This paper documents the use of an isothermal calorimeter as a scanning tool to evaluate early-age behavior of high-volume fly ash mixtures. A series of paste and mortar mixtures containing different fly ashes (one Class C fly ash and two Class F fly ashes) with replacement levels ranging from 20% to 60% and high- and low-alkali cement was evaluated. Materials testing included ASTM C109, compressive strength of mortar cubes at different ages; ASTM C1437, flow; ASTM C403, time of setting; and ASTM C1679, isothermal calorimetry. In most cases, for the same water–binder ratio (0.40) and replacement level, Class C fly ash mixtures exhibited higher strength but delayed setting compared with Class F fly ash mixtures. Isothermal calorimetry proved to be a good scanning tool for predicting setting time and early-age compressive strength and for identifying materials incompatibility.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Isothermal Calorimetry as a Tool to Evaluate Early-Age Performance of Fly Ash Mixtures


    Additional title:

    Transportation Research Record: Journal of the Transportation Research Board


    Contributors:


    Publication date :

    2013-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Using Superpave Performance Tests To Evaluate Asphalt Mixtures

    Anderson, R.Michael | Online Contents | 1999


    Using Superpave Performance Tests To Evaluate Asphalt Mixtures

    Anderson, R. Michael / Bukowski, John R. / Turner, Pamela A. | Transportation Research Record | 1999


    Determination of the catalytic activity of binuclear metallohydrolases using isothermal titration calorimetry

    Pedroso, M. M. / Ely, F. / Lonhienne, T. et al. | British Library Online Contents | 2014


    Using Isothermal Calorimetry to Predict Setting Time of Cement-Based Materials (CBMs)

    Vishavkarma, Arvind / Harish, Kizhakkumodom Venkatanarayanan | Springer Verlag | 2021