Recycled Aggregates for Sustainable Construction: Strengthening Strategies and Emerging Frontiers

作者：Ying Peng, Shenruowen Cai, Yutao Huang, Xue-Fei Chen · 发表于：Materials · 年份：2025 · DOI：10.3390/ma18133013 · 被引用次数：5 · 研究领域：Recycled Aggregate Concrete Performance、Microbial Applications in Construction Materials、Innovations in Concrete and Construction Materials

The transformative trajectory of urban development in the contemporary era has engendered a substantial escalation in construction waste generation, particularly in China, where it constitutes approximately 40% of the total solid waste stream. Traditional landfill disposal methodologies pose formidable ecological challenges, encompassing soil contamination, groundwater pollution, and significant greenhouse gas emissions. Furthermore, the unsustainable exploitation of natural sandstone resources undermines energy security and disrupts ecological balance. In response to these pressing issues, an array of scholars and researchers have embarked on an exploratory endeavor to devise innovative strategies for the valorization of construction waste. Among these strategies, the conversion of waste into recycled aggregates has emerged as a particularly promising pathway. However, the practical deployment of recycled aggregates within the construction industry is impeded by their inherent physico-mechanical properties, such as heightened water absorption capacity and diminished compressive strength. To surmount these obstacles, a multitude of enhancement techniques, spanning physical, chemical, and thermal treatments, have been devised and refined. This paper undertakes a comprehensive examination of the historical evolution, recycling methodologies, and enhancement strategies pertinent to recycled aggregates. It critically evaluates the efficacy, cost-benefit analyses, and environmenta...