GEOTECHNICAL PROPERTIES OF LATERITIC SOIL STABILIZED WITH YAM PEEL ASH FOR SUBGRADE CONSTRUCTION

Ramonu, John A. L. and Modupe, A. E. and Adeniyi, O. M. and Adewole, T. A. (2018) GEOTECHNICAL PROPERTIES OF LATERITIC SOIL STABILIZED WITH YAM PEEL ASH FOR SUBGRADE CONSTRUCTION. International Journal of Civil Engineering and Technology (IJCIET), 9 (13). pp. 1666-1681. ISSN 0976-6308; 0976-6316

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Abstract

Consequent upon problems encountered vis -a -vis the engineering properties of lateritic soil for the purpose of construction of road pavements in Africa, especially in - East and some part of South – West regions bearing capacity of some sub-grade soils have been found to be low considering the loads imposed on the surface which are transferred down to the sub-grade. The methods employed previously in the stabilization of soils is have been the use of cement, lime, bitumen and lean concrete which are very expensive and also cause environmental hazards and health problems especially to construction workers. In view of these setbacks, this research investigated the effect of stabilization with more economical and hazard free stabilizer such as yam peel ash on the geotechnical properties of lateritic soils. Soil sample was collected from a lateritic soil subgrade of chainage 1 + 500 to 2 + 000 along Ikirun to Osogbo Road, Osun State, Nigeria. It was collected at a depth of not less than 150mm below the ground surface using the disturbed sampling technique. The natural moisture content was determined and the other soil was air-dried to carry the laboratory tests such as (atterberg limits, compaction, sieve analysis, California Bearing Ratio (CBR.), and specific gravity. The Yam Peel Ash, YPA [dioscorea] was used as replacement by weight of dry soil at different percentages (0%, 3%, 6%, 9%, and 12%). The CBR values obtained from the results of untreated lateritic soil was 29% while the optimum CBR values obtained for the stabilized lateritic soil 40% at 6% YPA content. The effect of YPA stabilization on the geotechnical properties of lateritic soil brings considerable improvement on the physical Engineering characteristics of the lateritic soils as evidence by the results of the test carried out. The aim of this research work is to determine the effect of yam peel ash on geotechnic properties of lateritic soil as an alternative stabilizing agent for subgrade in road construction

Item Type:	Article
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TE Highway engineering. Roads and pavements
Divisions:	Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment
Depositing User:	Engr Abayomi Emmanuel Modupe
Date Deposited:	04 Feb 2019 13:30
Last Modified:	16 Sep 2019 09:29
URI:	https://eprints.lmu.edu.ng/id/eprint/1889

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