Скачать или смотреть Preventing and Assessing Alkali-Aggregate Reaction (AAR) in Recycled Concrete Aggregates

Title: Preventing and Assessing Alkali-Aggregate Reaction (AAR) in Recycled Concrete Aggregates: Challenges and Research Needs

Presented By: Leandro Sanchez, University of Ottawa

Description: Pressure is mounting to decrease the carbon footprint of concrete construction. In this context, the use of recycled concrete aggregates (RCA) is amongst the most promising alternatives. Over the last decades, an important amount of information and data have been gathered particularly on the short and mid-term performance of RCA-made concrete. However, RCA is currently not as much used as it could be due to the lack of guidelines and quality control, especially regarding its durability and long-term performance. This work discusses the state of the art and the current practices related to the prevention and assessment of alkali-aggregate reaction (AAR) in RCA-made concrete. It states the current challenges and presents the potential for further studies in the field.