Supermarket Concrete Moisture Testing
A Sydney supermarket in construction required moisture testing on their concrete slab floor. An NLR concrete moisture testing specialist was sent to provide a full report with accurate and thorough readings of the building's slab. If a concrete slab is not reached an acceptable dry standard, it can be conducive to mould growth and possible damage to floor coverings. NLR was there to confirm whether the slab was at correct moisture levels.
22
Test Points
48
hour period of testing
#Process of Concrete Slab Moisture Testing
NLR carries out relative humidity in-situ probe tests in accordance with ASTM F2710 and recommended by AS 1884-2012. In order to sufficiently read moisture levels deep within the concrete slab, small holes are drilled into the concrete 20% through its thickness.
In this case, 22 holes were drilled into the concrete spanning across the entirety of the supermarket complex, to provide a complete picture of the moisture levels throughout the complex. Once drilled, the technician inserted caps on the holes. over a 24 hour period, these drilled holes would acclimate, allowing for accurate reading of the relative humidity (RH) indicative of the moisture content in the concrete slab. Once 24 hours passed, the technician inserted a probe into the hole and recorded the RH of each of the 22 points.
#Site pictures
Mapping of concrete slab moisture points
Relative humidity reading in concrete slab point 8
#Result
The client received a full 22 point concrete moisture test report, informing the client of the moisture levels that were currently present in the slab. The report was sent the same day the testing was completed-- a 2-day process from the first arrival to a final report sent through.
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