1、Designation:D198513Standard Practice forPreparing Concrete Blocks for Testing Sealants,for Jointsand Cracks1This standard is issued under the fixed designation D1985;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last re
2、vision.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 practice covers the preparation of concrete blocksused for testing of joint and crack sealants for portland cementconcrete an
3、d asphaltic concrete pavements.There are numer-ous standard material specifications that use concrete blocksprepared according to this practice.Refer to the specificstandard material specification of interest to determine whichtests apply and refer to the test methods for each specific test.1.2 The
4、values stated in SI units are to be regarded as thestandard.The values given in parentheses are provided forinformation purposes only.1.3 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 establi
5、sh appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2C33 Specification for Concrete AggregatesC150 Specification for Portland CementC192/C192M Practice for Making and Curing Concrete TestSpecimen
6、s in the LaboratoryE171 Practice for Conditioning and Testing Flexible BarrierPackaging3.Significance and Use3.1 It is intended that this practice may be used bymanufacturers,users,and testing agencies.The use of thispractice establishes a uniform procedure for preparing concreteblocks for the testi
7、ng of sealants.It is not intended to establishtest procedures or conditions of test which are associated witheach of the joint sealants.4.Standard Conditions4.1 The laboratory atmospheric conditions,hereinafter re-ferred to as standard conditions,shall be in accordance withSpecification E171,(23 6 2
8、C(73.4 6 3.6F)and 50%6 5%relative humidity).5.Concrete Block Preparation35.1 MaterialsThe aggregate shall conform to Specifica-tion C33,except as specified herein.The aggregate gradingshall be as shown in Table 1.The coarse aggregate shall consistof crushed limestone(plus 95%CaCO3)having a waterabso
9、rption of not more than 1.5%.The fine aggregate shallconsist of crushed limestone and shall be manufactured fromthe same parent rock as the coarse aggregate.4The portlandcement shall conform to ASTM Specification C150,Type II.The concrete shall have a water-cement ratio of 0.49,a cementfactor of 335
10、 6 30 kg/m3(6.0 6 0.5 bags of cement per cubicyard),and a slump of 63 6 13 mm(212612in.).The ratio offine aggregate to total aggregate shall be approximately 40%by solid volume.The air content shall be 5.0 6 0.5%and shallbe obtained by the addition to the batch of an air-entrainingagent.Prepare the
11、concrete in accordance with the proceduredescribed in Test Method C192/C192M.5.1.1 Alternate Block MaterialsAs an alternate to thematerials specified in 5.1,the blocks may be prepared using aconcrete mixture which meets local requirements for concretepavements.Use the materials specified in 5.1 for
12、all refereetesting.5.2 Block PreparationUse a minimum 100 mm by 300mm by 75 mm(4 in.wide by 12 in.long by 3 in.deep)mold,1This practice is under the jurisdiction of ASTM Committee D04 on Road andPaving Materials and is the direct responsibility of Subcommittee D04.33 onFormed In-Place Sealants for J
13、oints and Cracks in Pavements.Current edition approved July 1,2013.Published August 2013.Originallyapproved in 1991.Last previous edition approved in 2008 as D1985 03(2008).DOI:10.1520/D1985-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serv
14、iceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The sole source of supply of blocks made to this specification are availablefrom USAE Laboratory,Missouri River Division,429 S18th Street,Omaha,NE68101.If you are aware of
15、 alternative suppliers,please provide this information toASTM International Headquarters.Your comments will receive careful consider-ation at a meeting of the responsible technical committee,1which you may attend.4The sole source of supply of aggregate meeting this specification is availablefrom Pet
16、e Lien&Sons Inc.,P.O.Box 440,Rapid City,SD.If you are aware ofalternative suppliers,please provide this information to ASTM InternationalHeadquarters.Your comments will receive careful consideration at a meeting of theresponsible technical committee,1which you may attend.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 made from metal or plastic and provided with a metal or plasticbase plate.Provide means for securing the base plate to
