Empirical Investigation on the Applications of Graphene Oxide in Enhancing the Concrete’s Durability and Mechanical Properties Mixed with Polypropylene Fiber
摘要
Since the pandemic, billions of face masks have been manufactured and discarded, perpetuating a severe environmental risk to the ecosystem. This study attempted to divert such waste into a practical application in the engineering industry. Despite the good environmental intentions of incorporating this material into concrete, concrete admixed with 0.125 wt% of facemask deteriorated the concrete’s compressive strength and durability (by 27% at 28 days and 18% at 38 days, respectively). To reduce the negative effect of the facemask, Graphene Oxide (GO, at 1.25 × 10−4 wt%) was added, which significantly neutralized these effects to the compressive strength and durability (by 17% at 28 days and 8% at 38 days, respectively). Adding a facemask alone to the concrete significantly improved its split tensile strength (by 36% at 28 days). The GO-treated facemask further enhanced the concrete’s split tensile strength (by 81% at 28 days). Likewise, regression and correlation analysis were also carried out to reveal the optimum mix design and best mix types among the three.