Effect of TEA on Acceleration Shotcrete

숏크리트용 급결제에 미치는 트리에탄올아민의 영향

  • Chun, Yong-Jin (Department of New Material & Applied Chemistry, Chungwoon University) ;
  • Cho, Suk-Hyeong (Department of Hi-Technology Material & Applied Chemistry, Hyejeon College) ;
  • Hong, Young-Ho (Department of Hi-Technology Material & Applied Chemistry, Hyejeon College) ;
  • Lee, Gun-Jik (Insung Powdertech Co. Ltd.)
  • 전용진 (청운대학교 신소재응용화학과) ;
  • 조석형 (혜전대학교 신소재응용화학과) ;
  • 홍영호 (혜전대학교 신소재응용화학과) ;
  • 이건직 (인성파우더테크(주))
  • Received : 1999.06.09
  • Accepted : 1999.11.11
  • Published : 1999.12.10

Abstract

In this study the effect of organic additive, triethanolamine(TEA), and temperature change of accelerator for shotcrete was studied. Then the amount of accelerator, temperature and W/C were experimentally investigated. Effects of hydration time and hydration heat of concrete on organic additive amount were analysed by DSC, SEM and XRD. We found that the hydration heat was increased and hydration time was decreased with TEA(<5 wt %). The order of hydration rate of potassium accelerator was PA < PC-3 < PC-5 < PC-8.

Keywords

hydration time;shotcrete;triethanolamine(TEA);accelerator

References

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