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The quality of natural armourstone used as building material of hydraulic structures such as breakwaters is an important issue since it has a significant influence on their stability, their design and their maintenance policy. Professionals consider integrity as ‘essential’ but no satisfactory test method is available yet. This paper presents an in-situ test method as a means to quantitatively and efficiently differentiate consignments affected by different types of defects and to estimate the modifications of the mass distribution curve during routine handling. It is proposed to use this test method and the associated analysis to predict the mass distribution to account for at design stage, especially in region deprived of good quality armourstone source. Results cannot be used prior to written authorisation of the authors. Mots cles:Enrochement, integrite, discontinuite, methode d’essai, ouvrage hydraulique, digue

Proposition d’une méthode d’essai destructive in-situ pour la caractérisation de l’intégrité des enrochements naturels utilisés dans les ouvrages hydrauliques