STP897: Effects of Ground Granulated Blast-Furnace Slags on Some Properties of Pastes, Mortars, and Concretes

    Dubovoy, VS
    Research engineer, senior research engineer, consultant, and senior research engineer, Construction Technology Laboratories, a Division of the Portland Cement Association, Skokie, IL

    Gebler, SH
    Research engineer, senior research engineer, consultant, and senior research engineer, Construction Technology Laboratories, a Division of the Portland Cement Association, Skokie, IL

    Klieger, P
    Research engineer, senior research engineer, consultant, and senior research engineer, Construction Technology Laboratories, a Division of the Portland Cement Association, Skokie, IL

    Whiting, DA
    Research engineer, senior research engineer, consultant, and senior research engineer, Construction Technology Laboratories, a Division of the Portland Cement Association, Skokie, IL

    Pages: 20    Published: Jan 1986


    Abstract

    Tests were performed under separate contracts at different times for three manufacturers of ground granulated blast-furnace slag to determine the performance of their products with portland cement. Physical tests were performed on pastes, mortars, and concretes to determine both freshly mixed and hardened properties. The effects of gypsum addition, fineness of slag, and levels of replacement in cement-slag combinations were evaluated. Physical tests performed on pastes and mortars included time of setting, compressive strength, and volume stability. In the mortar compressive strength series, various curing regimens were evaluated with respect to strength development. Included were normal moist curing at 23°C (73°F) and 4.4°C (40°F) and 100% relative humidity, and accelerated atmospheric curing [71°C(160°F)] and 100% relative humidity. Tests conducted on concretes containing slag included compressive strength, freeze-thaw durability, and resistance to deicer chemicals (scaling). Measurements of air-void systems of hardened concretes were made. Results generally show that use of slag can be beneficial without resulting in significant technical problems or adverse construction problems.

    Keywords:

    accelerated curing, air entrainment, blast furnace slag, blended cements, cold weather construction, compressive strength, concrete durability, curing, drying shrinkage, durability, fineness, freeze-thaw durability, granulation, gypsum, heat of hydration, mineral admixtures, scaling, setting, slag


    Paper ID: STP36390S

    Committee/Subcommittee: C01.90

    DOI: 10.1520/STP36390S


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