S. Ogboin , John A. TrustGod.


Volume/Issue :
Volume 8
,
Issue 3
(03 - 2021)



Abstract :

Niger flood zone of the Niger Delta is underlain by active soils prone to shrink characteristics coupled with the alternating dry and wet seasons, having annual rainfall over 2000mm. These active soils swell and shrink by moisture variation resulting in considerable damage to the overlying structures including road pavement constructed with or placed on them. This paper deals with the performance of the nanomaterial as a stabilizer for the treatment of active soils using swell potential and water absorption. Soil samples were collected from field locations across the Niger flood zone in the Niger Delta. Various tests were conducted on each location samples for soil classification, free swell index, and water absorption. Study results showed that the engineering properties of the treated soil samples improved significantly with the addition of the nanomaterial at various ratios of 1:250, 1:200, 1:150, 1:100, and 1:50. The untreated active soils are rated as high shrink-swell potential with activity range between 1.3-1.5 and are calcium montmorillonite, alluvial clay having clay contents exceeding 30%. They are classified as CH and CL per USCS. On the application of nanomaterial to the active soil, modified free swell, decreased and subsequently altered the swell potential from high to moderate. Also, water absorption reduced from 27.1% to 4.5% signifying improved hydrophobicity. Statistical tests were performed to validate if the changes in engineering properties resulted from the addition of the Nanomaterial as a stabilizing agent. Analysis of variance tests performed at a 95% confidence limit validate the effect of Nanomaterial on re-engineering the properties of active soils.


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The Influence of Nanomaterial on Water Absorption and Swell Characteristics of Active Soil

March 5, 2021