- 혼화재를 조합 사용한 초지연 콘크리트의 응결시간 추정
- ㆍ 저자명
- 한민철,Han. Min-Cheol
- ㆍ 간행물명
- 한국건축시공학회지
- ㆍ 권/호정보
- 2008년|8권 3호|pp.111-117 (7 pages)
- ㆍ 발행정보
- 한국건축시공학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
This study provides the setting time prediction method of super retarding concrete incorporating mineral admixtures at the same time including fly ash(FA), blast furnace slag(BS) based on maturity method. The setting time was retarded, as super retarding agent contents increase and curing temperature decreases. In addition, apparent activation energy by Arrhenius function was ranged from $24{sim}35KJ/mol$ with slightly difference along with mixture proportion. This value is smaller than existing value $30{sim}50KJ/mol$. It is Indicated that equivalent age using setting time can be a proper method to predict setting time and it also exhibited comparable relativity between prediction value and measurement value. Therefore, this study provided setting time prediction value with super retarding agent contents and mineral admixture combination. Setting time prediction equation provided herein is possibly valid for estimating precise setting time of the super retarding concrete at the job site.