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Protocols for investigating the reactivity of aggregates and alkali thresholds for ASR prevention

Autor: Nsiah-Baafi, E, Vessalas, K, Thomas, P, Sirivivatnanon, V

Alkali in concrete pore solution and reactive silica in aggregate are integral features required for alkalisilica reaction (ASR). When high amounts of alkali are present, expansive ASR gel forms that cause cracking of concrete. Thus, limits have been

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______363::e8a6b696739956dad4bbde690439cc28
https://hdl.handle.net/10453/149270

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The ability of SCMs to mitigate ASR in cements of higher alkali contents assessed by pore solution method

Autor: Tapas, MJ, Sofia, L, Vessalas, K, Thomas, P, South, W, Sirivivatnanon, V, Scrivener, K

This study reports on the efficacy of supplementary cementitious materials (SCMs) to mitigate ASR when used in conjunction with cement of higher alkali contents (up to 1%Na2Oeq). The expansion of concrete prisms immersed in simulated pore solution wa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______363::34d63118dfb9d787b03e8ec4a78ad1db
https://hdl.handle.net/10453/149271

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Dissolution behaviour of SCMs in alkaline environment and mechanisms behind ASR mitigation

Autor: Tapas, MJ, Vessalas, K, Thomas, P, Sirivivatnanon, V

Fly ash and slag are supplementary cementitious materials (SCMs) commonly used to mitigate alkali-silica reaction (ASR). However, future supply of these SCMs is at risk due to a global push to reduce coal-fired energy production and increased steel r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od_______363::f5c4c632ca3aab94805a8232acc7188b
https://hdl.handle.net/10453/149274

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