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TitleCalcium hydroxide curing for accelerated carbonation testing of high volume fly ash cementitious blends
Author(s)Reis, Rui
Camões, Aires
Ribeiro, Manuel
Malheiro, Raphaele Lira Meireles Castro
KeywordsCalcium hydroxide
Fly ash
Issue dateJun-2016
PublisherUniversidad Politécnica de Madrid / Technical University Madrid
CitationReis R., Camões A., Ribeiro M., Malheiro R. Calcium Hydroxide Curing for Accelerated Carbonation Testing of High Volume Fly Ash Cementitious Blends, II International Conference on Concrete Sustainability, ICCS16, pp. 482 490, 2016
Abstract(s)During wet curing, the alkali concrete compounds, such as calcium hydroxide, can be leached out to the curing solution, due to the pH gradient between concrete and curing solution. In the presence of high volume fly ash cementitious blends, there is a decrease in concrete pH that may further magnify the problem. In this context it was carried out a research in mortars with an original composition of high volume fly ash and calcium hydroxide. These were exposed to water curing and water saturated with calcium hydroxide curing. The results show that the introduction of calcium hydroxide in the curing solution, provides a slightly enhancement of carbonation resistance. Based on the obtained results, the incorporation of calcium hydroxide in the initial composition seems to be useful to develop extra strength to carbonation of high volume of fly ash concrete.
TypeConference paper
AccessOpen access
Appears in Collections:C-TAC - Comunicações a Conferências Internacionais

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