1、Designation: D 1985 03 (Reapproved 2008)Standard Practice forPreparing Concrete Blocks for Testing Sealants, for Jointsand Cracks1This standard is issued under the fixed designation D 1985; the number immediately following the designation indicates the year oforiginal adoption or, in the case of rev
2、ision, 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 practice covers the preparation of concrete blocksused for testing of joint and crack sealants
3、 for portland cementconcrete and 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 method
4、s for each specific test.1.2 The 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
5、 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. Referenced Documents2.1 ASTM Standards:2C33 Specification for Concrete AggregatesC 150 Specification for Portland CementC 192/C 192M Practice fo
6、r Making and Curing ConcreteTest Specimens in the LaboratoryE 171 Specification for Atmospheres for Conditioning andTesting Flexible Barrier Materials3. Significance and Use3.1 It is intended that this practice may be used by manu-facturers, users, and testing agencies. The use of this practiceestab
7、lishes a uniform procedure for preparing concrete blocksfor the testing of sealants. It is not intended to establish testprocedures or conditions of test which are associated with eachof the joint sealants.4. Standard Conditions4.1 The laboratory atmospheric conditions, hereinafter re-ferred to as s
8、tandard conditions, shall be in accordance withSpecification E 171, (23 6 2C (73.4 6 3.6F) and 50 % 65 % 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
9、 coarse aggregate shall consistof crushed limestone (plus 95 % CaCO3) having a waterabsorption 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 Specificati
10、on C 150, Type II.The concrete shall have a water-cement ratio of 0.49, a cementfactor of 335 6 30 kg/m3(6.0 6 0.5 bags of cement per cubicyard), and a slump of 63 6 13 mm (212 612 in.). The ratio offine aggregate to total aggregate shall be approximately 40 %by solid volume. The air content shall b
11、e 5.0 6 0.5 % and shallbe obtained by the addition to the batch of an air-entrainingagent such as a neutralized thermoplastic resin.5Prepare theconcrete in accordance with the procedure described in TestMethod C 192/C 192M.5.1.1 Alternate Block MaterialsAs an alternate to thematerials specified in 5
12、.1, the blocks may be prepared using aconcrete mixture which meets local requirements for concretepavements. Use the materials specified in 5.1 for all refereetesting.1This practice is under the jurisdiction of ASTM Committee D04 on Road andPaving Materials and is the direct responsibility of Subcom
13、mittee D04.33 onFormed In-Place Sealants for Joints and Cracks in Pavements.Current edition approved July 1, 2008. Published July 2008. Originally approvedin 1991. Last previous edition approved in 2003 as D 1985 03.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM
14、 Customer Service at serviceastm.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, Oma
15、ha, NE68101. If you are aware of 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
16、specification is availablefrom Pete Lien or through the ASTM website(www.astm.org).TABLE 1 Aggregate GradingType Sieve Size % PassingCoarse aggregate 19.0 mm (34 in.) 97 to 10012.5mm(12 in.) 63 to 699.5mm(38 in.) 30 to 364.75 mm (No. 4) 0 to 3Fine aggregate 4.75 mm (No. 4) 1002.36 mm (No. 8) 82 to 881.18 mm (No. 16) 60 to 70600 mm (No. 30) 40 to 50300 mm (No. 50) 16 to 26150 mm (No. 100) 5 to 9FIG. 1 Concrete Block Slab (after removal from mold)D 1985 03 (2008)2
