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2010 (Vol. 2, Issue: 6)
Article Information:

Effects of Dissolved Alum on the Geotechnical Properties of Lateritic Soil for Road Construction

O.O. Amu, A.R. Origbemide and E.O. Saseun
Corresponding Author:  Olugbenga Oludolapo AMU 

Key words:  Alternative material, alum treatment, construction method, material strength, road upgrade, stabilization,
Vol. 2 , (6): Page No: 543-546
Submitted Accepted Published
2010 June, 04 2010 July, 08 2010 September, 10
Abstract:

This research was carried out to study the effects of dissolved alum on the geotechnical properties of lateritic soil for road construction. Preliminary tests were performed on three samples, A, B and C for identification and classification purposes followed by the consistency limit tests. Geotechnical property tests (compaction, California Bearing Ratio (CBR), unconfined compression test and triaxial) were also performed on the samples, both at the stabilized and unstabilized states by adding varying amounts of alum (5, 10 and 15g of alum/liter) to the soil samples. The results show ed that the addition of alum significantly reduced the strength of the three soil samples. Maximum Dry Density (MDD) increased simultaneously as the Optimum Moisture Content (OMC) increased, the CBR values decreased from 15.2 to 0.9%, 13.1 to 1.3% and 14.0 to 1.2% in samples A, B and C , respectively. Shear strength values also decreased from 43 to 15, 49 to 16 and 41 to 16 kN/m2 in samples A , B and C, respectively. The study concluded that alum -soil is detrimental to the geotechnical properties of lateritic soil for road construction.
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  Cite this Reference:
O.O. Amu, A.R. Origbemide and E.O. Saseun, 2010. Effects of Dissolved Alum on the Geotechnical Properties of Lateritic Soil for Road Construction.  Research Journal of Applied Sciences, Engineering and Technology, 2(6): Page No: 543-546.
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ISSN (Online):  2040-7467
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