Issue34

A. Satoh et alii, Frattura ed Integrità Strutturale, 34 (2015) 397-405; DOI: 10.3221/IGF-ESIS.34.44 405 [3] Yamada, K., Ishiyama, S., Satoh, A., A discussion on enhancement of mechanical properties of concrete- polymer cement mortar interface, Transactions of Architectural Institute of Japan, Tohoku Branch., 76 (2013) 159–162. [4] Satoh, A., Yamada, K., Ishiyama, S., Simplified two-dimensional mesoscopic model for evaluating mechanical properties and crack paths near interfaces in concrete, Engineering Fracture Mechanics., 108 (2013) 222–237. [5] Satoh, A., Yamada, K., Ishiyama, S., A discussion on major factors affecting crack path of concrete-to-concrete interfacial surfaces, Engineering Fracture Mechanics., 77 (2010) 2168–2181. [6] Satoh, A., Yamada, K., Shinohara, Y., Simulation of Adhesion Performance of Mortar-Mortar Interface with Varied Fractographic Features, Key Engineering Materials, Advances in Fracture and Damage Mechanics XII., 577–578 (2014) 357–360. [7] Zhang, D. W., Furuichi, H., Ueda, T., Optimum treatment of PCM-concrete interfaces, Proceedings of FraMCoS-7., (2012) 1227–1232. [8] Satoh, A., A new concept for heterogeneity-based fractography of concrete, Doctoral dissertation, Akita prefectural university, Japan (2012). N OMENCLATURE BSI: Back scattered electron image CH: Calcium hydroxide E: Young’s modulus of elasticity (GPa or MPa) EPMA: Electron probe micro analyzer FEM: Finite element method for analysis FRR: Fraction of the area fractured in repair divided by the total area ( - ) Fb: Flexural strength (MPa) Ft: Tensile strength (MPa) GF: Fracture energy (N/mm or N/m) Hmax: Maximum height in the surface from the average height (mm) LB: Layer of bleeding in interface LWE: Layer of wall effect RL: Total path length along the crack path (mm) RRL: Ratio of the length measured along the crack path divided by the projected length (- ) Rr1: Fraction of the area where the local radius of the curvature is under 1 mm divided by the total area ( - ) SEM: Scanning electron microscope Sd: Standard deviation of the height on the fractured surface (mm) TSD: Tension softening diagram W/C: Water to cement ratio (-) WOF: Work of fracture (N/mm or N/m)