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Document Type:Latin Dissertation
Language of Document:English
Record Number:53998
Doc. No:TL23952
Call number:‭MR21052‬
Main Entry:Amir Mohammad Ramezanianpour
Title & Author:Evaluation of two automated methods for determination of the air void system parameters of hardened concreteAmir Mohammad Ramezanianpour
College:University of Toronto (Canada)
Date:2006
Degree:M.A.Sc.
student score:2006
Page No:96
Abstract:Determination of air void parameters of hardened concrete is usually performed according to ASTM C 457 standard. This standard process is tedious and the results depend on the skill of the operator. Several researchers have proposed alternative automated methods for performing the test. Two of these new methods are Rapid Air 457 and the scanner method. Rapid Air 457 collects images from the surface of concrete samples using a digital microscope whereas in the scanner method, the surface is scanned by a flat-bed scanner. Then, the captured images are analyzed by different computer software. In this thesis, 22 concrete samples were examined by these two methods and the air void parameters were compared to those obtained from the standard method. Moreover, different parameters influencing the results of the test were examined and the precision of the results were compared to the recommendations of ASTM standard.
Subject:Applied sciences; Civil engineering; 0543:Civil engineering
Added Entry:University of Toronto (Canada)