Title:
Superplasticizer and Silica Fume Addition Effects on Heat of Hydration of Mortar Mixes with Low Water-Cementitious Materials Ratio
Author(s):
Roberto C. A. Pinto and Kenneth C. Hover
Publication:
Materials Journal
Volume:
96
Issue:
5
Appears on pages(s):
600-605
Keywords:
admixtures (water-reducing agents); hydration; pozzolans; silica fume; temperature
DOI:
10.14359/663
Date:
9/1/1999
Abstract:
An investigation was performed to assess the influence of silica fume and superplasticizer on the heat of hydration of mortar mixes with low water-cementitious materials ratio. Superplasticizer and silica fume were added in various proportions to a control mix. The temperature rise, total heat generated, and the rate of heat generation were monitored by a quasi-adiabatic calorimeter. Superplasticizer and silica fume increased the early heat generation, whereas superplasticizer retarded early heat generation. The total heat generated was a function of the amount of silica fume; more heat was generated at medium addition of silica fume than at zero or high additions.