Calcium Chloride Concrete Moisture Test Results

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.

Calcium chloride concrete moisture test results. Astm international has provided several standards related to testing moisture conditions with two different test methods before installing flooring over a concrete slab. The amount of moisture is expressed as the rate of mver measured in pounds of moisture of a 1000 sq. The calcium chloride moisture test kitmeasures the quantity of moisture passing through the slab on and below grade concrete floors lbs. The calcium chloride test method is used to determine the moisture vapor emission rate mver from a concrete slab.

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. 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. The ph test kitmeasures the alkalinity of the concrete.

Area during a 24 hour period. 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. This online calculator has been developed exclusively for use with the amt calcium chloride cc moisture test kit. Please enter the location date time and weight in grams.

In situ probes astm f2170 and calcium chloride testing astm f1869. 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. Mver 24 000 x gain 453 612 x area x time. These items are necessary for the calculator to function and will be used for the final result printout.

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. Here s how it works. Time exposure time in hours.

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. Concrete slab over a 24 hour period. Area during a 24 hour period.