Microstructure and Crack Initiation, Propagation and Localization in Concrete

Abstract

The goal of this research was to study the physical processes such as crack formation and localization affecting the performance of concrete. To clearly establish relation between macroscopic deformations and microscopic damage mechanisms, model concrete specimens with prefabricated microstructures were stressed and examined using Acoustic Emission and Lase Holography. The emphasis of the study was on a detailed observation of microstructure and crack growth under well defined observation of microstructure and crack growth under well defined boundary conditions. Fracture mechanics concepts were applied to understand various experimentally observed phenomena for different modes.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 1988
Accession Number
ADA203729

Entities

People

  • Surendra P. Shah

Organizations

  • Northwestern University

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Emissions
  • Ceramic Materials
  • Civil Engineering
  • Concrete
  • Crack Propagation
  • Crack Tips
  • Cracks
  • Failure Mode And Effect Analysis
  • Fracture (Mechanics)
  • Materials
  • Measurement
  • Mechanics
  • Numerical Analysis
  • Photographic Materials
  • Photographs
  • Photography
  • Stress Intensity Factors

Readers

  • Materials Science (Mechanical Engineering).
  • Pavement Materials Engineering.
  • Theoretical Analysis.