Publication Date : 01/08/2018

Author(s) :

Murtala Umar, Gambo Haruna Yunusa, Ado Yusuf Abdulfatah.

Volume/Issue :
Volume 13
Issue 2
(08 - 2018)

Abstract :

Lime has been successfully used as a construction material in many civil engineering constructions, particularly in road constructions. Its economy and ease of handling during construction are the basic factors influencing widespread usage in soil improvement. Hence, for efficient lime stabilization application, lime that would be added to the soil must satisfy an affinity of the soil for lime which is referred to as lime fixation. Thus, this study evaluates the effect of soil composition on the lime fixation of some residual soils. Two residual soil samples were collected from different locations and their mineralogical compositions were determined. The chemical compositions of the lime were determined using XRF analysis. Lime contents of 2, 3, 4, 5, 6, 9 and 12% by dry weight of the soils were used to determine the initial consumption of lime and lime fixation capacities of the two residual soils. Similar percentages were used to evaluate the effects of lime on the strength and plasticity of the soil samples. The results obtained indicated a general increase in the strength, plastic limit and liquid limit of the two residual soils as the lime contents increase up to 5% and 6% lime contents for samples 1 and 2, respectively. Hence, appropriate lime contents that satisfy the initial consumption and fixation capacities are 5% and 6% for samples 1 and 2, respectively. Hence, the higher the clay content of a soil the more lime is required to satisfy its lime fixation capacity.

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