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Abstract The description of water soluble calcium silicate species is still subject of controversy because of little experimental literature on this topic. In this study, the complexation of Ca 2 +… Click to show full abstract
Abstract The description of water soluble calcium silicate species is still subject of controversy because of little experimental literature on this topic. In this study, the complexation of Ca 2 + by deprotonated silicate species has been investigated by a calcium ion selective electrode performed under carefully controlled conditions, in which the precipitation of calcium silicate has been avoided as far as possible. The resulting complexation constants are found to be significantly lower than those published in the literature. Our experimental results are supported by DFT modeling highlighting the stability of the different calcium silicate species.
Journal Title: Cement and Concrete Research
Year Published: 2017
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