Calcium Chloride Concrete Moisture Test Results

Area during a 24 hour period.

Calcium chloride concrete moisture test results.

Area during a 24 hour period. 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. The ph test kitmeasures the alkalinity of the concrete. During that time the calcium chloride will absorb the moisture from the slab.

Moisture from the concrete floor is absorbed by the calcium chloride when it exits the surface. Of moisture over a 1 000 sq. Please enter the location date time and weight in grams. These items are necessary for the calculator to function and will be used for the final result printout.

The amount of moisture is expressed as the rate of mver measured in pounds of moisture of a 1000 sq. Mver moisture vapor emission rate gain weight gain of calcium chloride crystals in grams area area of dome contact to slab less area of dish contact in square feet. After 72 hours the calcium chloride is weighed again and the added weight is calculated to determine the moisture vapor driven through the subfloor. Astm international has provided several standards related to testing moisture conditions with two different test methods before installing flooring over a concrete slab.

If you change the surface conditions the calcium chloride test results can vary greatly without a corresponding change in the internal moisture conditions. This online calculator has been developed exclusively for use with the amt calcium chloride cc moisture test kit. 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 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.

The calcium chloride moisture test kitmeasures the quantity of moisture passing through the slab on and below grade concrete floors lbs. Calcium chloride moisture testing per astm 1869 04 the calcium chloride moisture test is designed to quantify the volume of water vapor emitting from a 1 000 sq. 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. The building must be acclimatized to the anticipated service conditions for 48 hours prior to testing.

Time exposure time in hours. In situ probes astm f2170 and calcium chloride testing astm f1869. Concrete slab over a 24 hour period. The formula for calculation of test results is as follows.