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Relating Compressive Strength to Heat Release in Mortars



Dale P. Bentz, Tim Barrett, Igor de la Varga, William J. Weiss


Conventionally, isothermal calorimetry and ASTM C186 heat of hydration results are reported on a per mass of cement (powder) basis, with typical units being J/g cement for example. Based on the recognition that it is the filling of porosity with hydration products that is chiefly responsible for strength development in cement-based materials, there may be merit in instead reporting these results on a per unit volume of (initial) water basis. This paper examines a database of well over 200 mortar mixtures to investigate the relationship between heat release and mortar cube compressive strength development. For reasonably low water-to-cementitious materials ratios (w/cm
Journal of ASTM International


Compressive strength, heat release, hydration, isothermal calorimetry, mortar, virtual testing.


Bentz, D. , Barrett, T. , de, I. and Weiss, W. (2012), Relating Compressive Strength to Heat Release in Mortars, Journal of ASTM International, [online], (Accessed June 24, 2024)


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Created September 4, 2012, Updated November 10, 2018