Field Application on Mass Concrete of Combined Coarse Particle Cement and Fly-Ash in Mat Foundation
조분(粗粉) 시멘트와 플라이애시를 복합 치환한 매트 기초 매스콘크리트의 현장적용

Cheon-Goo Han, Duk-Bae Jang, Chung-Sub Lee
2010 Journal of the Korea Institute of Building Construction  
This study carried out a Mock-up test to apply Low-heat Cement (CF) that is adjusted to a fineness of 3,000±200 cm 2 /g by substituting Coarse particle Cement (CC) and fly ash with ordinary Portland Cement (OPC), then applied it on-site. The result of the test is as follows. The Mock-up test showed that the amount of admixture in CF increased SP agent and AE agent slightly more compared to OPC, while temperature history showed that the highest temperature of CF was around 6∼10℃ lower than that
more » ... 0℃ lower than that of OPC. Compressive strength in CF was low compared to that of OPC, but the strength width became narrow at the age of 28 days, which is not considered to be significant. In on-site application, slump, air content and chloride content all satisfied the target values, while the temperature history showed that the highest temperature in the center by each cast was about 34℃ in the first cast, 42℃ in the second cast, and 39℃ in the third cast. Compressive strength of specimen for strut management showed low value compared to standard curing, but its strength was reduced at the age of 28 days.
doi:10.5345/jkic.2010.10.4.011 fatcat:f5matw626vdffbhfjdhgar3uoy