Improvement of adhesion performance of mortar-repair interface with inducing crack path into repair
Journal Title: Frattura ed Integrità Strutturale - Year 2015, Vol 9, Issue 34
Abstract
The most important performance for repair materials is adhesion to the substrate. The authors experimentally find out that high modulus fine aggregates in repair material enhance strength of it as well as the strength of the interface repaired with it, compared to the ordinary repair without fine aggregates. This paper elaborates the mechanisms for that with fractographic observation and FEM analysis based on the results of experiment. Also the authors discuss the ways for enhancing the strength and ductility of the repaired mortar.
Authors and Affiliations
A. Satoh, M. Satoh, K. Yamada
A probabilistic interpretation of the Miner number for fatigue life prediction
The Miner number M, used as a tool for lifetime prediction of mechanical and structural components in most of the standards related to fatigue design, is generally accepted as representing a damage stage resultin...
La modellazione microstrutturale di materiali a struttura eterogenea: princìpi ed applicazioni
Molti problemi della Meccanica e Fisica dei Solidi e della Scienza dei Materiali, non sono facilmente risolvibili con gli approcci tradizionali. Oltre allo studio delle proprietà effettive dei solidi eterogenei, vi è la...
Prediction of the critical stress to crack initiation associated to the investigation of fatigue small crack
Fatigue design is of vital importance to avoid fatigue small crack growth in engineering structures. This study shows that the critical fatigue design stress can be defined below the usual endurance limit, conside...
Misure di tenacità a frattura su acciai utilizzando velocità di deformazione elevate
La conoscenza delle proprietà meccaniche di tipo dinamico per i materiali metallici è utile ogniqualvolta la sensibilità alla velocità di deformazione è di rilevanza per un acciaio, e qualora le condizioni reali di...
Effective stress assessment at rectangular rounded lateral notches
Rectangular lateral notches are not common engineering components, thus little research attention has been directed towards the investigation of their stress field properties. Indeed, no in-depth investigations h...