Part of #Effects of Lime and Sawdust Ash on the Plasticity and Compaction Characteristics of Lateritic Soil# :
Publishing year : 2012
Conference : 7th International Conference on Science and Technology
Number of pages : 9
Abstract: Sawdust is a waste product that has for many years contributed significantly to the increasing levels of environmental pollution in Nigeria. Sawdust ash (SDA) is a direct product of total incineration of sawdust. SDA contains a considerable amount of silica (SiO2) needed for pozzolanic stabilization of soil. Lime is an additive, which is constantly being used to modify / stabilize soils for civil engineering construction purposes. This paper therefore presents the results of a laboratory study to determine the suitability of SDA as a complementary additive with lime for stabilizing clayey soils. Clayey soil from a site site in Ile-Ife, Nigeria was treated with different percentages of SDA and lime, individually and in combination, and the Atterbergs Limit Test and standard Proctor compacting test were conducted to determine SDA as an effective agent Of clayey soil. The results of the experiment conducted showed that some mixtures of both lime and SDA significantly reduced the plasticity index of masonry soil. The optimal percentage was 6% lime and 10% SDA in combination which reduced the plasticity index and increased the soil's maximum dry density. It can be concluded that this optimum mix of lime-SDA combination could be used for construction work, in which the reduction of swelling and shrinkage of masonry soil is of prime importance.