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Experimental Study on Setting Time of Cement Paste Mixed Accelerating Admixtures
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 Title & Authors
Experimental Study on Setting Time of Cement Paste Mixed Accelerating Admixtures
Heo Gweon; Choi Hong-Shik; Yi Seong-Tae;
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 Abstract
The setting time is a very important factor affecting the quality of tunnel lining and reinforcement of inclined slope etc. Currently, however, the quality criteria of accelerating admixture to improve it is not established well. In this study, evaluation on setting time measuring methods of cement mixed a accelerating admixture (AA) was performed using Gillmore and Vicat needle test methods. For both test methods, the setting time for addition at a time was better than post addition regardless of initial setting and final setting. For Gillmore needle test method, two types of measuring methods were selected and it is noted that setting time with cement type under the same accelerating admixture can be different. Accordingly, manufacturing company shall develop a less sensitive accelerating admixture to cement type. For Vicat needle test method, six types of measuring methods were used and a proper measuring method of the admixture were proposed as follows: (1) the temperature of materials used shall be controlled exactly and (2) to evaluate its properties, an admixture usage of (ratio of cement weight) is recommended.
 Keywords
setting time;accelerating admixture;cement paste;
 Language
Korean
 Cited by
1.
타블렛 형태 급결제가 콘크리트의 응결시간 및 조기강도에 미치는 영향에 관한 연구,류재석;이용수;

한국콘크리트학회논문집, 2011. vol.23. 3, pp.347-352 crossref(new window)
2.
길모어침에 의한 숏크리트용 급결제의 품질시험방법에 대한 고찰,김춘호;

한국구조물진단유지관리공학회 논문집, 2011. vol.15. 6, pp.195-200 crossref(new window)
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숏크리트 모르타르의 성능에 대한 급결제 종류 및 고로슬래그 미분말 대체율의 영향,이승태;김성수;김동규;박광필;

한국구조물진단유지관리공학회 논문집, 2013. vol.17. 1, pp.76-84 crossref(new window)
1.
Experimental study on the setting time of cement paste mixed with accelerating admixtures based on C3A, Advances in Cement Research, 2010, 22, 3, 149  crossref(new windwow)
2.
Effect of Types of Accelerators and Replacement Levels of GGBFS on the Performance of Shotcrete Mortars, Journal of the Korea institute for structural maintenance and inspection, 2013, 17, 1, 76  crossref(new windwow)
 References
1.
김진철, 류종현, 안태송, '숏크리트용 급결제의 품질, 응결 및 경화특성', 한국콘크리트학회 봄학술발표회논문집, 14권 1호, 2002, pp.323-328

2.
KCI-SC 102, '숏크리트용 급결제 품질규격' 콘크리트 표준시방서, 한국콘크리트학회,1999

3.
현석훈, 한기석, '숏크리트 품질에 미치는 재료 및 시공 조건의 영향' 한국콘크리트학회 봄학술발표회논문집,6 권 1호 1994, PD.277-232

4.
ASTM C 1102-94, Standard Test Method for Time of Setting of Portland-Cement Pastes Containing Accelerating Admixtures for Shotcrete by the Use of Accelerating Admixtures for Shotcrete by the Use of Gillmore Needles, ASTM, 1994, 2pp

5.
KS L 5108, '비카트 침에 의한 수경성 시벤트의 응결 시간 시험 방법', 한국표준협회(KSA), 2002, 9pp