From Debris to Innovation: Unveiling a New Frontier for Alkali-Activated Materials

Abstract

Alkali-activated materials (AAMs) play a crucial role in addressing the environmental challenges of traditional construction binders by offering a lower carbon footprint alternative. Industrial by-products are utilized, reducing waste and energy consumption associated with lime and cement production. AAMs represent a sustainable innovation in the construction industry, promising significant reductions in CO2 emissions and resource utilization. This review aims to meticulously analyze the existing body of research on the potential of Construction and Demolition Waste (CDW) as an alternative precursor for producing AAMs. This review study introduces a novel angle by critically evaluating advancements in CDW processing techniques for AAM production, alongside assessing the environmental and mechanical outcomes. It pioneers bridging the gap between innovative recycling methods and sustainable construction practices. The ultimate goal is to synthesize findings into a comprehensive framework to guide future research toward optimizing CDW utilization in AAM production, thereby contributing to sustainable construction practices and the circular economy. This study stands out for its in-depth examination of CDW's role in mitigating the environmental impact of conventional construction materials, offering novel insights into the path toward sustainability in the construction industry. By critically assessing the latest advancements in CDW processing techniques and their environmental and mechanical implications, the study not only underscores the potential of CDW in revolutionizing the construction industry but also sets a new precedent in sustainability research. It bridges the crucial gap between theoretical innovation and practical application, offering actionable insights for optimizing CDW utilization in AAM production. This comprehensive analysis signifies a pivotal step towards integrating sustainable practices within the construction sector, advocating for a paradigm shift towards a circular economy that prioritizes resource efficiency and environmental stewardship.