Standard Test Method for Measuring Moisture Vapor Emission Rate of Concrete Subfloor Using Anhydrous Calcium Chloride

SCOPE
1.1 This test method covers the quantitative determination of the rate of moisture vapor emitted from below-grade, on-grade, and above-grade (suspended) concrete floors.

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09-Apr-1998
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ASTM F1869-98 - Standard Test Method for Measuring Moisture Vapor Emission Rate of Concrete Subfloor Using Anhydrous Calcium Chloride
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
Designation: F 1869 – 98
Standard Test Method for
Measuring Moisture Vapor Emission Rate of Concrete
Subfloor Using Anhydrous Calcium Chloride
This standard is issued under the fixed designation F 1869; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Significance and Use
1.1 This test method covers the quantitative determination 4.1 Use this test method to obtain a quantitative value
of the rate of moisture vapor emitted from below-grade, indicating the rate of moisture vapor emission from a concrete
on-grade, and above-grade (suspended) concrete floors. floor and whether or not that floor is acceptable to receive
1.2 This quantity of moisture shall be expressed as the rate resilient floor covering. The moisture vapor emission rate only
of moisture vapor emission, measured in pounds of moisture reflects the condition of the concrete floor at the time of the
over a 1000 ft area during a 24-h period. test. All concrete subfloors emit some amount of moisture in
1.3 The values stated in inch-pound units are to be regarded vapor form. Concrete moisture emission is a natural process
as the standard. The values given in parentheses are for driven by environmental conditions. All floor coverings are
information only. susceptibletofailurefromexcessivemoisturevaporemissions.
1.4 This standard does not purport to address all of the The moisture vapor emitted from a concrete slab is measured
safety concerns, if any, associated with its use. It is the in pounds. This measurement is the equivalent weight of water
responsibility of the user of this standard to establish appro- evaporating from 1000 ft of concrete surface in a 24–h period.
priate safety and health practices, and determine the applica- The calcium chloride moisture test has been the industry
bility of regulatory limitations prior to use. standard for making this determination and is a practical,
well-established and accepted test of dynamic moisture. It will
2. Referenced Documents
produce quantified results directly applicable to flooring manu-
2.1 ASTM Standards: facturer’s specifications. The results obtained reflect only the
F 141 Terminology Relating to Resilient Floor Coverings
condition of the concrete floor at that time.
2.2 Resilient Floor Covering Institute Standard:
5. Apparatus
Recommended Work Practices
2.3 Military Standard: 5.1 Test Unit Contents:
Mil Spec B-131H Type 1, Class III 5.1.1 Cylindrical Plastic Dish Containing Anhydrous Cal-
cium Chloride, tape sealed against moisture, or heat sealed in
3. Terminology
aheatsealablebagmeetingMilSpecB-131HType1,ClassIII,
3.1 Definitions: SeeTerminology F 141F 141 for definitions or both, to protect from moisture intrusion.
of the terms, above-grade (suspended), below-grade, concrete,
5.1.1.1 The weight of the container, the anhydrous calcium
on-grade, and resilient flooring. chloride and the tape seal shall be 1.06 oz (30 g) 6 10 %.
3.2 Definitions of Terms Specific to This Standard:
5.1.2 Pressure Sensitive Label, to be used to identify the
3.2.1 moisture vapor emission rate (MVER)—amount of container of calcium chloride and to record the date, time, and
water vapor in pounds emitted from a 1000 ft area of concrete
container weight when the test is started and completed.
flooring during a 24-h period (multiply by 56.51 to convert to 5.1.3 Transparent Cover, with 0.5 in. (12 mm) flanges
2 2 2
µg/s m ).
around the perimeter, approximately 0.5 ft (460 6 46 cm ), as
measured between the inside of the flanges, is required to seal
the test area of the floor. The plastic cover shall have a depth
This test method is under the jurisdiction ofASTM Committee F-6 on Resilient
greater than the height of the container of anhydrous calcium
Floor Coverings and is the direct responsibility of Subcommittee F06.40 on
Practices. chloride. The height of the container shall be 1 ⁄2 in. 6 0.125
Current edition approved April 10, 1998. Published August 1998.
(38 6 3.2 mm).
Annual Book of ASTM Standards, Vol. 15.04.
5.1.4 Strip of Sealant, to secure the plastic cover to the floor
Available from Resilient Floor Covering Institute, 966 Hungerford Drive, Suite
in an airtight fashion.
12-B, Rockville, MD 20850.
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700
Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
F1869–98
5.1.5 Brightly Colored Warning Label, to be placed on the 7. Procedure
plastic cover as a protective warning while the test is being
7.1 Expose a minimum area of 20 by 20 in. (50.8 by 50.8
conducted.
cm) to conditions specified in 6.1 and 6.2 for a minimum
5.1.6 Mailing Bag, for the return of the return of the sample
period of 24 h prior to starting each test. Weigh the container
to the party responsible for calculating the test results.
of anhydrous calcium chloride, including the tape used to seal
5.2 Gram Scale, capable of measuring 0.1 g. This scale will
the container, the container lid, and the label which should be
be used to weigh the calcium chloride container at the start and
affixed to the lid. Record the weight to the nearest 0.1 g on the
end of the test. On-site measurement is preferred to mailing the
container label along with the starting time to the nearest 6 ⁄4
container back to the supplier for results.
h.
5.3 Thermometer, capable of measuring room temperature.
7.1.1 If not provided by the CaCl test kit manufacturer,
5.4 Hygrometer, capable of measuring the relative humidity
obtain the actual area of the test site. Measure the length and
of the test site.
widthoftheplasticcoverbetweentheinsideoftheflanges,and
multiply to obtain the area. Measure the bottom of the dish
6. Conditioning
containing the CaCl to obtain the radius. To calculate the area
of the dish, use the following equation:
6.1 The test site should be at the same temperature and
humidity expected during normal use. If this is not possible,
A5pr (1)
then the test conditions should be 75 6 10°F (23.9 6 5.5°C)
where:
and 50 6 10 % relative humidity. Maintain these conditions 48
p = 3.14
h prior to, and during testing.
Deduct the area of the dish from the area of the plastic
6.2 Prior to placement of the anhydrous calcium chloride
covering. Record this as the actual test area. This will be used
tests, the actual test area shall be clean and free of all foreign
to make the final calculation at the end of the test.
substances. All residual adhesives, curing compo
...

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