ABSTRACT The environment impact of ordinary Portland cement and increasing plastic waste generation have advanced the search for sustainable construction materials. This study investigates the use of plastic char, generated from waste-plastic pyrolysis, as a 10% replacement for flyash in geopolymer concrete. A control mix containing 50% flyash and 50% ground granulated blast furnace slag was compared with a plastic char mix under advanced CO2 curing (0–48 hrs) followed by ambient curing to 28 days. Plastic char slightly reduced workability, with slump decreasing from 88 to 83 mm. After 12 hrs of CO2 curing, the plastic-char mix achieved a compressive strength of 57.3 MPa, only 1.38% lower than the control mix (58.1 MPa). Split tensile and bond strength results reduction. CO2 uptake increased with carbonation duration, reaching 7.23% after 48hrs. The results demonstrate that plastic char is a viable fly ash substitute in geopolymer concrete, resulting allowable mechanical performance and enhanced carbon sequestration.
The construction industry faces increasing pressure to reduce the environmental impacts associated with Ordinary Portland Cement (OPC) production while maintaining the performance requirements of modern infrastructure. This study investigated the feasibility of producing low-carbon bio-cemented concrete through the com...
The increasing generation of plastic waste and the environmental impact associated with conventional cement production have created a need for sustainable construction materials. This study experimentally investigates the durability performance of recycled plastic fibre-reinforced geopolymer concrete under acid, sulpha...
Prashant Kumar, Rachana Bajaj· International Journal of Res...· 0 citations
Growing environmental concerns associated with Portland cement production, along with the continuous accumulation of construction and demolition waste, have intensified the need for sustainable construction materials and effective recycling strategies. This study experimentally investigates the performance of fly ash-b...
Ashraf Osama, M. A. Abd Elaty, M. Taman et al.· Sustainability· 0 citations
The production of ordinary Portland cement (OPC) is one of the major sources of carbon dioxide emissions in the
construction industry, creating a need for more sustainable building materials. Fly ash-based geopolymer concrete (GPC) has
emerged as a promising alternative because it can reduce environmental impact while...
Abhishek Jadhav, V. Bogar· International Journal for Re...· 0 citations
The rapid increase in accumulation of plastic waste created a major environmental challenge due to the non-biodegradable nature of plastics. One of the most commonly used plastics among them is the High-Density Polyethylene (HDPE), used for bottles, containers and plastic packaging, which has generated a huge amount of...
R. Karthigeyan, A. Kumar· Frontiers in Built Environme...· 0 citations
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