TITLE:
Modified Concrete Using Polyethylene Terephthalate Plastic Waste as a Partial Replacement for Coarse Aggregate
AUTHORS:
Dodo Kayentao, Moussa Tamboura, Antoine Padou Diarra, Mah Fatoumata Traore, Adama Coulibaly, Aboubacar Sidiki Toure, Mohamed L. O. Diawara, Kélétigui Daou
KEYWORDS:
PET Waste, Concrete, Dreux Gorisse Approach, Thermal Conductivity, Mechanical Properties of Modified Concrete
JOURNAL NAME:
Open Journal of Applied Sciences,
Vol.13 No.6,
June
28,
2023
ABSTRACT: The present work evaluated the properties of modified concrete using
polyethylene terephthalate (PET) bottle waste as a partial replacement for
coarse aggregate. Modified concrete samples were designed using a water/cement (W/C) ratio of 0.50 and varying percentages of PET
replacement (3%, 7%, 10%, and 15% by volume). Dreux Gorisse’s
formulation approach was used to make the final products, and the mechanical
properties of the samples were determined using Controlab presses. This
modified concrete with PET chips has shown that with a 10% replacement of PET
chips, the fresh density decreases by 3.56%, and the hardened state density
decreases by 2.01%. The water absorption and
thermal conductivity of the formulated concretes decreased. However, the
results showed that the slump of these fresh concretes increased as the
percentage of plastic aggregate replacement increased. Based on the results,
incorporating PET aggregates into concrete contributes to good workability, and lightweight concrete structures, and
provides some thermal comfort in concrete structures.