서냉 및 급냉 고로슬래그미분말을 활용한 시멘트 콘크리트 포장의 탄산화- 스케일링 복합열화 저항성에 대한 실험적 연구

다국어 초록 (Multilingual Abstract)

PURPOSES : This paper presents the experimental results of tests conducted on concrete produced with air-cooled (AS) and water-cooled (WS) ground blast-furnace slag exposed to multi-deterioration environments of carbonation and scaling.
METHODS : Carbonated and uncarbonated concrete specimens were regularly monitored according to the ASTM C 672 standard to evaluate the durability of concrete exposed to both scaling and combined carbonation and scaling conditions. Additionally, mechanical properties, such as compressive strength, flexural strength, and surface electric resistivity, were analyzed. RESULTS : It was found that concrete specimens produced with AS and WS had a beneficial effect on the mechanical properties because of the latent hydraulic properties of the AS and WS mineral admixtures. Moreover, carbonated concrete showed good scaling resistance in comparison to uncarbonated concrete, particularly for concrete produced with AS and WS. CONCLUSIONS : The improved scaling resistance of carbonated concrete showed that AS is a suitable option for binders used in cement concrete pavements subjected to combined carbonation and scaling.

목차 (Table of Contents)

• ABSTRACT
• 1. 연구의 배경 및 목적
• 2. 실험개요
• 2.1. 사용재료
• 2.2. 콘크리트 배합
• 2.3. 실험방법
• 3. 실험결과 및 고찰
• 3.1. 콘크리트의 강도특성
• 3.2. 콘크리트의 표면전기저항성
• 3.3. 콘크리트의 탄산화 침투깊이
• 3.4. 콘크리트의 스케일링 저항성
• 3.5. 콘크리트의 탄산화-스케일링 복합열화 저항성
• 3.6. 콘크리트의 스케일링 저항성에 대한 탄산화의 영향
• 4. 결론 및 요약
• REFERENCES

참고문헌 (Reference)

1 이승태, "서냉슬래그 미분말을 적용한 콘크리트의 역학적 성능 및 내구성 평가" 한국산학기술학회 18 (18): 356-363, 2017

2 이승태, "서냉 및 급냉슬래그를 적용한 콘크리트의 복합열화 저항성" 한국도로학회 20 (20): 11-18, 2018

3 이승태, "광물질혼화재를 적용한 콘크리트의 스케일링 저항성 평가" 한국도로학회 17 (17): 47-53, 2015

4 Zhang, D, "Surface scaling of CO2-cured concrete exposed to freeze-thaw cycles" 27 : 137-144, 2018

5 Coppio, GJL, "Surface electric resistivity and compressive strength of concrete with the use of waste foundry sand as aggregate" 212 : 514-521, 2019

6 Ahani, RM, "Salt scaling resistance: The effect of curing and pre-saturation" 26 : 558-564, 2012

7 Allahverdi, A, "Resistance of chemically activated high phosphorous slag content cement against frost-salt attack" 98 : 18-25, 2014

8 Ozbakkaloglu, T, "Normal and high strength concretes incorporating air-cooled blast furnace slag coarse aggregates: Effect of slag size and content on the behavior" 126 : 138-146, 2016

9 Czarnecki, L, "Modelling of concrete carbonation; is it a process unlimited in time and restricted in space?" 63 : 43-54, 2015

10 Amini, K, "Linking airvoid system and mechanical properties to salt-scaling resistance of concrete containing slag cement" 104 : 2019

11 Morioka, M, "Influence of fine powder of air-cooled blast furnace slag on fluidity and its mechanism" 56 : 72-77, 2002

12 Wu, Z, "Effects of de-icing salts on the scaling resistance of concrete" 27 : 04014160-, 2015

13 Valenza, JJ, "A review of salt scaling: II. Mechanism" 37 : 1022-1034, 2007