On the left you see a typical test made using Trase TDR of a concrete
pour. The box form contained some 6-8 cu. Ft. of Concrete. On the upper
left is a typical "coated" (green center rod) waveguide that can be buried to
any depth within a concrete pour. In the test case we used 3 of these units in
making TDR measurements as well as taking the temperature of the mix as it
cured. In the following graphs you will see a typical waveform generated by
a Trase TDR as it reads the volumetric moisture content of the mix as it
cures.
As the mix is monitored over a 2 week
period from initial cure to long term drying after the cure, one
can precisely determine volumetric water that is used in the curing process,
the exothermic reactions, depletion of free water and finally the water as it is
withdrawn slowly by nature drying processes.
One can see the direct benefits in
monitoring a concrete pour from start to long term finish, the complete
interactions of the curing process. There are very few other technologies
that provide this vital data. Certainly a slump test can be used but it's like
measuring the thickness of paper with a ruler rather than a micrometer. If
your interests are in assuring a precise and repeatable batch of mix, or in
seeing the full curing of a pour cycle Trase TDR can fit the bill.
Let us know what and how you'd like to use TDR in monitoring your
specific needs in cement and concrete work and we'll find a solution to meet
those requirements.
For inquiries or questions about TDR and Concrete, you may contact Mr. Alle van Calker alle@soilmoisture.com
By phone: 805-964-3525 ext 248.
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