Early Hydration Process of Portland Cement Paste by Electrical Measurement
Publication: Journal of Materials in Civil Engineering
Volume 18, Issue 1
Abstract
An electrical measurement technique was used to measure the electrical resistivity of cement paste having varying water/cement (w/c) ratios, and consequently the paste properties and characteristics were analyzed. The different hydration periods were identified from the electrical resistivity curve and the differential electrical resistivity curve. The setting time for the samples is reached before the first peak of the differential electrical resistivity curve, and this can provide a new method to determine setting time by using electrical resistivity measurements. The relation between w/c ratio and bulk resistivity at a fixed curing time follows a power law, so electrical resistivity can be used for determination of the w/c ratio in fresh and hardened cement pastes after calibration.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 18 • Issue 1 • February 2006
Pages: 99 - 105
Copyright
© 2006 ASCE.
History
Received: Sep 9, 2004
Accepted: Feb 23, 2005
Published online: Feb 1, 2006
Published in print: Feb 2006
Notes
Note. Associate Editor: Carl Liu
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