A Basic Study on the Development of Optimum Carbonation Curing Techniques for Concrete Using Supercritical CO2

초임계 CO2를 활용한 콘크리트의 최적 탄산화양생기법 개발에 관한 기초적 연구

  • 홍성준 (대진대학교, 건축공학과) ;
  • 류동우 (대진대학교, 건축공학과)
  • Published : 2022.04.20

Abstract

This study is a basic study on carbonation curing technology of concrete using supercritical CO2, and carbonation curing was carried out by exposing concrete to supercritical CO2 for a certain period of time. In the case of conventional carbonation curing, long-term curing was performed for several weeks by controlling the concentration of CO2, but by using supercritical CO2, more rapid carbonation curing was carried out using constant temperature and pressure conditions to improve durability through surface modification of concrete. This experiment was conducted with the goal of deriving the optimal carbonation curing conditions by measuring the carbonation depth by exposing concrete for a certain period of time to conditions above the supercritical level. As a result, it was confirmed that the carbonation depth increased as the curing time increased, and the curing time could be shortened compared to the carbonation curing according to the existing CO2 concentration.

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Acknowledgement

본 논문은 2022년국토교통부 국토교통기술촉진연구사업의 연구비 지원(22CTAP-C164096-02)에 의해 수행되었습니다.