[논문]High Sulfated Calcium Silicate 시멘트 콘크리트의 염소이온침투저항성 평가

정석만; 양완희; 김현수; 이건철

doi:10.5345/jkibc.2022.22.1.035

High Sulfated Calcium Silicate 시멘트 콘크리트의 염소이온침투저항성 평가
Evaluation of Chloride Ion Penetration Resistance of High Calcium Silicate Cement Concrete 원문보기

한국건축시공학회지 = Journal of the Korea Institute of Building Construction, v.22 no.1, 2022년, pp.35 - 43

정석만 (Department of Architectural Engineering, Korea National University of Transportation) , 양완희 (R&D Center, Withmtech Co., Ltd.) , 김현수 (Department of Building Research, Korea Institute of Construction Technology) , 이건철 (Department of Architectural Engineering, Korea National University of Transportation)

초록
AI-Helper

High Sulfated Calcium Silicate cement(HSCSC) 콘크리트의 성능을 보통포틀랜드시멘트(OPC), 고로슬래그시멘트(S/C)와 비교 검토하고자 하였다. 콘크리트 압축강도 실험결과 초기 3일 재령에서의 High Sulfated Calcium Silicate cement 콘크리트 압축강도 발현율이 보통포틀랜드시멘트 콘크리트의 73.6% 수준으로 다소 적게 확인되었으나, 28일 재령에서 High Sulfated Calcium Silicate cement의 강도 발현율이 상승하여 보통포틀랜드시멘트 대비 약 107.0% 수준으로 소폭 상승하는 것을 확인할 수 있었다. 또한, 콘크리트의 염소이온침투저항성 실험결과 재령 28일의 경우 보통포틀랜드시멘트 대비 고로슬래그시멘트, High Sulfated Calcium Silicate cement 순서로 각각 73.4%, 93.0% 감소하였으며, 재령 56일의 경우 79.1%, 98.3% 감소하여, 우수한 염소이온 침투 저항성능을 확인하였다. 특이사항으로는 보통포틀랜드시멘트, 고로슬래그시멘트 보다 High Sulfated Calcium Silicate cement의 재령 경과에 따른 통과 전하량 감소율이 더 높은 것을 확인할 수 있었다.

Abstract ▼ AI-Helper

The aim of this work was to a comparative review the performance of high calcium silicate cement (HSCSC) and that of ordinary Portland cement(OPC) and blast furnace slag cement(S/C). The result of the compressive test confirmed that the compressive strength development rate of high calcium silicate cement concrete at the age of 3 days was 73.6% that of ordinary Portland cement concrete. However, at the age of 28 days, the strength development rate of high calcium silicate cement increased to about 107.0% compared to ordinary Portland cement. In addition, the test of the chloride ion penetration resistance of concrete showed that at the age of 28 days, the passed charge decreased by 73.4% and 93.0%, respectively, in blast furnace slag cement and high calcium silicate cement compared to ordinary Portland cement, and at the age of 56 days, it decreased by 79.1% and 98.3%, exhibiting excellent resistance to chloride ion penetration. In particular, it was confirmed that the rate of decrease in the passed charge with age was higher in high calcium silicate cement than in ordinary Portland cement and blast furnace slag cement.

주제어

표/그림 (12)

표 Table 1. Experimental factor I
표 Table 2. Mix proportion of mortar specimens
표 Table 3. Experimental factor II
표 Table 4. Mix proportion of concrete specimens
그림 Figure 1. Cement used in the experiment
표 Table 5. Physical properties of cement
표 Table 6. Composition of SSC(percentage by weight)[9]
그림 Figure 2. Preparation for test to resist chloride ion penetration
표 Table 7. Chemical composition of HSCSC constituents
표 Table 8. Physical properties of cement
표 Table 9. Summary of test results measured in hardened concrete specimens
그림 Figure 3. Graph of test results measured on hardened concrete specimens

참고문헌 (12)

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