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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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PURPOSES: The scaling of a concrete surface caused by the combined effects of frost and de-icing salts is one of the main reasons for the need to repair transportation infrastructures in cold-climate regions. This study describes the results of attempts to determine the scaling resistance of concrete incorporating mineral admixtures such as fly ash, GGBFS, and silica fume, and subjected to the actions of frost and salt. METHODS : Conventionally, to evaluate the fundamental properties of concrete, flexural and compressive strength measurements are regularly performed. Based on the ASTM C 672 standard, concrete is subjected to 2%, 4%, and 8% $CaCl_2$ salt solutions along with repeated sets of 50 freeze/thaw cycles, and the scaling resistance was evaluated based on the mass of the scale and a visual examination. RESULTS : It was observed that silica fume is very effective in enhancing the scaling resistance of concrete. Meanwhile, concrete incorporating GGBFS exhibited poor resistance to scaling, especially in the first ten freeze/thaw cycles. However, fly ash concrete generally exhibited the maximum amount of damage as a result of the frost-salt attack, regardless of the concentrations of the solutions. CONCLUSIONS: It can be concluded that the scaling resistance of concrete is highly dependent on the type of the mineral admixture used in the concrete. Therefore, to provide a durable concrete pavement for use in cold-climate regions, the selection of a suitable binder is essential.
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참고문헌 (15)
참고문헌 신청
ACI Committee. / 2011 / ACI Building Code Requirements for Structural Concrete and Commentary / American Concrete Institute
Bilodeau, A. / 1992 / Concrete incorporating high volumes of ASTM Class F fly ashes: mechanical properties and resistance to deicing salt scaling and to chlorideion penetration / American Concrete Institute :319~349
Cwirzen, A. / 2005 / Aggregate-cement paste transition zone properties affecting the salt-frost damage of high-performance concretes / Cement and Concrete Research 25(4):671~679
Deja, J. / 2003 / Freezing and de-icing salt resistance of blast furnace slag concretes / Cement and Concrete Composites 25(3):357~361
Heede, P.V. / 2013 / Influence of air entraining agents on deicing salt scaling resistance and transport properties of high-volume fly ash concrete / Cement and Concrete Composites 37:293~303
Bilodeau, A. / 1992 / Concrete incorporating high volumes of ASTM Class F fly ashes: mechanical properties and resistance to deicing salt scaling and to chlorideion penetration / American Concrete Institute :319~349
Cwirzen, A. / 2005 / Aggregate-cement paste transition zone properties affecting the salt-frost damage of high-performance concretes / Cement and Concrete Research 25(4):671~679
Deja, J. / 2003 / Freezing and de-icing salt resistance of blast furnace slag concretes / Cement and Concrete Composites 25(3):357~361
Heede, P.V. / 2013 / Influence of air entraining agents on deicing salt scaling resistance and transport properties of high-volume fly ash concrete / Cement and Concrete Composites 37:293~303
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