Study on Hydraulic Conductivity of Cement-Treated Pavement Base Course Made of Recycled Plastic and Concrete Aggregates
Publication: Geo-Congress 2024
ABSTRACT
The primary objective of this study is to analyze the hydraulic characteristics of cement-treated pavement base course, which is fabricated of recycled plastics and recycled crushed concrete aggregates (RCCA). To fulfill this objective, representative cylindrical pavement base course samples, stabilized by certain dosages of cement, have been prepared incorporating both shredded plastics and recycled aggregates, and prepared samples were then subject to constant head permeability test following the standard of ASTM D2434. In this study, three different types of plastics, that is, polyethylene terephthalate (PET), high-density polyethylene (HDPE), polypropylene (PP), have been used in three varied proportions (0%, 3%, and 5%), and four different cement dosages (4%, 6%, 8%, and 10%) have been considered for stabilization purposes. This study comes to opine that percentage of both plastic and cement dosage in respective samples significantly influence hydraulic conductivity numbers of pavement base course. In short, this study did reveal that hydraulic conductivity values tend to lessen significantly with increasing cement dosage, and on the contrary, hydraulic conductivity numbers were observed to increase exponentially with the increase of plastic percentages.
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Geo-Congress 2024
Pages: 248 - 255
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Published online: Feb 22, 2024
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