The effect of ground granulated blast furnace slag (GGBFS) on corrosion inhibition and reduced hydration heat in concrete was investigated in this study. Massive concrete structures are vulnerable to thermal crack by hydration heat. In view of this, adiabatic temperature rising tests were carried out for different water-binder ratios (water to cement+GGBFS) of 43.2 per cent to 47.3 per cent, while replacing 15 per cent to 50 per cent of cement with the same weight of GGBFS. In addition, the corrosion protection performance was evaluated using cylindrical specimens embedded with steel reinforcement. The specimens were fabricated using ordinary Portland cement and GGBFS in combined three water-binder ratios and two levels of chloride ion. The corroded area of embedded reinforcing bars was measured by the high-pressure steam curing method specified in KS F 2561. The results indicated that the use of replacement GGBFS was very effective in reducing hydration heat and the corroded area of the embedded reinforcing bars decreased as the replacement GGBFS increased. However, the corroded area of the reinforcing bars was proportional to the number of autoclave cycles and the amount of chloride ion added. It could be observed from this experiment that compressive strength, reduction of hydration heat, and corrosion inhibition performance were most excellent when 50 per cent of cement was replaced by the same weight of GGBFS.


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    Title :

    Corrosion resistance and hydration heat of concrete containing ground granulated blast furnace slag


    Additional title:

    KSCE J Civ Eng


    Contributors:

    Published in:

    Publication date :

    2003-07-01


    Size :

    6 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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