Study on cementitious properties andhydration characteristics of steel slag

• Autorzy: Wang S. , Wang C. , Wang Q. , Liu Z. , Qian W. , Jin C. , Chen L. , Li L.
• Języki publikacji: EN

Abstrakty

EN

In order to improve the utilization of the steelmaking byproduct steel slag in the concrete industry, this paper mainly studied the cementitious and hydration properties of converter steel slag. X-ray diffraction (XRD), non-evaporable water amount, strength, and particle size distribution were measured and analyzed. The paste with steel slag and water can be slowly hardened, which indicates the weak cementitious capacity of steel slag. The hydration of steel slag is similar to that of cement. The hydration rate of steel slag is much slower than that of cement at the early age, while its rate is higher than cement at the curing age of 90 days. The hydration rate of steel slag increases as its specific surface area (SSA) increases, and the degree of hydration becomes similar in steel slag with varying SSA at the curing age of 180 days. The early-age hydration of cement can be inhibited to some extent when steel slag is added. And the inhibition effect increases as the replacement level of steel slag increases. There is a slow strength development of steel slag blend concrete with a low water-to-binder ratio at the early age, while this influence decreases as age increases. The mineral phases of steel-slag-blend hardened paste mainly includes hydration products (Ca(OH)₂ and C-S-H), inert components (C₂F, magnetite, and RO phase), and unhydrated phases (C₃S, C₂S, gehlenite, and C₁₂A₇).

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2018
• Tom: 27
• Numer: 1
• Opis fizyczny: p.357-364,fig.,ref.

Twórcy

autor

Wang S.

• School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China

autor

Wang C.

• Jiangxi Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou Jiangxi Province 341000, China
• School of Civil Engineering, Hebei University of Engineering, Handan Hebei Province 056038, China
• Tianjin Sunenergy Sega Environmental Science and Technology Co. Ltd, Tianjin 300000, China

autor

Wang Q.

• School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China

autor

Liu Z.

• School of Civil Engineering, Hebei University of Engineering, Handan Hebei Province 056038, China

autor

Qian W.

• School of Civil Engineering, Hebei University of Engineering, Handan Hebei Province 056038, China

autor

Jin C.

• School of Civil Engineering, Hebei University of Engineering, Handan Hebei Province 056038, China

autor

Chen L.

• School of Civil Engineering, Hebei University of Engineering, Handan Hebei Province 056038, China

autor

Li L.

• School of Civil Engineering, Hebei University of Engineering, Handan Hebei Province 056038, China

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Identyfikatory

DOI

10.15244/pjoes/74133