ASTM E514 E514M-2011 5000 Standard Test Method for Water Penetration and Leakage Through Masonry 《砖石建筑的水渗入和渗漏的标准试验方法》.pdf

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1、Designation: E514/E514M 11Standard Test Method forWater Penetration and Leakage Through Masonry1This standard is issued under the fixed designation E514/E514M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the year of last revisi

2、on. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This laboratory test method2provides a procedur

3、e fordetermining the resistance to water penetration and leakagethrough unit masonry subjected to wind-driven rain.1.2 This test method is not identical to and the results arenot the same as the field standard Test Method C1601.1.3 This test method evaluates the through-wall water pen-etration which

4、 is not the same as surface water penetrationevaluated by Test Method C1601.1.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the ot

5、her. Combiningvalues from the two systems may result in non-conformancewith the standard.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 this standard to establish appro-priate safety and health practice

6、s and determine the applica-bility of regulatory limitations prior to use. For a specifichazard statement, see Section 6.2. Referenced Documents2.1 ASTM Standards:3C270 Specification for Mortar for Unit MasonryC1232 Terminology of MasonryC1601 Test Method for Field Determination of Water Pen-etratio

7、n of Masonry Wall Surfaces2.2 American Concrete Institute Standard:4ACI 530/ASCE 5/TMS 402 Building Code Requirementsfor Masonry StructuresACI 530.1/ASCE 6/TMS 602 Specifications for MasonryStructures3. Terminology3.1 Definitions:3.1.1 surface water penetration, nwater that passesthrough the exterio

8、r face of the masonry.3.1.2 through-wall water penetration, nsurface water thatpenetrates through a wall and exits the interior face of themasonry.3.1.3 water penetration, nwater that passes into orthrough the masonry.3.1.4 wind-driven rain, nrain water that is directedagainst the surface of the wal

9、l by wind.3.2 For additional definitions of terms used in this testmethod, refer to Terminology C1232.4. Significance and Use4.1 This test method provides information that aids inevaluating the effect of four principal variables: materials,coatings, wall design, and workmanship.4.2 Water penetration

10、 and leakage through masonry issignificantly affected by air pressure in the test chamber. Datafrom tests made at different pressures are not comparable.4.3 The performance of a masonry wall is a function ofmaterials, construction, wall design, and maintenance. Inservice the performance will also de

11、pend on the rigidity ofsupporting structure and on the resistance of components todeterioration by various causes, such as corrosion, vibration,thermal expansion and contraction, curing, and others. It isimpossible to simulate the complex conditions encountered inservice, such as variations in wind

12、velocity, negative pressure,and lateral or upward moving air and water. Factors such aslocation, exposure, and wall openings should be considered.1This test method is under the jurisdiction of ASTM Committee C15 onManufactured Masonry Units and is the direct responsibility of SubcommitteeC15.04 on R

13、esearch.Current edition approved Dec. 15, 2011. Published January 2012. Originallyapproved in 1974. Last previous edition approved in 2009 as E514/E514M 09.DOI: 10.1520/E0514_E0514M-11.2This test method is based upon those used by the National Bureau of Standardsand described in NBS Report BMS7, “Wa

14、ter Permeability of Masonry Walls,” 1933,and NBS Report BMS82, “Water Permeability of Walls Built of Masonry Units,”1942.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refe

15、r to the standards Document Summary page onthe ASTM website.4Published by The Masonry Society, www.masonrysociety.org; American Con-crete Institute, www.aci-int.org; and American Society of Civil Engineers,www.asce.org.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM

16、 International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.4.4 Given the complexity of variables noted above, this testmethod establishes comparative behavior between variousmasonry wall constructions in a given laboratory.4.5 Even when a single laboratory te

17、sts the same walldesign utilizing the same wall materials and the same construc-tion practices, variables such as the level of skill of the masonbuilding the specimen, the temperature and humidity in thelaboratory at the time of construction, curing of the specimen,the moisture contents of the mater

18、ials used to build thespecimen, and even the use or lack of use of a lime and waterwash on the back of the specimen can affect the results of thetest making reliable comparisons dubious. For these reasonsand the multi-variables listed in 4.1, 4.2, and 4.3, a meaningful,useful, absolute wall leakage

19、rating standard is impractical anddiscouraged.4.6 This test method is similar to but distinct from field TestMethod C1601. This laboratory test method is designed to testlaboratory fabricated wall specimens. Field Test MethodC1601 is designed to test in-situ walls. This test methodmeasures the water

20、 that has penetrated into and through themasonry specimen and is collected. Test Method C1601determines water penetration of the masonry at its surface.Results from Test Method C1601 and Test Method E514/E514M are not the same.5. Apparatus5.1 Test ChamberUse a test chamber similar to thatshown in Fi

21、g. 1 and Fig. 2. Provide an opening with aminimum area of 1.08 m212 ft2. For example, 900 mm36 in. wide and 1200 mm 48 in. high is suitable. Line theedges of the chamber in contact with the specimen with aclosed-cell compressible gasket material or appropriate sealant.Provide an observation port in

22、the face of the chamber. Providea 19.0-mm 34-in. diameter corrosion-resistant spray pipe witha single line of 1.0-mm 0.04-in. diameter holes spaced 25.0mm 1 in. apart.5.2 Fixtures and Appurtenances to ChamberFixtures andappurtenances to the chamber shall include an air line withmanometer, a water li

23、ne with valves, a flow meter andmanometer and a water drain pipe at the bottom of thechamber. Position the water spray pipe so that the waterimpinges the specimen not more than 75.0 mm 3.00 in. belowthe top of the test chamber.NOTE 1A drain pipe that discharges into a reservoir equipped with anadjus

24、table depth air outlet pipe and top baffles has been found to reducesurge.5.3 ManometerMeasure the air pressure in the chamberusing a manometer or other device capable of measuring airpressures of at least 51 mm 2.0 in. of water (71.7 kPa10.4 psf) to an accuracy of 2.5 mm 0.1 in. or 3.6 kPa 0.52psf.

25、 Connect the manometer or other device to the chamberaway from the air inlet so that the air flow will not significantlyinfluence the pressure reading.5.4 Other equipment includes devices for handling thespecimen and measuring time, water quantities, temperature,and humidity.FIG. 1 Isometric Project

26、ion of Testing ChamberE514/E514M 1126. Hazards6.1 The use of this test method will require careful designconsideration of both air chamber and support of the wallsystem to avoid possible injury due to equipment or specimenfailure.7. Temperature and Humidity Conditions7.1 Maintain the air in the labo

27、ratory at a temperature of 246 8C 75 6 15F and a relative humidity of 55 6 25 %.8. Test Specimens8.1 Masonry MaterialsMasonry and associated materialsshall be representative of the construction or the materials thatare being considered. Precondition all materials by storing inlaboratory environment

28、for not less than 5 days before use.8.2 Size of Test WallsThe height and length of thespecimen shall provide a minimum of 1.08 m212 ft2 exposedto the test, plus at least a 200-mm 8-in. overlap on all edges.The minimum height or length of the specimen shall be 1.22 m4 ft. The length of the specimen s

29、hall be such that at least onehead joint in each course of masonry is exposed to the test.8.3 Building Wall SpecimensConstruct the specimen us-ing methods and workmanship being considered for the work(Note 2). Build the wall specimen on an inverted steel channelsection as shown in Fig. 2 (Note 3). A

30、lso, as shown in Fig. 2,build a lower flashing and upper water trough as described in8.3.1 and 8.3.2.NOTE 2Standards for masonry construction are contained in thefollowing documents: ACI 530/ASCE 5/TMS 402 Building Code Re-quirements for Masonry Structures and ACI 530.1/ASCE 6/TMS 602Specifications

31、for Masonry Structures.NOTE 3The top of the wall may require bracing to be stable.8.3.1 Install a lower flashing into a mortar joint that is atleast one course below the upper water trough. Pass the lowerflashing completely through the wall, upturn it on the chamberside, and seal with a bead of caul

32、k. Project this lower flashingout from the backside of the wall with a u or v profile designedto funnel water that passes through the bottom of the wall intoa collection device.8.3.2 Install an upper water trough in the bed joint imme-diately below the bottom of the test chamber. Project the upperwa

33、ter trough no more than 25 mm 1.0 in., or no more than thethickness of a face shell, into a mortar joint on the backside ofthe wall. Project this upper water trough out from the backsideof the wall with a u or v profile designed to funnel water thatpenetrates through the wall above the trough into a

34、 separatecollection device.8.4 Number of SpecimensTest at least 3 specimens.8.5 Storage of SpecimensRetain specimens in the labora-tory during storage enclosed in an impervious plastic wrapimmediately after construction and cured in this manner for 7days. After 7 days, remove the wrap and continue c

35、uring for atleast 7 more days in laboratory air.9. Procedure9.1 Apply a 10-mm 38-in. minimum thick coat of mortarparging to all exposed surfaces of the specimen except the backside of the wall and the area enclosed by the test chamber.9.1.1 For walls constructed with solid units and for wallsconstru

36、cted with hollow units which are filled solid with groutor other materials, apply a minimum 10 mm 38 in. thick coatof mortar parging to the top surface of the specimen. For wallsFIG. 2 General Arrangement of Water Penetration Testing Chamber SystemE514/E514M 113with open cells or cavities, seal an i

37、mpervious material such asa transparent plastic sheet capable of withstanding the testpressure to the top of the wall to prevent evaporation or airmovement through the top of the wall. If the top covering isremoved to permit viewing or photographing inside these voidspaces, do not remove for longer

38、than 10 min per hour oftesting.NOTE 4Historically, 10 mm 38 in. thick mortar parging has beenused as an air and moisture barrier on all exposed surfaces except thebackside of the wall and the area enclosed by the test chamber.Alternativecoating materials may be used if they provide resistance to mov

39、ement ofair and moisture that is the same as or greater than the mortar parging.Research has found that typical parge coats of Specification C270proportioned mortars have air permeances in the approximate range of 7.53 10-4to 7.5 3 10-3l/(sm2)1.5 3 10-4to 1.5 3 10-3ft3/min/ft2 andwater vapor permean

40、ces of approximately 1400 to 3100 ng/(sm2Pa) 25to 55 perm. Using a coating as a substitute material may not beappropriate for highly irregular surfaces such as split face architecturalconcrete masonry units because of difficulty of obtaining a seal with thetest chamber. In those cases, a 10 mm 38 in

41、. thick parge coat of mortarprovides a smooth surface to facilitate establishment of a seal.NOTE 5A lime and water wash may be brush applied to back face ofthe wall to make moisture detection easier on dark surfaces. A portlandcement and water wash should not be used.9.2 Mounting ChamberPosition the

42、 test chamber on thespecimen and clamp firmly in place, compressing the gasket orapplying a sealant to form a seal.NOTE 6Too much clamping force could crack the specimen.9.3 Adjust the rate of water application to 138 L/m23.4gal/ft2 of wall per hour.9.4 Simultaneously with the application of water,

43、increasethe air pressure within the chamber. If the pressure is notspecified, apply a pressure of 500 Pa 10 lbf/ft2. Supplyslightly more air than is needed to maintain pressure andadjust, if necessary, to prevent excessive surge in the waterreservoir.9.5 Maintain the specified conditions for a perio

44、d of not lessthan 4 h.NOTE 7 Care should be taken in specifying the test duration. The testshould be long enough to permit evaluation of the materials, coatings,design, and workmanship.10. Record of Observation10.1 During the4hoftesting, make observations at 30-minintervals. If testing is extended b

45、eyond 4 h, establish observa-tion intervals beyond4hasrequired to document specimenperformance. Record the following:10.1.1 Time of appearance of dampness on back of speci-men.10.1.2 Time of appearance of first visible water on the backof the specimen.10.1.3 Area of dampness on back of wall expresse

46、d as apercent of the chamber area.10.1.4 Total water collected from the upper water trough.10.1.5 Total water collected from the lower flashing.11. Retesting11.1 If required, return the specimens to storage and retest atage 28 days or later and re-evaluate.12. Report12.1 Report the following informa

47、tion:12.1.1 Description of all materials including coatings, ma-sonry units, mortar materials, and composition of mortar usedto construct the wall specimens, and their properties asdetermined by the appropriate standards.12.1.2 Description of specimen wall design and details ofconstruction. Include

48、photographs and drawings as necessary.12.1.3 If an alternative air and moisture barrier material isused as a substitute for the mortar parging at the sides and frontof the test specimen, provide the type, minimum appliedthickness, manufacturer, and brand name of the substitutionmaterial.12.1.4 Detai

49、led description of the quality of workmanshipused in construction of test specimens.12.1.5 Conditions of test.12.1.6 Record of observations as required in Section 9.12.1.7 Record of temperature and humidity in the laboratoryduring construction, curing, and test periods.12.1.8 Age of test specimen at the time of test, and re-test,if applicable.13. Precision and Bias13.1 No statement is made either on the precision or on thebias of this test method for testing water penetration or leakagethrough masonry du