CANADIAN JOURNAL OF CIVIL ENGINEERING, vol.37, no.1, pp.125-130, 2010 (SCI-Expanded)
In this study, early hardening and strength gain of mortar samples with prehydration have been studied and effects of prehydrated cement amount and duration on the compressive strength of the mortar have been examined. The compressive strengths and ultrasound pulse velocities, resonance frequencies, bending strengths, and setting times of prepared samples have been determined by conducting tests on 4 cm x 4 cm x 16 cm samples prepared for this purpose at 2, 7, and 28 d. When the setting times are evaluated, the heat released as a result of hydration declines, and the initial heat is reduced. A significant increase in the early compressive strength as an effect of prehydration method has been observed. It is evaluated that prehydration is an economical and practical method that call be enhanced and used in the production of the ready-mix concrete and prefabricated construction materials.