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Mechanical properties and adiabatic temperature rise of low heat concrete using ternary blended cement
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논문 기본 정보

Type
Academic journal
Author
KIM SI JUN (경기대학교) KeunHyeokYang (경기대학교) 이경호 (경기대학교) 이성태 (인하공업전문대학)
Journal
한국계산역학회 Computers and Concrete, An International Journal Computers and Concrete, An International Journal Vol.17 No.2 SCIE
Published
2016.1
Pages
271 - 280 (10page)

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Mechanical properties and adiabatic temperature rise of low heat concrete using ternary blended cement
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Abstract· Keywords

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This study examined the mechanical properties and adiabatic temperature rise of low-heat concrete developed based on ternary blended cement using ASTM type IV (LHC) cement, ground fly ash (GFA) and limestone powder (LSP). To enhance reactivity of fly ash, especially at an early age, the grassy membrane was scratched through the additional vibrator milling process. The targeted 28-day strength of concrete was selected to be 42 MPa for application to high-strength mass concrete including nuclear plant structures. The concrete mixes prepared were cured under the isothermal conditions of 5°C, 20°C, and 40°C. Most concrete specimens gained a relatively high strength exceeding 10 MPa at an early age, achieving the targeted 28-day strength. All concrete specimens had higher moduli of elasticity and rupture than the predictions using ACI 318-11 equations, regardless of the curing temperature. The peak temperature rise and the ascending rate of the adiabatic temperature curve measured from the prepared concrete mixes were lower by 12% and 32%, respectively, in average than those of the control specimen made using 80% ordinary Portland cement and 20% conventional fly ash.

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