Allison Fenske

Document Type

Honors Thesis


Disposal of waste plastic and waste concrete aggregates is a widespread issue across the globe. If not responsibly disposed of, the waste winds up in sensitive ecosystems where it leeches toxins into its surroundings. In an effort to utilize the waste plastic and waste concrete, studies have been done to test if recycled waste plastic can be mixed with fresh concrete and studies have been done to mix recycled waste concrete in fresh concrete. However, none have been found mixing both recycled wastes in the same mix design. This study determines the effects of recycled plastic and recycled concrete on specific concrete properties. Tests performed in this study include slump, compressive strength, modulus of elasticity, and water permeability. This study had an issue with inconsistent results with the compression test, but conclusions were able to be drawn from the three other tests. The slump test showed the recycled concrete reduced the workability while the recycled plastic had little effect on the workability. The batches tested with recycled plastic content performed better for elasticity and the recycled concrete was deduced to have no advantages in terms of improved strength based on the modulus of elasticity test results.

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