Recycled Aggregates
摘要
Recycled aggregates (RA) are materials obtained by processing waste concrete, asphalt, bricks, and other construction debris. The primary mechanism of recycling these materials involves their collection, breaking down through mechanical crushing, and then sorting and treating to achieve suitable qualities for reuse in new concrete. This process helps in reducing landfill waste and dependence on natural aggregates. However, the properties of recycled aggregates, such as their higher absorption rates and potential for containing contaminants, vary depending on the source and quality of the waste materials. These characteristics can significantly influence the mixing, setting, and curing processes of concrete, affecting both its fresh and hardened properties.