Experimental investigation of the effect of temperature on the first desorption isotherm of concrete

In the framework of the radioactive waste management in France, interim storage concrete structures should be submitted to temperatures up to 80 °C and subsequent desiccation. The impact of temperature on the sorption properties of concretes has been poorly studied and results are scarce. An experim...

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Bibliographic Details
Published in:Cement and concrete research 2009-11, Vol.39 (11), p.1052-1059
Main Author: Poyet, Stéphane
Format: Article
Language:English
Subjects:
ADSORPTION
Applied sciences
BUILDING MATERIALS
Buildings. Public works
Civil Engineering
Concrete
CONCRETES
Concretes. Mortars. Grouts
DESORPTION
Durability
Engineering Sciences
Exact sciences and technology
General (composition, classification, performance, standards, patents, etc.)
Génie civil nucléaire
ISOTHERMS
MANAGEMENT
MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
MATERIALS
MATERIALS SCIENCE
MICROSTRUCTURE
RADIOACTIVE MATERIALS
Radioactive waste
RADIOACTIVE WASTE MANAGEMENT
RADIOACTIVE WASTE STORAGE
RADIOACTIVE WASTES
SORPTION
STORAGE
Surface area
Temperature
WASTE MANAGEMENT
WASTE STORAGE
WASTES
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Description
Summary:In the framework of the radioactive waste management in France, interim storage concrete structures should be submitted to temperatures up to 80 °C and subsequent desiccation. The impact of temperature on the sorption properties of concretes has been poorly studied and results are scarce. An experimental campaign was thus carried out to characterize the first desorption isotherms of a modern concrete at 30 °C and 80 °C. The results show a significant influence of the temperature increase that will have to be accounted for the durability assessment of the long-term interim storage concrete structures. Investigating the causes of these modifications, it appeared that desorption induced by temperature might be the principal mechanism rather than microstructure alteration and water properties evolution.
ISSN:0008-8846
1873-3948
DOI:10.1016/j.cemconres.2009.06.019