Inspirational talk by prof. dr.sc. Jason Ideker

On 18.10.2024. a second inspirational talk within the GREENCO project was held in Zagreb, Croatia, this time by the professor dr.sc. Jason Ideker form Oregon State University, on the topic of alkali-silicate reaction.

Professor Jason Ideker teaches courses related to construction materials, materials based on cement and materials for green construction. As an internationally recognized expert for the alkali-silicate reaction (ASR), Professor Ideker and his team are investigating ways improvement and development of new ASR test methods that predict behavior materials in real buildings, and methods of mitigating ASR. Research work groups are supported by numerous professional and industry organizations such as NCHRP, CalTrans, EPRI, ARPA-E and Imerys Aluminates.

Alkali-silicate reaction (ASR) is a catch-all term for two types of premature deterioration of concrete: alkaline silica reaction (most common) and alkali-carbonate reaction (less common). These forms of decay include chemical reaction between certain types of aggregates and pore solution in concrete. In the presence of moisture this reaction can result in harmful expansion and cracking and can ultimately limit the life of the affected concrete.

Professor Ideker had presented the basic mechanisms, testing methods and methods of preparation of this form degradation of concrete structures.