Here s how it works.
Calcium chloride concrete moisture test results.
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.
Astm international has provided several standards related to testing moisture conditions with two different test methods before installing flooring over a concrete slab.
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.
During that time the calcium chloride will absorb the moisture from the slab.
In situ probes astm f2170 and calcium chloride testing astm f1869.
This online calculator has been developed exclusively for use with the amt calcium chloride cc moisture test kit.
The calcium chloride test method is used to determine the moisture vapor emission rate mver from a concrete slab.
These items are necessary for the calculator to function and will be used for the final result printout.
The calcium chloride moisture test kitmeasures the quantity of moisture passing through the slab on and below grade concrete floors lbs.
Of moisture over a 1 000 sq.
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 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.
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.
Please enter the location date time and weight in grams.
Area during a 24 hour period.
The amount of moisture is expressed as the rate of mver measured in pounds of moisture of a 1000 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 formula for calculation of test results is as follows.
Time exposure time in hours.
The ph test kitmeasures the alkalinity of the concrete.
Mver 24 000 x gain 453 612 x area x time.
The building must be acclimatized to the anticipated service conditions for 48 hours prior to testing.
Concrete slab over a 24 hour period.
