Abstract
In this study, the objective was to blend and mix Portland cement and bitumen emulsion with soil for enhancing the strength, durability and pertinent properties of the soil. In order to enhance the soil strength and lessen its vulnerability to water, soil stabilization is required to be applied to the soil. In line with this, improved load transfer was added to the pavement foundation by having the cement effect which actually boosts the stiffness and Bitumen emulsion effects which improve resilience and soil permeability of the stabilized layer. The current study is divided into two phases. In the first phase, the optimization of Portland cement and bitumen emulsion was preformed as well as conducting a series of Indirect Tensile Strength (ITS). Furthermore, in order to lessen the pavement’s thickness and to enhance its bearing capacity, alternative roadway sections were scrutinized through the second phase. The results proved that soil stabilization with cement and bitumen enhances the bearing capacity of pavements in two chief areas. Primarily, there was enhancement in pavement’s lifetime and the more efficient construction time is achieved.
Highlights
In pavement constructions, soil material is highly required in the road construction industry
Soil stabilization is presented using Portland cement and bitumen emulsion including the mix design and testing program to determine the best percentage value for cement and emulsion by means of Indirect Tensile Strength (ITS) test which is divided into four stages
The materials used in this study included soil, Portland cement and bitumen emulsion
Summary
Soil material is highly required in the road construction industry. By means of chemical and mechanical processes, geomaterials which are soils and rocks need stabilization in construction and maintenance of transportation facilities. When applying these techniques and processes, the properties of stabilized geomaterials and their mixtures should be appropriate for being use in foundation designs, embankments, shoulders, subgrades, bases, as well as the surface courses (Das, 2003). For the purpose of enhancing the soils’ engineering properties by mechanical or chemical means or both, soil stabilization will be conducted by adding a stabilizing agent to the natural soil deposit. By aiming to open the road to traffic rapidly after construction and for preventing or restricting the base layer raveling, emulsion would be primarily included in the pavement layers as it boosts the layer’s water- resisting properties and enhances the cohesion on the surface (Liebenberg and Visser, 2003)
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