Calcium Chloride Concrete Moisture Test Results

Calcium chloride tests the surface ultimately the results expressed as mver indicate only a qualitative at best indication of the presence of free moisture at the surface of the concrete.

Calcium chloride concrete moisture test results.

The formula for calculation of test results is as follows. If you change the surface conditions the calcium chloride test results can vary greatly without a corresponding change in the internal moisture conditions. The calcium chloride test method is used to determine the moisture vapor emission rate mver from a concrete slab. In situ probes astm f2170 and calcium chloride testing astm f1869.

With this test a small amount of calcium chloride is weighed and then sealed on top of a properly prepared slab for 72 hours. Concrete slab over a 24 hour period. Moisture from the concrete floor is absorbed by the calcium chloride when it exits the surface. The building must be acclimatized to the anticipated service conditions for 48 hours prior to testing.

During that time the calcium chloride will absorb the moisture from the slab. The ph test kitmeasures the alkalinity of the concrete. These items are necessary for the calculator to function and will be used for the final result printout. This online calculator has been developed exclusively for use with the amt calcium chloride cc moisture test kit.

The calcium chloride moisture test kitmeasures the quantity of moisture passing through the slab on and below grade concrete floors lbs. After 72 hours the test dish can be collected and weighed the increase in weight is how you determine how much moisture in in the concrete. Area during a 24 hour period. Please enter the location date time and weight in grams.

Concrete slab moisture can cause problems with adhesion of floor covering materials such as tile sheet flooring or carpet and bond related material failure of non breathable floor coverings. Mver 24 000 x gain 453 612 x area x time. Time exposure time in hours. The amount of moisture is expressed as the rate of mver measured in pounds of moisture of a 1000 sq.

Astm international has provided several standards related to testing moisture conditions with two different test methods before installing flooring over a concrete slab. Of moisture over a 1 000 sq. After 72 hours the calcium chloride is weighed again and the added weight is calculated to determine the moisture vapor driven through the subfloor. Area during a 24 hour period.