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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 21, No. 7, 2017, pp. 1378-1381
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Bioline Code: ja17181
Full paper language: English
Document type: Research Article
Document available free of charge
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Journal of Applied Sciences and Environmental Management, Vol. 21, No. 7, 2017, pp. 1378-1381
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Geotechnical Properties of Clayey Soil Stabilized with Cement-Sawdust Ash for Highway Construction
OWAMAH, HI; ATIKPO, E; OLUWATUYI, O & OLUWATOMISIN, AM
Abstract
The study was conducted to investigate the different effects of cement-sawdust ash and cement on a
clayey soil sampled from Mandate Lodge, Landmark University, Omu-Aran, Nigeria. The binder mix of cementsawdust
ash (CSDA) was mixed in a ratio of 1:1. The CSDA and cement were added to the soil samples at varying
percentages of 1.5, 3.0, 4.0, and 7.0% by weight of the soil. Atterberg limits and strength tests (unconfined compressive
strength (UCS) and direct shear (DS) test) were performed on the samples to determine the suitability of the stabilized
soil as a construction material in highway pavement.Atterberg limit test result showed that the addition of 7% cement
decreased the liquid limit from 58% to 42% and plasticity index from 18% to 3%, while the addition of 7% CSDA
decreased the liquid limit from 58% to 48% and plasticity index from 18% to 4%. The atterberg limit test results also
showed that the stabilized clayey soil samples met the requirements of the Nigerian General Specifications of maximum
plasticity index (PI) of 30% and liquid limit (LL) of a maximum of 50% when used as a subgrade material in highway
construction. The strength test result showed that the strength values of the samples increased with binder addition and
met with the requirement for use as a subgrade material in highway construction.
Keywords
Cement; Saw dust; strength test subgrade material; highway construction
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© Copyright 2017 - Owamah et al.
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