The 2024 International Conference on Sustainable Energy and Environmental Technology for Circular Economy

Mitigation of alkali silica reaction by using fine powder of reactive aggregate

Not scheduled

20m

Building 6, Floor 18-19 (Department of Mechanical Engineering, Faculty of Engineering, Kasetsart University, Bangkok, Thailand)

Speaker

Thanawat Meesak (Kasetsart University)

Description

This study investigated the mitigation of chemical deterioration of concrete called alkali silica reaction (ASR) by using reactive aggregate powder. A reactive aggregate, Rhyolite, was chosen for this study. The aggregate was crushed and sieved with fine powder passing through sieve no. 100 was used as partial cement replacement in this study. The partial cement replacement of 10%, 20%, and 30% was studied. The mitigation effect was determined by performing accelerated mortar bar test according to ASTM C1260. It was found that the use of fine powder of crushed reactive aggregate could reduce the expansion caused by the alkali silica reaction.