Assessment of Performance and Durability in Cement-Stabilized Quarry By-Product Soil as Road Pavement Bases
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Abstract
The knowledge of polymer-modified concrete has been well established and employed in real field applications for over a decade. On the other hand, research on polymer-stabilized soil is still limited. Therefore, this study aims to evaluate the performance and durability of polymer-stabilized soil for pavement applications. This study used the same polymer types for concrete modification as soil stabilizers. Two types of polymers used in this research are the Styrene Acrylic (SA) polymer and Styrene-Butadiene Rubber (SBR). The engineering performance, water absorption, and durability tests were conducted to characterize the polymer-stabilized soils. Preliminary results reveal that the strength and durability of polymer-stabilized quarry by-product soil can be improved by the proper dosage of polymers and cement. However, stabilized soil with the polymer alone cannot resist moisture damage at an early age; these are indicated by the dramatic drops in CBR values of the soaked specimens. Therefore, the stabilized soil requires little cement to gain its early strength. The test results indicate the possibility of employing polymer-stabilized cemented soil as road pavement materials. Besides the strength improvement by 21% to 29%, the polymer additives also enhanced the durability and reduced the water absorption rate of the cemented soil.
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