Abstract
This article focuses to influence of a pre-hydrated cement suspensions on hardening cement paste properties investigation. The pre-hydration was occurred by 2-th, 4-th 6-th hours during forced mixing. Changes of particle dispersion caused by hydration were determined. It is shown that by hydrolysis increase particles dispersion and subsequently increases quantity of new hydrate formations. Influence of the pre-hydrated cement suspensions on hardening cement paste properties is determined. It is shown that application pre-hydrated addition leads to increasing a cement paste water demand by 12, 17 and 14% for duration of hydration by 2, 4 and 6 hours consequently and to decreasing setting time. It caused by generating supplementary new formations of crystalline hydrate with subsequently increasing rate cement paste structuration. Rate of hardening was increased with increasing duration of the pre-hydration for 10% pre-hydrated cement addition. Obtained results may recommended the addition of pre-hydrated cement in form of cement suspension as cement gel for concrete nanomodification
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