Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Optimum Mix Proportion of Latex Modified Repair Mortar for Agricultural Concrete Structures

농업용 콘크리트 구조물을 위한 라텍스 개질 보수용 모르타르의 적정 배합비 도출

  • 원종필 (건국대학교 사회환경시스템공학과) ;
  • 이재영 (건국대학교 대학원 사회환경시스템공학과) ;
  • 박찬기 (건국대학교 BK21 사회기반시설물 유지관리 기술사업팀) ;
  • 박성기 ((주)승화이엔씨 기술연구소)
  • Published : 2007.03.31
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Abstract

The service life of agricultural concrete structures is designed in about 30 to 100 years, but actual service lift is estimated in an average 18 years. Therefore, as the service life of the agricultural concrete structures increases, necessity of repair by aging from various environment condition exposure increases. This study was to determinate the optimum mix proportion of latex modified repair mortar and to improve the durability performance of agricultural concrete structures. The physical and mechanical tests of latex modified repair mortar were performed. Tests of flow, compressive strength, flexural strength and bond strength tests were conducted. Test results show that the optimum nex proportion of latex modified repair mortar, when used in 5% latex volume fraction (weight of cement), 1.5% antifoaming agent (weight of latex), 0.2% PVA fiber volume fraction, 1:2 (binder-sand ratio), 10% silica fume replacement ratio (weight of cement), could result in best performance for the repair of agricultural concrete structures.

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References

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