%0 Journal Article %T Mechanical tensile behaviour of cement paste/aggregate bond exposed to leaching %+ Technical University of Civil Engineering of Bucharest = Université Technique de Génie Civil de Bucarest (UTCB) %+ Laboratoire d'Innovation Numérique pour les Entreprises et les Apprentissages au service de la Compétitivité des Territoires (LINEACT) %+ Structures Innovantes, Géomatériaux, ECOconstruction (SIGECO) %+ Laboratoire de micromécanique et intégrité des structures (MIST) %+ ThermoMécanique des Matériaux (ThM2) %+ Laboratoire Charles Coulomb (L2C) %A Gîrboveanu, Andrei %A Jebli, Mouad %A Jamin, Frédéric %A Huon, Vincent %A Bonnet, Laurent %A Georgescu, Dan %A El Youssoufi, Moulay Saïd %< avec comité de lecture %@ 0950-0618 %J Construction and Building Materials %I Elsevier %V 369 %P 130592 %8 2023-03 %D 2023 %R 10.1016/j.conbuildmat.2023.130592 %K Cement Paste %K Concrete %K ITZ %K Leaching %K Microstructure %K Tensile Tests %Z Chemical Sciences/Material chemistry %Z Chemical Sciences/Material chemistryJournal articles %X An experimental program is oriented to the mechanical behaviour of the Interfacial Transition Zone (ITZ) exposed to leaching, for a single mix. Leaching kinetics of the degraded depth, measured through grey level on cross sections, reveals a maximum gap of 10 % between ITZ and bulk cement paste. ITZ, with a main thickness of 15 µm suffers a significant decalcification, which is reflected on the mechanical properties of the bond. Grey level, Calcium/Silicon (Ca/Si) molar ratio and Young’s modulus in the degraded zone present similar evolution. Effect of ITZ causing cracking and then debonding is noticed, through chemical analysis, image observation and mechanical tests. %G English %L hal-04071077 %U https://hal.science/hal-04071077 %~ IRSN %~ CNRS %~ LMGC %~ L2C %~ MIST %~ UNIV-MONTPELLIER %~ UM-2015-2021 %~ UM-EPE %~ HESAM %~ HESAM-CESI %~ LINEACT-CESI %~ CESI