نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
Soil stabilization is a vital process in civil engineering that enhances the mechanical properties of soil to create a more stable foundation for structures. One emerging environmentally friendly method of soil stabilization is the use of eco-friendly polymers. Accordingly, this study investigates the properties of wind-blown sand stabilized with two environmentally friendly emulsion copolymers, namely styrene-acrylate copolymer and styrene-butadiene copolymer, at three different concentrations. First, compaction tests were conducted to determine the optimal amount of emulsion polymer required to achieve maximum dry density at different concentrations. Then, the stabilized soil samples were evaluated through unconfined compressive strength, shear strength, indirect tensile strength, and durability tests. According to the results, increasing the polymer content initially increases and then decreases the unconfined compressive, shear, and indirect tensile strengths. The optimal content for pure polymer A70 was 6.03%, and for pure polymer B70 it was 4.02%. Furthermore, results showed that increasing the polymer percentage reduces the weight loss caused by freeze-thaw and wet-dry cycles. In addition, the performance of soil stabilized with these two polymers can be accurately predicted using regression models provided by statistical analysis via the Design–Expert software. T-test results using SPSS software for comparing the performance of the soils stabilized with the two polymers indicate a significant difference in compressive strength, tensile strength, and durability properties, while the difference in shear strength parameters is not statistically significant.
کلیدواژهها English