1、Designation: D6690 12D6690 15Standard Specification forJoint and Crack Sealants, Hot Applied, for Concrete andAsphalt Pavements1This standard is issued under the fixed designation D6690; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revisi
2、on, 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 specification covers joint and crack sealants of the hot applied type intended for use in sealing
3、 joints and cracks inPortland Cement Concrete and Asphaltic Concrete Pavements.1.2 This specification does not purport to cover the properties required of sealants for use in areas of Portland Cement concreteor asphaltic pavement subject to jet fuel or other fuel spillage such as vehicle and/or airc
4、raft refuel and maintenance areas.1.3 The values stated in SI units are the standard. to be regarded as standard. No other units of measurement are included inthis standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibi
5、lityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatoryrequirements prior to use.2. Referenced Documents2.1 ASTM Standards:2D36 Test Method for Softening Point of Bitumen (Ring-and-Ball Apparatus)D5167 Practice for Melting o
6、f Hot-Applied Joint and Crack Sealant and Filler for EvaluationD5249 Specification for Backer Material for Use with Cold- and Hot-Applied Joint Sealants in Portland-Cement Concrete andAsphalt JointsD5329 Test Methods for Sealants and Fillers, Hot-Applied, for Joints and Cracks in Asphaltic and Portl
7、and Cement ConcretePavements2.2 Federal Specification:3SS-S-1410C3. General Requirements3.1 The sealant shall be composed of a mixture of materials that will form a resilient and adhesive compound capable ofeffectively sealing joints and cracks in concrete and asphaltic pavements against the infiltr
8、ation of moisture and foreign materialthroughout repeated cycles of expansion and contraction with temperature changes, and that will not, at ambient temperatures, flowfrom the joint or be picked up by vehicle tires. The material shall be capable of being brought to a uniform pouring consistencysuit
9、able for completely filling the joints without inclusion of large air holes or discontinuities and without damage to the material.It shall remain relatively unchanged in application characteristics for at least 6 h at the recommended application temperature inthe field.4. Classification4.1 Type IA j
10、oint and crack sealant capable of maintaining an effective seal in moderate climates. The material is tested forlow temperature performance at 18C using 50 % extension.1 This specification is under the jurisdiction of ASTM Committee D04 on Road and Paving Materials and is the direct responsibility o
11、f Subcommittee D04.33 on FormedIn-Place Sealants for Joints and Cracks in Pavements.Current edition approved July 15, 2012Dec. 1, 2015. Published January 2008January 2016. Originally approved in 2001. Last previous edition approved in 20072012 asD6690 07.D6690 12. DOI: 10.1520/D6690-12.10.1520/D6690
12、-15.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from U.S. Government Printing Office Superint
13、endent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http:/www.access.gpo.gov.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be te
14、chnically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, P
15、O Box C700, West Conshohocken, PA 19428-2959. United States14.2 Type IIA joint and crack sealant capable of maintaining an effective seal in most climates. Material is tested for lowtemperature performance at 29C using 50 % extension.4.3 Type IIIA joint and crack sealant capable of maintaining an ef
16、fective seal in most climates. Material is tested for lowtemperature performance at 29C using 50 % extension. Special tests are included (formerly Federal Spec SS-S-1401C).4.4 Type IVAjoint and crack sealant capable of maintaining an effective seal in climates experiencing very cold temperatures.Mat
17、erial is tested for low temperature performance at 29C using 200 % extension.NOTE 1It is the responsibility of the user agency to determine which type is most applicable to their conditions.5. Physical Requirements5.1 Maximum Heating TemperatureThe maximum heating temperature is the highest temperat
18、ure to which a sealant can beheated, and still conform to all the requirements specified herein. For purposes of testing as specified hereinafter, the applicationtemperature shall be the same as the maximum heating temperature. The maximum heating temperature shall be set forth by themanufacturer, s
19、hall be shown on all containers and shall be provided to the testing agency before any laboratory tests are begun.5.2 The sealant shall conform to the requirements prescribed in Table 1.6. Sampling and Heating6.1 Sampling:6.1.1 Samples may be taken at the plant or warehouse prior to delivery or at t
20、he time of delivery, at the option of the purchaser.If sampling is done prior to shipment, the inspector representing the purchaser shall have free access to the material to be sampled.The inspector shall be afforded all reasonable facilities for inspection and sampling which shall be conducted so a
21、s not to interfereunnecessarily with the operation of the works.6.1.2 Samples shall consist of one of the manufacturers original sealed containers selected at random from the lot or batch offinished material. A batch or lot shall be considered as all finished material that was manufactured simultane
22、ously or continuouslyas a unit between the time of compounding and the time of packaging or placing in shipping containers.6.1.3 Obtain the sealant portion for testing from the selected manufacturers original sealed container in accordance withPractice D5167. The sample portion added to and heated i
23、n the melter shall weigh 800 6 50 g for Types I, II, IV, and 1600 6 50g for Type III. Both pots of the melter described in Practice D5167 shall be used for Type III.6.2 HeatingHeat the material in accordance with Practice D5167.6.2.1 The oil bath in the melter shall be heated to a temperature betwee
24、n the sealants maximum heating temperature and 42Cabove the sealants maximum heating temperature. (Never allow the oil temperature to exceed 288C). Add the sealant to themelter according to the instructions in Practice D5167. After the sample has been added to the melter, regulate the oil temperatur
25、ewithin the listed temperature limits while raising the sealants temperature to manufacturers recommended maximum heatingtemperature within the required 1 hour of time, as stated in Practice D5167. Immediately upon reaching the maximum heatingtemperature, for Types I, II and IV pour all specimens fo
26、r testing directly including penetration, resilience, bond, softening pointand compatibility. Type III shall be heated for 3 h from the time of first addition to the melter before pouring all specimens.TABLE 1Type I Type II Type III Type IVCone Penetrationat 25C90 max. 90 max. 90 max. 90-150Softenin
27、g Point C (F) 80 (176) minimum 80 (176) minimum 80 (176) minimum 80 (176) minimumSoftening Point C 80 minimum 80 minimum 80 minimum 80 minimumBond, non-immersed Two out of three 25.4 mmspecimens passA 5 cyclesat 50 % ext. at -18CThree 12.7 mm SpecimenspassA 3 cycles at 50 %ext. at -29CThree 12.7 mm
28、SpecimenspassA 3 cycles at 50 %ext. at -29CThree 12.7 mm SpecimenspassA 3 cycles at 200 %ext. at -29CBond, non-immersed Two out of three 25 0.4 mmspecimens passA 5 cyclesat 50 % ext. at -18CThree 12.5 0.2 mmSpecimenspassA 3 cycles at 50 %ext. at -29CThree 12.5 0.2 mmSpecimenspassA 3 cycles at 50 %ex
29、t. at -29CThree 12.5 0.2 mmSpecimenspassA 3 cycles at 200 %ext. at -29CBond, water immersed - - Three 12.7 mm specimenspassA 3 cycles at 50 %ext. at -29C-Resilience, % - 60 min. 60 min. 60 min.Oven Aged Resilience,% - - 60 min. -Asphalt Compatibility PassB PassB PassB PassBA The development at any t
30、ime during the test procedure of a crack, separation, or other opening that at any point is over 6 mm deep, in the sealant or between the sealantand concrete block shall constitute failure of the test specimen. The depth of the crack, separation or other opening shall be measured perpendicular to th
31、e side of thesealant showing the defect.B There shall be no failure in adhesion, formation of an oily exudate at the interface between the sealant and asphaltic concrete or other deleterious effects on the asphalticconcrete or sealant when tested at 60C.D6690 1527. Test Methods: Methods7.1 Specimen
32、ConditioningCondition the penetration, resilience, bond to concrete, softening point and compatibilityspecimens at standard laboratory conditions for 24 6 4 h as specified in test MethodTest Methods D5329 prior to beginning anytesting.7.2 Cone PenetrationDetermine cone penetration according to Metho
33、d Test Methods D5329 for Cone Penetration,conepenetration, non-immersed.7.3 Softening PointDetermine the Softening Point according to Test Method D36. USP Glycerin shall be used for the liquid.7.4 Bond, Non-ImmersedDetermine the bond according to Test MethodMethods D5329 for Bond,bond, non-immersed.
34、7.4.1 After final scrubbing and blotting specified in Test Method D5329, air dry the blocks on their 12.7 mm 25.4 mm endsat standard laboratory conditions for 1 h 6 10 min. prior to pouring bond specimens.7.4.1 Immediately after conditioning the blocks as in 7.4.1Test Methods D5329, assemble the blo
35、cks with spacers as specifiedin Test MethodMethods D5329 so the opening between the blocks will form a cured sealant block that is 25.4 mm 25.0 6 0.10.4mm wide for Type I and 12.712.5 6 0.10.2 mm wide for Type II , II, Type III, and Type IV.7.4.2 After pouring material into the block opening, condit
36、ion the specimen as in 7.1. After conditioning, remove spacers andtrim off excess material with a hot knife being careful not to pull sealant from the block. Condition the test specimens not less than4 h at the temperature specified in Table 1 for the Specific Type of Sealant. Immediately extend the
37、 specimen to the prescribedpercentage in Table 1 using the apparatus and rate described in D5329.7.4.3 Re-compress and re-extend according to Test MethodMethods D5329 for the total number of cycles prescribed in Table1. The required cycles shall be completed within a 5-day period from the time of po
38、uring for Type II, III, and IV, and a 7-day periodfor Type I.7.5 Bond, Water Immersed, Type III OnlyDetermine the Bondbond according to ASTM Test Methods D5329. Prepare thespecimens as in section 7.4 except after conditioning, immerse in water for 96 h as described in Test Methods D5329. Testing sha
39、llbe completed in 5 days from removal from the water for Types III.7.6 ResilienceUse Test MethodMethods D5329 for Resilience.resilience.7.7 Oven Aged ResilienceAge specimen 70C for 168 h. Use Test MethodMethods D5329.7.8 Asphalt CompatibilityTest asphalt compatibility according to Test MethodMethods
40、 D5329.8. Packaging and Marking8.1 The sealing compound shall be delivered in the manufacturers original containers. Each container shall be legibly markedwith the name of the manufacturer, the trade name of the sealant, the manufacturersmanufacturers batch, or lot number andspecification number and
41、 type, the minimum application temperature and the maximum heating temperature. The maximumheating temperature must be at least 11C (20F) higher than the minimum application temperature.9. Keywords9.1 hot applied; joint sealantAPPENDIX(Nonmandatory Information)X1. FIELD PRECAUTIONSX1.1 Some if not a
42、ll, materials conforming to this specification may be damaged by heating to too high a temperature, reheating,or by heating for too long a time. Care should be exercised to secure equipment for heating and application that is suitable for thepurpose and approved by the manufacturer of the material.
43、The material should be heated in a kettle or melter constructed as adouble boiler, with the space between the inner and outer shells filled with oil or other heat transfer medium. Thermostatic controlfor the heat transfer medium shall be provided and shall have sufficient sensitivity to maintain sea
44、lant temperature within themanufacturers specified application temperature range. Temperature indicating devices shall have intervals no greater than 5F(2.8C) and shall be calibrated as required to assure accuracy. The melter shall have a continuous sealant agitation and mixingsystem to provide unif
45、orm viscosity and temperature of material being applied. If equipped with an application system to deliversealant to the pavement, the melter shall incorporate a recirculation pump or other means of maintaining sealant temperature inthe delivery system. Sealant that has been damaged due to overheati
46、ng, reheating or prolonged heating may experience pooradhesion, softening or bleeding, difficult application, or jelling in the melter. Direct heating must not be used.D6690 153X1.2 Pavement joints in new construction for application of material covered by this specification should be dry, clean of
47、all scale,dirt, dust, curing compound, and other foreign matter. The sidewalls of the joint space to be sealed should then be thoroughlysandblasted, blown clean of loose sand by high-pressure air, and sealed by use of the melter-applicator described in X1.1.X1.3 When material covered by this specifi
48、cation is used for maintenance or resealing of joints that have contained either similaror dissimilar sealing material, it is recommended that the joint be dry, cleaned thoroughly with a plow, router, wire brush, concretesaw, or other suitable tool or tools designed for the purpose of neatly cleanin
49、g pavement joints. Loose material should be blownout. The sidewalls of the joint space to be sealed should be thoroughly sandblasted, blown free of loose sand with high-pressureair and then sealed with material by use of the melter-applicator described in X1.1.X1.4 The use of a backer material or bond breaker in the bottom of the joint to be filled with material covered by this specificationis recommended to control the depth of the sealant and achieve the desired shape factor, and to support the sealant
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