A Study on the Use of Pit Sand and Sea Sand as the Fine Aggregate in Concrete

콘크리트용 잔골재로서 산사.해사의 활용방안에 관한 연구

  • 윤상대 (농어촌진흥공사 농공기술연구소 수석연구원) ;
  • 신의근 (농어촌진흥공사 농공기슬연구소 책임연구원) ;
  • 배수호 (농어촌진흥공사 농공기술연구소 연구원(중앙대학교 토목공학과 박사과정))
  • Published : 1993.04.01

Abstract

Due to the recent shortage of river sand resulting from a rapid growth of concrete construction, sea sand and pit sand are increasingly used in stead. It is , however, well noted that non-washed sea sand used in reinforced concrete causes to corrode reinforcing steel and to incur cracks in concrete, and thus eventually result in damage to concrete. Moreover, many sources of pit sand in our country are randomly used without experimental research for its applicability to concrete construction. The purpose of this research to activate the usage of pit sand and sea sand for concrete construction to solve the recent shortage of river sand. Followings have been experimentally investigated : 1)Physical properties of pit sand and sea sand, 2)Compressive strength of mortar on the weight of pit sand passing through No.200 sieve, 3) Compressive strength of mortar on the chloride content of sea sand, 4) Compressive strengths of concrete using pit sand and sea sand, respectively, 5)Corrosion propagatio in reinforcing steel on the chloride concent, of sea sand, and 6)etc.

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