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Experimental study of triaxial mechanical behaviour of a high performance concrete: effect of low temperature during maturation (20 to 80°C)

type de publication      communication internationale avec actes publiés
date de publication 2011
auteur(s) Liang Yue; Rougelot Thomas; Burlion Nicolas
  
conférence 45th US Rock Mechanics / Geomechanics Symposium 2011
     dates de 26-06-2011 à 29-06-2011
     lieu San Francisco, California, USA
     nom des actes 45th US Rock Mechanics / Geomechanics Symposium 2011
  
pages 464 – 469
ISBN / ISSN 978-1-61839-154-4
résumé Design of underground nuclear waste disposal requires a full characterization of concrete under various thermohydro- mechanical and chemical condition. This experimental work concerns the characterization of coupled thermo-hydromechanical effects, and the concretes are made with cement CEM I or CEM V/A (according to European norms), allowing to study the effect of concrete composition on behaviour. The objective is to know, after one year of maturation under water at 20°C, whether an additional maturation with different temperatures will influence the degree of hydration and mechanical properties. Firstly, the variation of mass is measured to indirectly analyse the variation of the degree of hydration with temperature. Then, for demonstrate the influence of temperature during maturation at long-term, triaxial compression tests are carried out with various confining pressures.
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