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ASTM F1869-04

Historical Revision

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

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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.

1.2 This quantity of moisture shall be expressed as the rate of moisture vapor emission, measured in pounds of moisture over a 1000 ft2 area during a 24-h period.

1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.


Use this test method to obtain a quantitative value indicating the rate of moisture vapor emission from a concrete floor and whether or not that floor is acceptable to receive resilient floor covering. The moisture vapor emission rate only reflects the condition of the concrete floor at the time of the test. All concrete subfloors emit some amount of moisture in vapor form. Concrete moisture emission is a natural process driven by environmental conditions. All floor coverings are susceptible to failure from excessive moisture vapor emissions. The moisture vapor emitted from a concrete slab is measured in pounds. This measurement is the equivalent weight of water evaporating from 1000 ft2 of concrete surface in a 24h period. The calcium chloride moisture test has been the industry standard for making this determination and is a practical, well-established and accepted test of dynamic moisture. It will produce quantified results directly applicable to flooring manufacturer’specifications. The results obtained reflect only the condition of the concrete floor at that time.

SDO ASTM: ASTM International
Document Number F1869
Publication Date June 1, 2004
Language en - English
Page Count 3
Revision Level 04
Supercedes
Committee F06.40
Publish Date Document Id Type View
Aug. 1, 2023 F1869-23 Revision
June 1, 2022 F1869-22 Revision
Dec. 1, 2016 F1869-16A Revision
March 1, 2016 F1869-16 Revision
July 1, 2011 F1869-11 Revision
July 1, 2010 F1869-10 Revision
Dec. 1, 2009 F1869-09 Revision
June 1, 2004 F1869-04 Revision
Nov. 1, 2003 F1869-03 Revision
April 10, 1998 F1869-98 Revision