Effects of expanded polystyrene on the concrete hardened properties

Abstract

This study aimed to investigate the influence of Expanded polystyrene EPS content in concrete mixes and optimize the mix by employing the Taguchi method. A total of nine different mixes, which included EPS and additives like Silica fume, were examined along with a control mix. The research looked at how various materials affected the workability and hardened properties of concrete, such as compressive strength, splitting tensile strength, sorptivity, abrasion resistance, and water absorption. The findings revealed that adding EPS to the mix increased workability, an essential characteristic for ensuring the easy handling and application of concrete. However, it was observed that the hardened properties of the concrete, such as compressive strength and water absorption, decreased. To address these limitations, Silica fume SF was introduced to the mix, improving the concrete's performance. Overall, the study highlights both the potential benefits and drawbacks of using EPS in concrete and suggests that including SF may help overcome some of its limitations. The Taguchi method was employed to optimize the mix, allowing for a more efficient and effective approach to evaluating the impact of different materials on the concrete's properties. This finding may prove useful for researchers and experts in the construction field who are attempting to enhance the performance and durability of concrete mixes.