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A platform for research: civil engineering, architecture and urbanism
Portland limestone calcined clay cement
The claimed subject matter relates to a novel cement comprising Portland cement clinker and a supplementary cementitious material. The supplementary cementitious material comprises a heat treated clay material and an optionally heat treated carbonate material, wherein the clay material has been heat treated optionally together with the carbonate material in such a way that the heat treated clay material is substantially dehydroxylated while the optionally heat treated carbonate material remains substantially carbonated. This can be achieved by premixing the carbonate and clay materials before heat treating to 400-700 C, or heat treating the clay material separately to a temperature of up to 900 C. When used in the final application the cement results in much higher strengths than would be predict from any other combination of these materials.
Portland limestone calcined clay cement
The claimed subject matter relates to a novel cement comprising Portland cement clinker and a supplementary cementitious material. The supplementary cementitious material comprises a heat treated clay material and an optionally heat treated carbonate material, wherein the clay material has been heat treated optionally together with the carbonate material in such a way that the heat treated clay material is substantially dehydroxylated while the optionally heat treated carbonate material remains substantially carbonated. This can be achieved by premixing the carbonate and clay materials before heat treating to 400-700 C, or heat treating the clay material separately to a temperature of up to 900 C. When used in the final application the cement results in much higher strengths than would be predict from any other combination of these materials.
Portland limestone calcined clay cement
HERFORT DUNCAN (author) / DAMTOFT JESPER SAND (author)
2015-12-15
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
Sulfate resistance of calcined clay – Limestone – Portland cements
| Elsevier | 2018
Use of Grinding Aids for Grinding Ternary Blends Portland Cement-Calcined Clay-Limestone
| Springer Verlag | 2019