• Title/Summary/Keyword: Portland

Search Result 1,233, Processing Time 0.03 seconds

The Effect of Meta-Kaolin Replacement on Alkali-Silica Reaction (메타카올린 치환에 따른 알칼리-실리카 반응 팽창 저감효과)

  • Jun Ssang Sun;Lee Hyomin;Jin Chi Sub;Hwang Jin Yeon
    • Proceedings of the Korea Concrete Institute Conference
    • /
    • 2004.05a
    • /
    • pp.360-363
    • /
    • 2004

  • The effectiveness of Meta-Kaolin to prevent detrimental expansion due to alkali-silica reaction was investigated through the ASTM C 1260 method. Reactive aggregate used is a metamorphic rock. The replacement proportions of portland cement by Meta-Kaolin were 0, 5, 10, 15, 25 and 35 percent, respectively. The results indicate that 25 percent replacement of portland cement by Meta-Kaolin seems to be most effective to reduce alkali-silica reaction expansion under this experimental conditions.

  • PDF

Influence of Ready mixed Concrete quality according to change temperature of portland cement (반입된 시멘트 온도변화에 따른 레미곤 품질의 영향)

  • 조일호;양재성;김진희
    • Proceedings of the Korea Concrete Institute Conference
    • /
    • 2000.04a
    • /
    • pp.243-246
    • /
    • 2000

  • In this study, the influence of workability and strength of the concrete according to change temperature of portland cement were investigated by measurements of slump, air content and compressive strength.. As a result, ready mixed concrete using 5-20% mineral admixtures such as fly ash, blast furnace slag were desirable to prevent the increase in workability and strength of concrete in summer season