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Title: Evaluation of the Structural Performance of Lateritic Soil Stabilized with Cassava Peel Ash (CPA) and Cement
Authors: Olutaiwo, Adeoluwa
Adanikin, Ariyo
Keywords: Cassava Peel Ash (CPA)
Lateritic Soil
Subgrade Soil
Issue Date: 4-Jul-2016
Publisher: ARC journals
Citation: iv) Adanikin, A & Olutaiwo, A. O. (2016). Evaluation of the Structural Performance of Lateritic Soil Stabilized with Cassava Peel Ash (CPA). International Journal of Constructive Research in Civil Engineering (IJCRCE). 2(2), 18-26.
Abstract: This study presents the result of experimental investigation on the evaluation of the effects of Cassava Peel Ash (CPA) on the index and structural properties of lateritic soil of A-7-5 (AASHTO Classification) and SP soil (USCS classification) respectively. The study was in two phases, firstly with the addition of CPA only by weight of dry soil and secondly with the addition of 5% cement with the CPA by weight of dry soil. The CPA additions were performed using 0, 2, 4, 6, 8 and 10% increment by weight of dry soil thoroughly mixed. The results of the treated soil showed that the index properties: plastic limit and the maximum dry density (MDD) decreased as the CPA addition increased whereas the liquid limit, plasticity index, Optimum Moisture Content (OMC) and California Bearing Ratio (CBR) increased as the CPA content increased. It was also discovered that the Unconfined Compressive Strength (UCS) increased up to 4% of CPA addition after which was a reduction. This implies that CPA possesses the potential for use in the modification/ stabilization of lateritic soils. Thus the use of CPA in road construction works can be said to have two major advantages – as an effective agricultural waste management and the improvement of road construction soils for better road performance.
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