CONSTRUCTION MATERIALS RESEARCH PROJECTS
AT COVENTRY UNIVERSITY
COULOMB TEST Back to home page
Full Title: Measurement
of Chloride Transport in Concrete
Status: This work was carried out by two PhD students. The second student was funded by the EU Alban
programme.
In this project, a test which uses an
applied voltage to measure the ability of concrete to protect embedded
reinforcement from chlorides, was analyzed in detail.
By using numerical and analytical models, an understanding of the basic
processes which take place during the test has been developed, and this was
used to propose methods to make the test more effective.
The presentation below gives an
explanation of how the modelling works.
Basic physics is used to show that the voltage fall across the sample
does not remain linear during the test.
The computer programme calculates this distribution. It is proposed that measuring the mid-point
voltage during the test could greatly improve it as a predictor of durability.
The following files relate to our latest publication in Materials Chemistry and Physics and have been uploaded Summer 2009
This file is the procedure for running the Neural Network in MatLab: Coulomb tests\tutorial ANNcoventry v2.0.doc
These 2 files are Excel spreadsheets for running the electrochemical model as visual basic macros
This file is for voltage control: Coulomb tests\Voltage control CMS.xls
This file is for current control: Coulomb tests\Current control CMS.xls