Journal of the Korea Institute of Building Construction (한국건축시공학회지)

The Korean Institute of Building Construction (한국건축시공학회)
권호 표지
DOI QR코드

DOI QR Code

Evaluation of Early Compressive Strength of Concrete Using Early Strength Improvement Type Cement and Early Strength Activator

조기강도 개선형 시멘트 및 초기수화 촉진 혼화제를 사용한 콘크리트의 조기압축강도 발현특성 평가

  • Park, Gyu-Yeon (Department of Architectural Engineering, Chungnam National University) ;
  • Kim, Gyu-Yong (Department of Architectural Engineering, Chungnam National University) ;
  • Choe, Gyoeng-Choel (Department of Architectural Engineering, Chungnam National University)
  • Received : 2014.04.02
  • Accepted : 2014.05.20
  • Published : 2014.08.20
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, revelation performance of concrete at early age according to types of cement, water reducing ratio of high performance superplasticizer and mixing of accelerator for early hydration was examined aiming for reduction of construction period of framework through securing strength at early age of concrete. It was observed that strength at early age, 5MPa in 12hours, 14MPa in 18hours, is secured by early strength improvement type cement and using promotion admixture for early hydration which are Sodium persulfate, Potassium hydroxide. Therefore cost reduction is expected to be possible in construction site by reducing construction period of frame work.

본 연구에서는 콘크리트의 조기강도 확보를 통해 골조공기를 단축하는 것을 목표로 하여 시멘트 종류, 고성능감수제의 감수율, 초기수화 촉진 혼화제의 혼입에 따른 콘크리트의 조기강도 발현성능을 검토하였다. 조기강도 개선형 시멘트와 Sodium persulfate, Potassium hydroxide의 초기수화 촉진물질에 의해 12시간에 5MPa, 18시간에 14MPa의 조기강도를 확보할 수 있는 것으로 나타났다. 이를 통해 건설현장에서 거푸집의 골조공기를 단축시켜 원가절감이 가능할 것으로 기대된다.

Keywords

References

  1. Kim DH, Kim MJ, Lee SH. An Experimental Study on Reduction of Workin Period of Concrete using High Early Strength Binder. Proceedings of the fall Symposium of the Korea Concrete Institute;2008 Nov 7; Ilsan, Korea; Korea Concrete Institute; 2008 p. 513-6
  2. Jung JH, Lee G, Hong GH, Lee CH. An Analysis on Difficulties and Delay Factors for the Development and Application of Technologies for Reduction of Construction Duration. Journal of Architectural Institute of Korea. 2010 Jan;26(1):121-8
  3. Kim MH, Lee SH, Kang SP, Khil BS, Joo JH. Development of early strength of high-strength cocrete according to curing temperature for application of system form. Journal of the Korea Concrete Institute. 2001 Dec;13(6):536-43
  4. Kim KM, Park SJ, Hwang IS, Kim KH, Practical Application of High Early Strength Type Concrete Using High Early Strength Type Binder, Proceedings of the Fall Symposium of Architectural Institute of Korea; 2009 Oct 24; Chuncheon, Korea: Architectural Institute of Korea; 2009. p. 471-4
  5. Lee SS, Song HY, Lee JH, An experimental study on the early strength development properties of concrete according to curing condition and used materials, Journal of the Korea Concrete Institute. 2008 Dec ;20(6):721-9 https://doi.org/10.4334/JKCI.2008.20.6.721
  6. Han CG, Hwang IS, Lee SH, Kim GD. Properties of Strength Development of Concrete at Early Age with Water Cement Ratio and Cement Factor. Journal of Architectural Institute of Korea. 2004 Apr;20(4):77-84
  7. Park KY, Kim YR, KIM GY. Early Strength Development Properties of Concrete Using Early Strength Improvement Type Cement. Journal of the Korea Institute of Building Construction. 2013 Jun;13(3):227-34 https://doi.org/10.5345/JKIBC.2013.13.3.227