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Dr. Sulapha Peethamparan
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Alkali-activated concrete (AAC) is an emerging technology in the construction materials sector. Being cement-free, AAC is a promising environmentally-friendly alternative to ordinary portland cement (OPC) concrete. Despite the improved performance and sustainability of AAC that has been established through various studies, some major technical challenges still remain in its realization as a viable construction material. One of them is the uncertainty with respect to the alkali-silica reactivity (ASR) durability performance of AAC. It was suggested that the AAC might be more vulnerable to ASR than OPC since a strong alkaline solution is required for the activation process.