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Description:: In this paper, the correlation of reflection loss measured by an ultrasonic shear wave reflection method and the microstructure in cement-based material is investigated. Three cement pastes (Portland cement type I) with different water-cement ratios (0.35, 0.50 and 0.60) cured at 25 °C were examined. The ultrasonic shear wave reflection...
Keyword:: Nondestructive testing
Creator:: Zhihui Sun, Guang Ye, Klaas van Breugel, Surendra P. Shah, and Thomas Voigt
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/19/2017
Date Modified:: 08/14/2017
Date Created:: 2003
Resource Type:: Research Paper

Description:: The gradual evolution of the material properties of a cement-based material, i.e. the stiffness of cement paste, is the result of the continuous change of the microstructure with the progress of the hydration process. Based on an existing micromechanical model for the simulation of the shear and elastic modulus of...
Keyword:: Structural health monitoring and Cement rheology
Creator:: Zhihui Sun, Guang Ye, Klaas van Breugel, Surendra P. Shah, and Thomas Voigt
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/19/2017
Date Modified:: 08/14/2017
Date Created:: 2004
Resource Type:: Research Paper

Description:: The setting and hardening process of concrete can be considered as the most critical time period during the life of a concrete structure. To assure high quality and avoid problems in performance throughout the life of the material, it is essential to have reliable information about the early age properties...
Keyword:: Structural health monitoring
Creator:: Zhihui Sun, Surendra P. Shah, and Thomas Voigt
Owner:: Nurganym Agzamova
Publisher:: Northwestern University Libraries
Language:: English
Date Uploaded:: 07/19/2017
Date Modified:: 08/14/2017
Date Created:: 2004
Resource Type:: Other

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