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A platform for research: civil engineering, architecture and urbanism
Nitrato de calcio como aditivo en hormigón armado de acero que tiene una resistencia elevada contra la carbonatación
Composición de hormigón que se puede verter y curar, que comprende por m3 de hormigón curado - entre 300 y 500 kg de cemento; - entre 150 y 300 kg de agua; - entre 1500 y 1800 kg de agregado; y - entre el 1 % en peso y el 4 % en peso del contenido de cemento de la composición de hormigón, dependiendo del tipo de cemento, de nitrato de calcio.
The invention relates to the use of calcium nitrate as an admixture for a steel reinforced concrete composition to increase the resistance towards carbonation of the steel reinforced hardened concrete, wherein the concrete composition comprises cement and the calcium nitrate at a dosage of 1 - 4 weight% of the cement content of the concrete composition. Defined is a pourable and curable concrete composition, comprising per m 3 cured concrete: 300 - 500 kg cement, 150 - 300 kg water, 1.500 - 1.800 kg aggregate and 1 - 4 weight% of the cement content of the concrete composition, depending on the type of cement, of calcium nitrate. Further defined is a method for producing a steel reinforced concrete solid having an elevated resistance towards carbonation, comprising the steps of: - preparing this concrete composition upon mixing the defined quantities of the water, the cement, the aggregate and the calcium nitrate; - casting the concrete composition into a form provided with a steel reinforcement; and - having the concrete composition hardened into the steel reinforced concrete solid with the elevated resistance towards carbonation. This results in a reduced permeability for the set cementitious composition and concrete for carbon dioxide (CO 2 ) and thus an elevated resistance towards carbonation.
Nitrato de calcio como aditivo en hormigón armado de acero que tiene una resistencia elevada contra la carbonatación
Composición de hormigón que se puede verter y curar, que comprende por m3 de hormigón curado - entre 300 y 500 kg de cemento; - entre 150 y 300 kg de agua; - entre 1500 y 1800 kg de agregado; y - entre el 1 % en peso y el 4 % en peso del contenido de cemento de la composición de hormigón, dependiendo del tipo de cemento, de nitrato de calcio.
The invention relates to the use of calcium nitrate as an admixture for a steel reinforced concrete composition to increase the resistance towards carbonation of the steel reinforced hardened concrete, wherein the concrete composition comprises cement and the calcium nitrate at a dosage of 1 - 4 weight% of the cement content of the concrete composition. Defined is a pourable and curable concrete composition, comprising per m 3 cured concrete: 300 - 500 kg cement, 150 - 300 kg water, 1.500 - 1.800 kg aggregate and 1 - 4 weight% of the cement content of the concrete composition, depending on the type of cement, of calcium nitrate. Further defined is a method for producing a steel reinforced concrete solid having an elevated resistance towards carbonation, comprising the steps of: - preparing this concrete composition upon mixing the defined quantities of the water, the cement, the aggregate and the calcium nitrate; - casting the concrete composition into a form provided with a steel reinforcement; and - having the concrete composition hardened into the steel reinforced concrete solid with the elevated resistance towards carbonation. This results in a reduced permeability for the set cementitious composition and concrete for carbon dioxide (CO 2 ) and thus an elevated resistance towards carbonation.
Nitrato de calcio como aditivo en hormigón armado de acero que tiene una resistencia elevada contra la carbonatación
FRANKE WOLFRAM (author) / CILLUFFO GIUSEPPE (author) / TORABZADEGAN MEHRDAD (author)
2020-06-11
Patent
Electronic Resource
Spanish
IPC:
C04B
Kalk
,
LIME
Resistencia al fuego de elementos estructurales prefabricados de hormigón armado
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