Potential pozzolanicity of Algerian calcined bentonite used as cement replacement: optimisation of calcination temperature and effect on strength of self-compacting mortars
作者： Zine El-Abidine Laidani , Benchaa Benabed , Rajab Abousnina , M. Kamal Gueddouda , M. Jamal Khatib
DOI: 10.1080/19648189.2020.1713898
关键词:
摘要: The effect of using calcined bentonite (CB) as a partial replacement for Ordinary Portland cement (OPC) in self-compacting mortar (SCM) is investigated. pozzolanicity this clay evaluated the strength activity index and TG/ATD analysis. SCM has been replaced with CB at 0, 5, 10, 15, 20, 25 30% by mass cement. on fresh properties examined mini-slump flow V-funnel time. compressive determined age 3, 7 28days, ultrasonic pulse velocity (UPV), hardened density water absorption are 28days. behaviour exposed to high temperature also studied. results indicate that significantly decreased flowability SCM, but these good enough SCC production. Incorporating 10 15% improves UPV. Water tends increase slightly an content there decrease amount increases. containing stronger when than those normal (23C).
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