Abstract
Soil stabilization has been widely used as an alternative to substitute the lacking of suitable materials on site. Guidelines and standards have been developed to assist practitioners in designing structures such as road by mean of stabilization. This paper presents the results of an investigation aimed at evaluating and assessing the suitable guidelines for the stabilization of tropical residual soils. Two types of tropical residual soils namely granite residual and sedimentary residual soil were tested by using conventional methods practiced in Malaysiaand two guidelines, namely the TRL and PWD were evaluated. From the results of this study, it appeared that the TRL gave a simplified and satisfactory route in selection of suitable binder for the stabilization processes of tropical residual soils.
Highlights
Studies of soil stabilization by using solid stabilizing agents such as cement, lime and fly ash have been conducted on soils in many regions around the world
Given the humid tropical climate that prevails in Malaysia which is characterized by high temperatures and heavy rainfalls, the formation of tropical residual soils is intense with a predominance of chemical weathering of rocks, resulting in deep weathering profiles and soil mantles often exceeding 30 m[4]
The reduction of the soil maximum dry densities could be due to an immediate formation of cementitious products which reduced the compactibility and reduce the densities of the treated soil
Summary
Studies of soil stabilization by using solid stabilizing agents such as cement, lime and fly ash have been conducted on soils in many regions around the world. Given the humid tropical climate that prevails in Malaysia which is characterized by high temperatures and heavy rainfalls, the formation of tropical residual soils is intense with a predominance of chemical weathering of rocks, resulting in deep weathering profiles and soil mantles often exceeding 30 m[4]. This feature gives relatively abundant materials for engineering works such as highway cut slopes, urban developments, dam site excavation, road constructions and others
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