Electrochemical lithium migration to mitigate alkali-silica reaction in existing concrete structures

Alkali-silica reaction (ASR) is a deterioration process that affects the durability of concrete structures worldwide. During the reaction, hydroxyl and alkali ions present in the pore solution react with reactive silica from the aggregate, forming a hygroscopic ASR gel. Alternatively, the silica structure is attacked by hydroxyl ions and the...

The Deteriorating Impact of Alkali-Silica Reaction on Concrete: Expansion and Mechanical Properties

The assessment of concrete structures affected by alkali-silica reaction (ASR) is a complex problem due to the multiscale nature of this long-term phenomenon. The reaction starts within the concrete constituents with the formation of an expansive alkali-silica gel at reaction products level. Being the expansive gel confined within the concrete...