The effect of seawater on the hydration of high MgO cements

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1990 (EN)
The effect of seawater on the hydration of high MgO cements (EN)

Kasselouris, V (EN)
Economou, J (EN)
Ftikos, Ch (EN)

N/A (EN)

This investigation concerns the effect of some ions, contained in seawater, on the hydration of cements containing 7% MgO, pure or with 30% pozzolan (Santorin Earth). Pastes prepared from these two cements were cured in five baths containing seawater, deionized water and aq. solutions of SO42-, Mg2+ and Cl- ions respectively for one year. The Mg(OH)2 produced during the hydration of the above cements was determined by DTA-TG, while the hydration phenomena were studied by XRD. It is concluded that the presence of Cl- and SO42- ions does not affect MgO hydration. Mg2+ ions increase the Mg(OH)2 content, mostly by their penetration in the pastes. The beneficial effect of the interground pozzolan is also shown. © 1990. (EN)


Cement Pastes (EN)
Pozzolan (EN)
Santorin Earth (EN)
Cement (EN)
Ions (EN)
Concrete (EN)
High Magnesia Cements (EN)
Magnesium Hydroxide (EN)
Seawater (EN)

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

Cement and Concrete Research (EN)




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