Affordable Access

Publisher Website

Application of micromechanics to the characterization of mortar by ultrasound

Authors
Journal
Ultrasonics
0041-624X
Publisher
Elsevier
Publication Date
Volume
40
Identifiers
DOI: 10.1016/s0041-624x(02)00140-3
Keywords
  • Material Characterization
  • Porosity
  • Micromechanics
  • Ultrasound Velocity
Disciplines
  • Musicology
  • Physics

Abstract

Abstract Mechanical properties of concrete and mortar structures can be estimated by ultrasonic non-destructive testing. When the ultrasonic velocity is known, there are standardized methods based on considering the concrete a homogeneous material. Cement composites, however, are heterogeneous and porous, and have a negative effect on the mechanical properties of structures. This work studies the impact of porosity on mechanical properties by considering concrete a multiphase material. A micromechanical model is applied in which the material is considered to consist of two phases: a solid matrix and pores. From this method, a set of expressions is obtained that relates the acoustic velocity and Young's modulus of mortar. Experimental work is based on non-destructive and destructive procedures over mortar samples whose porosity is varied. A comparison is drawn between micromechanical and standard methods, showing positive results for the method here proposed.

There are no comments yet on this publication. Be the first to share your thoughts.