Abstract
Plastic waste is a menace due to its non-degradable properties and chemical composition. Owing to inefficient recycling methods, around 90% of the E-waste plastics are landfilled every year. Burning of E-waste plastics results into the release of dioxins and furans which create severe environmental threats and health hazards. Several studies have been conducted on the utilization of plastics like soda bottles, plastic bags, etc. comprising of single polymers. However, the sustainable utilization of E-waste plastics is limited because E-waste along with plastics is also comprised of another key ingredients that are critical to recycle. US EPA (2012) study reported that approximately 94% of non-metallic fractions (Plastics) in E-waste are landfilled every year. Also, the plastic in E-waste forms a more complex polymer blend, and hence the initiative toward its safe recycling is limited.This article presents an endeavor towards transforming obsolete keyboard plastics into concrete brick cubes mixed with fly ash and eggshell. FTIR test was conducted to screen the polymers present in E-waste plastics. Qualitative and quantitative tests, such as water absorption, bulk density, compressive strength, hardness, and soundness tests were performed to compare different sets A, B, C, D, and E of the brick cubes. The heavy metals in the plastics were found to be within the permissible limit as per RoHS Standard, US EPA, 1989. The obtained peak of the FTIR test revealed (ABS, TBBA, and PC) polymers which were found to be efficient materials for the preparation of concrete brick cubes. The comprehensive strength (15.25 N/mm2) of brick cube D, comprising keyboard plastic, eggshell, and fly ash as 3.12%, 3.12%, and 6.25%, respectively, was found to be almost similar to the second-class bricks. The experimental approach directs that the conversion of E-waste plastics into concrete brick cubes is a better way to obtrude unusual pressure on the environment.
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