1、Designation: D5385/D5385M 93 (Reapproved 2014)1Standard Test Method forHydrostatic Pressure Resistance of WaterproofingMembranes1This standard is issued under the fixed designation D5385/D5385M; the number immediately following the designation indicates theyear of original adoption or, in the case o
2、f revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1NOTEUnits information was editorially corrected in May 2014.1. Scope1.1 This test method measures the hyd
3、rostatic resistance ofa waterproofing membrane under controlled laboratory condi-tions. This test method is not suitable for systems that rely onconfinement of the seams by the backfill since backfill is notpart of this test method.1.2 The values stated in either SI units or inch-pound unitsare to b
4、e regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 This standard does not purport to address all of th
5、esafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Terminology2.1 Definitions:2.1.1 post-formed crackfor the purposes
6、of this testmethod, one that forms and widens behind the waterproofingmembrane after it has been applied and cured.3. Significance and Use3.1 This test method tests the hydrostatic resistance of awaterproofing membrane and can be used to compare thehydrostatic resistance of waterproofing membranes.3
7、.2 No correlation has been established between the perfor-mance in this test method and that in the field.4. Apparatus4.1 Hydrostatic Testing Equipment, including a chamber(Fig. 1), and a clamping bracket (Fig. 2), and the gasket andfasteners to form the completed assembly (Fig. 3).4.2 Conditioning
8、Room, with forced air circulation to main-tain a temperature of 2 to 7C 35 to 45F for testing sheetsystems, 18 to 24C 65 to 75F for liquid-applied systems,and large enough to condition, prepare, and test samples.4.3 Source of Compressed Air, with pressure up to 690 kPa100 psi and with an air pressur
9、e controller to regulate the airin 103-kPa 15-psi increments.4.4 Cut Off Saw, equipped with a diamond or masonryblade, to prepare precast concrete blocks for testing substrates.4.5 ClockEither a common time piece or a 1-h intervaltimer.4.6 Silicone Vacuum Grease.4.7 Precast-Concrete Patio Blocks, 12
10、5-lb/ft3minimumdensity, 2100-psi minimum compressive strength, smoothsurfaced, 191 by 394 by 51 mm 712 by 1512 by 2 in.5. Test Substrate Preparation5.1 Cut an approximately 3.2-mm 18-in. wide kerf 44 mm134 in. deep lengthwise down the center of a 191 by 394 by51-mm 712 by 1512 by 2-in. concrete bloc
11、k.5.2 Cut a kerf in at least three blocks for each system to betested, and condition the blocks at the test temperature for atleast 24 h.5.3 Condition all other materials necessary for the system tobe tested at the test temperature for at least 4 h.6. Sample Preparation6.1 Prime, surface condition,
12、or otherwise prepare the sur-face of the block to receive the membrane, as recommended bythe manufacturer of the system. Permit the primer to dry orcure for the minimum time recommended by the manufacturer.6.2 For single-ply sheet samples, cut and install the mem-brane over the prepared block, with
13、a lap of the width1This test method is under the jurisdiction of ASTM Committee D08 on Roofingand Waterproofing and is the direct responsibility of Subcommittee D08.22 onWaterproofing and Dampproofing Systems.Current edition approved May 1, 2014. Published May 2014. Originallyapproved in 1993. Last
14、previous edition approved in 2006 as D5385 93 (2006).DOI: 10.1520/D5385_D5385M-93R14E01.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1recommended by the manufacturer perpendicular to and in thecenter of the kerf in the other side of
15、 the blocks. The edges ofthe lapped sheets should extend beyond the block edgesapproximately 6 mm 14 in. Roll membranes intended forpressure-sensitive application with four passes of a 12.7-kg28-lb, 152-mm 6-in. wide steel roller.FIG. 1 ChamberFIG. 2 Clamping BracketFIG. 3 Completed AssemblyD5385/D5
16、385M 93 (2014)126.3 Follow the manufacturers instructions for all mem-branes. Spacers may be used to aid in obtaining the thicknessrequired by the manufacturer.6.4 Allow all samples to cure or condition for at least 24 hor for the minimum time recommended by the manufacturer,whichever is greater.7.
17、Procedure7.1 Mount the test specimens using the following steps:7.1.1 Measure the width of the kerf in the block. Obtain two38 by 38-mm 112 by 112-in. metal spacers 3.2-mm 18-in.thicker than the width of the kerf.7.1.2 With the waterproofed surface down, support theblock at both ends directly under
18、the kerf. (A pair of the nutsused to secure the sample to the chamber have proved to beadequate supports.) Tap the block with a hammer to break thebalance of the block at the kerf.7.1.3 Insert the spacers selected in 7.1.1 at each end of thekerf, and rotate the blocks to hold the spacers firmly.7.1.
19、4 Coat both sides of the rubber gasket lightly withvacuum grease, and fit the gasket to the face of the testchamber.7.1.5 Set the membrane side of the block against the gasketand the steel bracket against the back of the block.7.1.6 Tighten the fasteners clamping the block to the cham-ber gradually,
20、 forcing the spacers to widen the joint behind themembrane (since the spacers are 3.2 mm 18 in. wider than thesaw kerf).7.2 Test the assembly as follows:7.2.1 With the air vent open, fill the chamber with water,and close the water valve. Monitor the assembly for leaks for30 min. Stop gasket leaks by
21、 tightening the perimeter fasteners.Record failure at 0 kPa 0 psi if leakage is through the jointsbetween the blocks.7.2.2 Attach the air line, and increase the air pressure in103-kPa 15-psi steps each hour, up to a maximum of 690 kPa100 psi; the last upward pressure step is 69 kPa 10 psi. If aleak
22、through the joint in the blocks is observed, record thepressure during the prior hour as the maximum pressure anddiscontinue the test.7.2.3 If the gasket has substantial leaks, the test is invalidand a new assembly should be prepared and tested.7.2.4 Allow the test to continue for1hat690kPa100 psi.I
23、f the air pressure has fallen below 552 kPa 80 psi at the endof the hour due to equipment failure, the test is invalid. Repeatthe test with a new prepared sample.8. Report8.1 Calculate the head of water from the pressure the samplewithstood successfully by multiplying the maximum pressurewithstood f
24、or at least1hbyasuitable factor. Multiply psi by2.31 to convert the pressure to feet of water, or multiply kPa by0.10 to convert pressure to metres of water.8.2 Report the source and thickness of the sample, the meanand standard deviation of the head of water withstoodsuccessfully, and all pertinent
25、 observations.9. Precision Bias9.1 No statement is made concerning either the precision orbias of this test method since the result states merely that thesystem tested passes this test at a specific pressure and does notleak water for 1 h.10. Keywords10.1 hydrostatic pressure resistance; membrane; w
26、ater-proofingASTM 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 riskof infringement of suc
27、h 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 this standard or for addit
28、ional 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 shouldmake your views known to the
29、 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/).D5385/D5385M 93 (2014)13
