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A platform for research: civil engineering, architecture and urbanism
Effects of dicalcium ferrite on hydration and microstructure of cementitious material
https://orcid.org/0000-0002-0455-847X
https://orcid.org/0000-0003-1864-2258
Abstract Dicalcium ferrite (C2F) is a key component in metallurgical slag, particularly steel slag. Nevertheless, its influence on cement hydration is unclear. This study investigated the composition and surface properties of synthesized C2F and its effects on the compressive strength, hydration heat, hydration degree, and microstructure of blended cement. The results indicated that C2F comprises small lamellar particles. Its incorporation into Portland cement reduces the hydration rate and cumulative hydration heat of blended cement. Despite its low hydration capacity, C2F actively engages in cement hydration, reacting with C-S-H, C4Ac0.5H12, and C4AcH11 to form C3(AF)S0.84H. Furthermore, the loose, lamellar structure of C2F reduces the compactness of the microstructure in blended cement paste. Consequently, C2F imposes a more substantial retarding effect on cement hydration than inert SiO2. This investigation contributes novel theories and insights into the retarding effect of steel slag on cement hydration.
Highlights Dicalcium ferrite was synthesized and characterized. Early-age performance of dicalcium ferrite-blended cement was investigated. Multiple characterized approaches were applied. A novel mechanism for retarding effect of dicalcium ferrite was proposed.
Effects of dicalcium ferrite on hydration and microstructure of cementitious material
https://orcid.org/0000-0002-0455-847X
https://orcid.org/0000-0003-1864-2258
Abstract Dicalcium ferrite (C2F) is a key component in metallurgical slag, particularly steel slag. Nevertheless, its influence on cement hydration is unclear. This study investigated the composition and surface properties of synthesized C2F and its effects on the compressive strength, hydration heat, hydration degree, and microstructure of blended cement. The results indicated that C2F comprises small lamellar particles. Its incorporation into Portland cement reduces the hydration rate and cumulative hydration heat of blended cement. Despite its low hydration capacity, C2F actively engages in cement hydration, reacting with C-S-H, C4Ac0.5H12, and C4AcH11 to form C3(AF)S0.84H. Furthermore, the loose, lamellar structure of C2F reduces the compactness of the microstructure in blended cement paste. Consequently, C2F imposes a more substantial retarding effect on cement hydration than inert SiO2. This investigation contributes novel theories and insights into the retarding effect of steel slag on cement hydration.
Highlights Dicalcium ferrite was synthesized and characterized. Early-age performance of dicalcium ferrite-blended cement was investigated. Multiple characterized approaches were applied. A novel mechanism for retarding effect of dicalcium ferrite was proposed.
Effects of dicalcium ferrite on hydration and microstructure of cementitious material
https://orcid.org/0000-0002-0455-847X
https://orcid.org/0000-0003-1864-2258
Abstract Dicalcium ferrite (C2F) is a key component in metallurgical slag, particularly steel slag. Nevertheless, its influence on cement hydration is unclear. This study investigated the composition and surface properties of synthesized C2F and its effects on the compressive strength, hydration heat, hydration degree, and microstructure of blended cement. The results indicated that C2F comprises small lamellar particles. Its incorporation into Portland cement reduces the hydration rate and cumulative hydration heat of blended cement. Despite its low hydration capacity, C2F actively engages in cement hydration, reacting with C-S-H, C4Ac0.5H12, and C4AcH11 to form C3(AF)S0.84H. Furthermore, the loose, lamellar structure of C2F reduces the compactness of the microstructure in blended cement paste. Consequently, C2F imposes a more substantial retarding effect on cement hydration than inert SiO2. This investigation contributes novel theories and insights into the retarding effect of steel slag on cement hydration.
Highlights Dicalcium ferrite was synthesized and characterized. Early-age performance of dicalcium ferrite-blended cement was investigated. Multiple characterized approaches were applied. A novel mechanism for retarding effect of dicalcium ferrite was proposed.
Effects of dicalcium ferrite on hydration and microstructure of cementitious material
Huo, Binbin (author) / Zhang, Yamei (author)
2023-12-12
Article (Journal)
Electronic Resource
English
Some hydration studies of α-dicalcium silicate
| Elsevier | 1978
Mathematical modelling of hydration of cement: Hydration of dicalcium silicate
| Online Contents | 1987
Mathematical modelling of hydration of cement: Hydration of dicalcium silicate
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Combined hydration of tricalcium silicate and β-dicalcium silicate
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Determining dicalcium ferrite and tetracalcium aluminoferrite in fired dolomite
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