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Research on the Hydration Mechanism of Portland Cement with Magnesium Slag

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Abstract:

Magnesium slag is a kind of industrial waste during the silicothermic process for magnesium reduction which has potential hydration activity. By adding 20% to 50% of magnesium slag into Portland cement, the influence principle of the additive amount of magnesium slag on the pozzolanic activity is investigated through performance testing and hydration products analysis. During the early period of hydration process, the strength of pozzolanic effectiveness ratio weakens with the increasing additive amount of magnesium slag, while during the later period of hydration process with the additive amount of magnesium slag less than 40%, the strength of pozzolanic effectiveness ratio increases with increasing additive amount of magnesium slag. The activity index of magnesium slag increases with the increase of period and additive amount, and the strength brought by hydration of magnesium slag is a key source of the strength improvement of Portland cement with magnesium slag.

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Periodical:

Applied Mechanics and Materials (Volume 576)

Pages:

57-62

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.576.57

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Online since:

June 2014

Authors:

Junping Deng*, Xiao Liang Wang, Yi Ping Guo

Keywords:

Hydration Mechanism, Magnesium Slag Cement, Pozzolanic Activity

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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