Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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Durability Evaluation of Concrete Using Fine Sand of Nakdong-River

  • Kwon, Soon-Oh (Department of Civil Engineering, Andong National University) ;
  • Bae, Su-Ho (Department of Civil Engineering, Andong National University) ;
  • Lee, Hyun-Jin (Department of Civil Engineering, Andong National University)
  • Received : 2014.09.20
  • Accepted : 2014.09.25
  • Published : 2014.09.30
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Abstract

It is strongly needed to investigate the fine sand as an alternative fine aggregate of well-graded river sand because the fine sand which is being enormously distributed in the midstream and downstream of Nakdong-River in Korea has a poor grading but good quality as a fine aggregate for concrete. Thus, the purpose of this experimental research is to evaluate the durability of concrete using the fine sand to utilize it actively as a fine aggregate. For this purpose, the concrete specimens using different fine sand were made for the specified concrete strength of 35MPa, and then their durability such as the resistance to freezing and thawing and carbonation, and drying shrinkage were evaluated. It was observed from the test results that the resistance to freezing and thawing and carbonation of concrete using the fine sand was similar to that of concrete using reference sand, but the drying shrinkage of concrete using the fine sand with small fineness was comparatively lager than that of concrete using reference sand.

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References

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