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A platform for research: civil engineering, architecture and urbanism
Properties of mortars based on β-belite-metakaolinite-hydrated lime binder system
Highlights New process for the production of β-belite cement. Properties of β-belite-metakaolinite hydrated lime mortars over one year of curing. Impact of content of β-belite cement on mineral composition and properties of mortars. Improvement in the shrinkage, mechanical properties and freeze and thaw resistance.
Abstract A novel β-belite cement was prepared, characterized (by chemical and phase composition, particle size distribution, bulk density, specific surface area) and incorporated into mortars based on a mixed binder β-belite-metakaolinite-hydrated lime with different contents of β-belite cement (0, 20, 40, 60, 80 and 100 wt.%). The metakaoline:hydrated lime weight ratio of 1:1 and binder:sand weight ratio of 1:3 were observed in all mortars. The effect of the β-belite cement fraction on the properties of fresh mortars (water:binder ratio needed to achieve the required mortars consistency and initial setting time), on the phase composition (X-Ray diffraction phase analysis and thermogravimetric analyses) and on the structural properties of mortars (compressive strength, flexural strength, bulk density, water absorption, water absorption coefficient, shrinkage) over 1 year of curing was investigated. Freeze and thaw resistance of the mortars after 1 year of curing was also evaluated. Partial replacement of metakaolinite-hydrated lime binder with β-belite cement affected all investigated mortar properties. Significant improvements in mechanical properties and resistance to freezing and thawing cycles were the main advantages.
Properties of mortars based on β-belite-metakaolinite-hydrated lime binder system
Highlights New process for the production of β-belite cement. Properties of β-belite-metakaolinite hydrated lime mortars over one year of curing. Impact of content of β-belite cement on mineral composition and properties of mortars. Improvement in the shrinkage, mechanical properties and freeze and thaw resistance.
Abstract A novel β-belite cement was prepared, characterized (by chemical and phase composition, particle size distribution, bulk density, specific surface area) and incorporated into mortars based on a mixed binder β-belite-metakaolinite-hydrated lime with different contents of β-belite cement (0, 20, 40, 60, 80 and 100 wt.%). The metakaoline:hydrated lime weight ratio of 1:1 and binder:sand weight ratio of 1:3 were observed in all mortars. The effect of the β-belite cement fraction on the properties of fresh mortars (water:binder ratio needed to achieve the required mortars consistency and initial setting time), on the phase composition (X-Ray diffraction phase analysis and thermogravimetric analyses) and on the structural properties of mortars (compressive strength, flexural strength, bulk density, water absorption, water absorption coefficient, shrinkage) over 1 year of curing was investigated. Freeze and thaw resistance of the mortars after 1 year of curing was also evaluated. Partial replacement of metakaolinite-hydrated lime binder with β-belite cement affected all investigated mortar properties. Significant improvements in mechanical properties and resistance to freezing and thawing cycles were the main advantages.
Properties of mortars based on β-belite-metakaolinite-hydrated lime binder system
Koutník, Petr (author) / Soukup, Aleš (author) / Bezucha, Petr (author) / Kohout, Jan (author)
2020-04-07
Article (Journal)
Electronic Resource
English
β-belite , Metakaolin , Lime , Mortar , Frost resistance
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