Harvesting the green potential of Corncob revolution in Sustainable Construction: A systematic review and trends analysis

The global push towards sustainable development has spurred a heightened quest for eco-conscious building materials. With the building and construction industry (BCI) responsible for a significant portion of carbon emissions, the urgency to mitigate climate change effects by transitioning to sustainable practices is paramount. This study embarks on a comprehensive systematic review focused on the repurposing potential of corncob (CC) and its ash derivative within the BCI. It aims to examine trends, applications, and the evolving landscape in this field. The research result highlights that CC can be repurpose to composite materials, particle board, used as precursor in alkali-activated binders, as Fillers, Soil stabilizers, aggregate, replacement of ordinary Portland Cement (OPC) in civil works, thermal and acoustic applications. Notably, the research identifies a growing emphasis on composite materials and geopolymer concrete as novel applications with robust research landscape primarily emanating from regions grappling with waste management challenges and housing shortages. The present study holds considerable significance as it ignites interest among stakeholders, researchers, and policymakers to propel further innovation and adoption of eco-friendly practices in the construction industry, fostering a circular economy and driving the transition to a low-carbon future. It also demonstrates the valorisation of agriculture wastes.