1、Designation:C1305/C1305M16Standard Test Method forCrack Bridging Ability of Liquid-Applied WaterproofingMembrane1This standard is issued under the fixed designation C1305/C1305M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the yea
2、r 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.1.Scope1.1 This test method covers a laboratory procedure fordetermining the ability of a waterproofing membrane to bridgea crack
3、 in the substrate.1.2 There are no ISO standards similar or equivalent to thisASTM standard.1.3 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 independen
4、tly of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.4 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
5、 practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C33/C33M Specification for Concrete AggregatesC150/C150M Specification for Portland CementC717 Terminology of Building Seals and SealantsC1375 Guide for Substrates Used in Tes
6、ting Building Sealsand Sealants3.Terminology3.1 DefinitionsRefer to Terminology C717 for definitionsof technical terms used in this test method.4.Summary of Test Method4.1 This test method consists of casting five specimens ofmembrane on mortar substrates containing a preexisting crackand allowing t
7、hem to age 14 days at standard conditionsfollowed by seven days in an air-circulating oven at 70C158F,placing them in a test machine,and subjecting theassembly to ten cycles of movement.5.Significance and Use5.1 This test method is used to indicate a waterproofingmembranes ability to maintain its in
8、tegrity while bridging apreexisting crack in the substrate at low ambient temperatures,when the membrane is least likely to be flexible.6.Comparison to Other Standards6.1 The committee with jurisdiction over this standard is notaware of any comparable standards published by other orga-nizations.7.Ap
9、paratus and Materials7.1 Automatic Extension and Compression Machine,withcold box capable of maintaining 26 6 1C 15 6 2F.7.2 Circulating Hot-Air Oven.7.3 Portland Cement,high early strength conforming toSpecification C150/C150M,Type III.7.4 Fine Aggregate,conforming to Specification C33/C33M.7.5 Alu
10、minum Angles,75 by 50 by 25 mm 3 by 2 by 1 in.,if needed.7.6 Epoxy Cement,or gun-grade construction mastic,ifneeded.7.7 Masking Tape.7.8 Molds,six,50 by 25 by 25 mm 2 by 1 by 1 in.insidedimensions,or 75 by 88 by 25 mm 0.5 by 1.5 by 1 in.notchesin either side,as shown in Fig.1,for casting mortar bloc
11、ks.8.Preparation of Substrates8.1 Prepare mortar blocks in sizes required for testing inaccordance with the requirements in Guide C1375.1This test method is under the jurisdiction ofASTM Committee D08 on Roofingand Waterproofing and is the direct responsibility of Subcommittee D08.22 onWaterproofing
12、 and Dampproofing Systems.Current edition approved Nov.1,2016.Published November 2016.Originallyapproved in 1995.Last previous edition approved in 2008 as C1305 08.DOI:10.1520/C1305_C1305M-16.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at servic
13、eastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 8.2 If required to fit the test assembly into the jaws of thetes
14、ting machine,aluminum angles may be adhered to the sidesof the substrates after the membrane has been applied.38.3 Other substrates may be used and shall be prepared toprovide a clean,level test surface.Prepare glass and aluminumsubstrates in accordance with the requirements in GuideC1375.Other prep
15、aration requirements shall be as agreed uponbetween the supplier and the specifier.9.Conditioning/Mixing9.1 Store all materials to be tested at standard conditions of23 6 2C 73.4 6 3.6F and 50 6 5%relative humidity forat least 24 h before any test specimens are prepared.9.2 Follow the manufacturers
16、instructions for mixing andpreparing membrane materials for testing.Thoroughly stir onecomponent samples before using.Mix two component com-pounds in the ratio,and as recommended by the manufacturer.10.Procedure10.1 Five assemblies shall be tested.10.2 To prepare the test assembly,set two blocks as indi-cated in Fig.1,with sides touching,in a sand bed.Level thetest surface(top)and bind the blocks together using maskingtape.Spread the test compound to produce a uniform dry filmthickness of 1.50 6
