1、Designation: F1869 09Standard Test Method forMeasuring Moisture Vapor Emission Rate of ConcreteSubfloor Using Anhydrous Calcium Chloride1This standard is issued under the fixed designation F1869; the number immediately following the designation indicates the year oforiginal adoption or, in the case
2、of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the quantitative determinationof the rate of moisture vapor emitted f
3、rom below-grade,on-grade, and above-grade (suspended) bare concrete floors.1.2 This quantity of moisture shall be expressed as the rateof moisture vapor emission, measured in pounds of moistureover a 1000 ft2area during a 24-h period.1.3 This test shall not be used to evaluate moisture emis-sions ov
4、er gypsum concrete.1.4 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of thi
5、s standard to establish appro-priate safety and health practices, and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C670 Practice for Preparing Precision and Bias Statementsfor Test Methods for Construction MaterialsF141 Terminology Re
6、lating to Resilient Floor Coverings2.2 Resilient Floor Covering Institute Standard:Recommended Work Practices32.3 Military Standard:Mil Spec B-131H Type 1, Class III42.4 ICRI Guide:Guideline No. 03732: Selecting and Specifying ConcretePreparation for Sealers, Coatings, and Polymer Overlays53. Termin
7、ology3.1 Definitions: See Terminology F141 for definitions of theterms, above-grade (suspended), below-grade, concrete, on-grade, and resilient flooring.3.2 Definitions of Terms Specific to This Standard:3.2.1 moisture vapor emission rate (MVER)amount ofwater vapor in pounds emitted from a 1000 ft2a
8、rea of concreteflooring during a 24-h period (multiply by 56.51 to convert tog/s m2).4. Significance and Use4.1 Use this test method to obtain a quantitative valueindicating the rate of moisture vapor emission from a concretefloor and whether or not that floor is acceptable to receiveresilient floor
9、 covering. The moisture vapor emission rate onlyreflects the condition of the concrete floor at the time of thetest. All concrete subfloors emit some amount of moisture invapor form. Concrete moisture emission is a natural processdriven by environmental conditions. All floor coverings aresusceptible
10、 to failure from excessive moisture vapor emissions.The moisture vapor emitted from a concrete slab is measuredin pounds. This measurement is the equivalent weight of waterevaporating from 1000 ft2of concrete surface in a 24h period.The calcium chloride moisture test has been the industrystandard fo
11、r making this determination and is a practical,well-established and accepted test of dynamic moisture. It willproduce quantified results directly applicable to flooring manu-facturers specifications. The results obtained reflect only thecondition of the concrete floor at that time.5. Apparatus5.1 Te
12、st Unit Contents:1This test method is under the jurisdiction ofASTM Committee F06 on ResilientFloor Coverings and is the direct responsibility of Subcommittee F06.40 onPractices.Current edition approved Dec. 1, 2009. Published January 2010. Originallyapproved in 1998. Last previous edition approved
13、in 2004 as F186904. DOI:10.1520/F1869-09.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from Resi
14、lient Floor Covering Institute, 966 Hungerford Drive, Suite12-B, Rockville, MD 20850.4Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.5Available from International Concrete Repair Institute, International ConcreteRepai
15、r Institute 3 166 S. River Road, Suite 132, Des Plaines, IL 60018;,www.icri.org1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5.1.1 Cylindrical Plastic Dish Containing Anhydrous Cal-cium Chloride, heat sealed in a heat sealable bag
16、meeting MilSpec B-131H Type 1, Class III, to protect from moistureintrusion.5.1.1.1 Anhydrous calcium chloride shall be in the form ofprilled beads and shall have a minimum purity of 94 %. Netweight of the anydrous calcium chloride shall be 16 6 1g.5.1.1.2 Dish shall be made of a material that does
17、not absorbmoisture. Dimensions of the dish shall be 69 6 1 mm outsidediameter, 16 6 1 mm height, wall thickness less than 1 mm.Dish shall be supplied with a tight-fitting cover. The cover shallbe secured to the dish with pressure-sensitive-adhesive backedvinyl tape.5.1.2 Pressure Sensitive Label, to
18、 be used to identify thecontainer of calcium chloride and to record the date, time, andcontainer weight when the test is started and completed.5.1.3 Transparent Cover, with 0.5 in. (12 mm) flangesaround the perimeter, approximately 0.5 ft2(460 6 46 cm2), asmeasured between the inside of the flanges,
19、 is required to sealthe test area of the floor. The plastic cover shall have a depthgreater than the height of the container of anhydrous calciumchloride. The height of the container shall be 112 in. 6 0.125(38 6 3.2 mm).5.1.4 Strip of Sealant, to secure the plastic cover to the floorin an airtight
20、fashion.5.1.5 Brightly Colored Warning Label, to be placed on theplastic cover as a protective warning while the test is beingconducted.5.1.6 Mailing Bag, for the return of the sample to the partyresponsible for calculating the test results.5.2 Gram Scale, capable of measuring 0.1 g. This scale will
21、be used to weigh the calcium chloride container at the start andend of the test. On-site measurement is preferred to mailing thecontainer back to the supplier for results.5.3 Thermometer, capable of measuring room temperature.5.4 Hygrometer, capable of measuring the relative humidityof the test site
22、.6. Conditioning6.1 The test site should be at the same temperature andhumidity expected during normal use. If this is not possible,then the test conditions should be 75 6 10F (23.9 6 5.5C)and 50 6 10 % relative humidity. Maintain these conditions 48h prior to, and during testing.6.2 Prior to placem
23、ent of the anhydrous calcium chloridetests, the actual test area shall be clean and free of all foreignsubstances. All residual adhesives, curing compounds, sealers,paints, floor coverings, etc. shall be removed. Removal shall beaccomplished using approved OSHA work practices. Forremoval of existing
24、 resilient floorings or residual adhesive,strictly observe the Warning that follows and Notes 1 and 2.(WarningDo not sand, dry sweep, dry scrape, drill, saw,beadblast, or mechanically chip or pulverize existing resilientflooring, backing, lining felt, or asphaltic cut-back adhesives.These products m
25、ay contain either asbestos fibers or crystallinesilica. Avoid creating dust. Inhalation of such dust is a cancerand respiratory tract hazard. Smoking by individuals exposedto asbestos fibers greatly increases the risk of serious bodilyharm. Unless positively certain that the product containsnon-asbe
26、stos material, presume it contains asbestos. Regula-tions may require that the material be tested to determineasbestos content. RFCIs recommended work practices are adefined set of instructions addressed to the task of removing allresilient floor covering structures whether or not they containasbest
27、os. When RFCIs recommended work practices arefollowed, resilient floor covering structures that contain (or arepresumed to contain) asbestos can be removed in a manner thatwill comply with the current occupational exposure to asbestosstandards permissible exposure limits (PEL) issued by theOccupatio
28、nal Safety and Health Administrations (OSHA).NOTE 1Various federal, state, and local government agencies haveregulations covering the removal of asbestos-containing material. Ifconsidering the removal of resilient floor covering or asphaltic cut-backadhesive that contains or is presumed to contain a
29、sbestos, review andcomply with the applicable regulations.NOTE 2Certain paints may contain lead. Exposure to excessiveamounts of lead dust presents a health hazard. Refer to applicable federal,state, and local laws and “Lead-based Paint: Interim Guidelines forHazard Identification and Abatement in P
30、ublic and Indian Housing”6regarding: (1) appropriate methods for identifying lead-based paint andremoving of such paint, and (2) any licensing, certification, and trainingrequirements for persons performing lead abatement work. (Use onlyqualified of certified lead abatement contractors to remove lea
31、d-basedpaint.)7. Procedure7.1 Expose a minimum area of 20 by 20 in. (50.8 by 50.8cm) to conditions specified in 6.1 and 6.2 for a minimumperiod of 24 h prior to starting each test. Weigh the containerof anhydrous calcium chloride, including the tape used to sealthe container, the container lid, and
32、the label which should beaffixed to the lid. Record the weight to the nearest 0.1 g on thecontainer label along with the starting time to the nearest 614h.7.1.1 If not provided by the CaCl2test kit manufacturer,obtain the actual area of the test site. Measure the length andwidth of the plastic cover
33、 between the inside of the flanges, andmultiply to obtain the area. Measure the bottom of the dishcontaining the CaCl2to obtain the radius. To calculate the areaof the dish, use the following equation:A 5pr2(1)where:p = 3.14Deduct the area of the dish from the area of the plasticcovering. Record thi
34、s as the actual test area. This will be usedto make the final calculation at the end of the test.7.2 Apply the sealant to the flanges of the plastic cover in acontinuous bead. If the sealant has been preinstalled by the kitmanufacturer, expose by peeling off the protective covering.The purpose of th
35、e sealant is to form an airtight seal around theperimeter of the plastic cover.7.3 Carefully remove the sealing tape from the calciumchloride dish and attach it to the side of the plastic container.This tape will be used again to reseal the same container.6Available from U.S. Department of Housing a
36、nd Urban Development, Wash-ington, DC. Use September 1990 or subsequent editions.F1869 092Remove the container lid and invert it under the dish. Set thedish (and lid) onto the concrete surface. (WarningDo notspill any of the calcium chloride from the container. If spillageoccurs that test kit is to
37、be discarded requiring test to beperformed with a new test kit.Immediately place the plastic cover over the calcium chlo-ride dish. Firmly press down on the covers flanges compress-ing the sealant providing an airtight seal around the cover.7.4 After test has been in place for 60-72 h, remove thepla
38、stic cover. It may be best to cut the top open with a razorblade so the dish can be easily retrieved. Replace the lid on thecontainer and immediately reseal using the original sealingtape. Immediately reweigh the sealed container. Record thenew weight, the date, and time the test was stopped. Record
39、 ifperformed at the test site.NOTE 3If test container is to be return-mailed for results, immediatelyplace in mailing bag ensuring bag is properly sealed. Follow mailinginstructions provided with kit.7.5 The formula for computing moisture vapor emissionrate (MVER) is as follows:MVER 524 000DM453.612
40、AT552.91DMAT(2)where:MVER = moisture vapor emission rate, lb/1000 ft2/24 h,DM = change in mass (weight gain) of anhydrous CaCl2in g,A = contact area of the flanged cover on concrete inft2deducting the area of the CaCl2dish, andT = exposure time in hours.7.6 To convert test results to SI, multiply by
41、 56.51 to obtainresults in g/(s m2).7.7 Use the following guidelines to determine the number oftest locations to be utilized simultaneously.7.7.1 Three test locations for areas up to 1000 ft2(100 m2).7.7.2 Add one additional test for each 1000 ft2(100 m2)orfraction thereof.NOTE 4When conducting mois
42、ture emission tests, the test unitsshould not be concentrated but shall be located in various parts of the floorarea. One unit shall be placed near the center with others being placedaround perimeter. Selection of test sites shall include areas of potentialmoisture, that is, joints and perimeter of
43、building.8. Precision and Bias8.1 Precision, characterized by repeatability Sr, r and repro-ducibility SR, R has been determined for the following mate-rials to be:Material Average Sr SR R RConcrete slab 68 5.94 lb/100 ft2/24 h 0.24 0.32 0.68 0.908.1.1 This precision statement is provisional.8.2 No
44、information can be presented on the bias of theprocedure in Test Method F1869 for measuring moisture vaporemission rates from concrete because no material having anaccepted reference value is available.9. Keywords9.1 anhydrous calcium chloride; moisture vapor emissionrate; quantitative calcium chlor
45、ide; resilient flooring; RMAreferee testASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the
46、 riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of
47、 this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldm
48、ake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).F1869 093
