The Effects of Rice Husk Ash and Non-Biodegradable Polyethylene Terephthalate on The Fresh and Hardened Properties of High-Strength Concrete

The Effects of Rice Husk Ash and Non-Biodegradable Polyethylene Terephthalate on The Fresh and Hardened Properties of High-Strength Concrete

For producing high-strength concrete, a mix of non-biodegradable polyethylene terephthalate (PET) and rice husk ash (RHA) minimizes wastage accumulation and encourages reuse. This paper examines the durability and fresh-hardened qualities of concrete blended with RHA as opposed to regular Portland cement and PET replacement of river sand. While PET waste was processed to replace river sand by 10%, 20%, 30%, and 40%, RHA was utilized to substitute Ordinary Portland Cement (OPC) by 5%, 10%, and 15%. With an increase in PET content, the slump values, compressive strength, flexural strength, and tensile strength diminished, but RHA enhanced these parameters. The blended concrete mixes showed decreased water absorption and high durability to acid attack and chloride ion intrusion. While the addition of PET substantially lowered the water absorption, chloride permeability, and durability against harsh environmental conditions, the pozzolanic reaction products improved the mechanical and durability characteristics of concrete. Porosity can reduce using RHA and PET in opposition to OPC, which can improve durability and mechanical qualities while also reducing the burden on the environment.