Heat of hydration and time-dependent dimensional changes of mass concrete incorporating local Egyptian blended cements /
تأثير أنواع الاسمنت المصرية المختلفة علي حرارة الاماهة والخواص المعتمدة علي الزمن للخرسانة الكتلية
Samiha Emam Abdelaziz Alharty ; Supervised Osama A. Hodhod , Mostafa Abdelmohsen Mostafa
- Cairo : Samiha Emam Abdelaziz Alharty , 2017
- 127 P. : charts , facsimiles ; 30cm
Thesis (Ph.D.) - Cairo University - Faculty of Engineering - Department of Civil Engineering
This study examines the influences of using different Egyptian cement types and supplementary cementitious materials (SCMs) to control the hydration heat, durability, and the time-dependent behavior developed in massive concrete. Three different sorts of cements, two different water types, and three different fly ash ratios were used. For each binder type, two concrete mixes are produced. The results show that the hydration heat decreases with increasing SCM and with using blended cements. Hydration heat was decreased to 88% for slag cement and 79% for limestone cement regarding ordinary portland cement. It was also decreased to 86%, 78%, and 74.5% in case of using 30%, 40%, and 50% fly ash substitution respectively. Also it can be concluded that the maximum shrinkage and permeability values decrease with increasing SCM and with using (CEM II-B-L) and (CEM II-A-S). The shrinkage was decreased by 29% for CEM II-A-S and 5% for CEM II-B-L with respect to CEM I. It was also decreased by 17%, 25%, and 44% in case of using 30%, 40%, and 50% fly ash replacement respectively