1、Designation: D 6690 06aStandard Specification forJoint and Crack Sealants, Hot Applied, for Concrete andAsphalt Pavements1This standard is issued under the fixed designation D 6690; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, t
2、he year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers joint and crack sealants of thehot applied type intended for use in sealing join
3、ts and cracks inPortland Cement Concrete and Asphaltic Concrete Pavements.1.2 This specification does not purport to cover the proper-ties required of sealants for use in areas of Portland Cementconcrete or asphaltic pavement subject to jet fuel or other fuelspillage such as vehicle and/or aircraft
4、refuel and maintenanceareas.1.3 The values stated in SI units are 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 practices and dete
5、rmine the applica-bility of regulatory requirements prior to use.2. Referenced Documents2.1 ASTM Standards:2D36 Test Method for Softening Point of Bitumen (Ring-and-Ball Apparatus)D 1190 Specification for Concrete Joint Sealer, Hot-Applied Elastic Type3D 3405 Specification for Joint Sealants, Hot-Ap
6、plied, forConcrete and Asphalt Pavements3D 5167 Practice for Melting of Hot-Applied Joint andCrack Sealant and Filler for EvaluationD 5249 Specification for Backer Material for Use withCold- and Hot-Applied Joint Sealants in Portland-CementConcrete and Asphalt JointsD 5329 Test Methods for Sealants
7、and Fillers, Hot-Applied,for Joints and Cracks in Asphaltic and Portland CementConcrete Pavements2.2 Federal Specification:4SS-S-1410C3. General Requirements3.1 The sealant shall be composed of a mixture of materialsthat will form a resilient and adhesive compound capable ofeffectively sealing joint
8、s and cracks in concrete and asphalticpavements against the infiltration of moisture and foreignmaterial throughout repeated cycles of expansion and contrac-tion with temperature changes, and that will not, at ambienttemperatures, flow from the joint or be picked up by vehicletires. The material sha
9、ll be capable of being brought to auniform pouring consistency suitable for completely filling thejoints without inclusion of large air holes or discontinuities andwithout damage to the material. It shall remain relativelyunchanged in application characteristics for at least6hattherecommended applic
10、ation temperature in the field.4. Classification4.1 Type IA joint and crack sealant capable of maintain-ing an effective seal in moderate climates. The material istested for low temperature performance at 18C using 50 %extension (formerly Specification D 1190).4.2 Type IIA joint and crack sealant ca
11、pable of maintain-ing an effective seal in most climates. Material is tested for lowtemperature performance at 29C using 50 % extension (for-merly Specification D 3405).4.3 Type IIIA joint and crack sealant capable of maintain-ing an effective seal in most climates. Material is tested for lowtempera
12、ture performance at 29C using 50 % extension.Special tests are included (formerly Federal Spec SS-S-1401C).4.4 Type IVA joint and crack sealant capable of maintain-ing an effective seal in climates experiencing very coldtemperatures. Material is tested for low temperature perfor-mance at 29C using 2
13、00 % extension.NOTE 1It is the responsibility of the user agency to determine which1This specification is under the jurisdiction of ASTM Committee D04 on Roadand Paving Materials and is the direct responsibility of Subcommittee D04.33 onFormed In-Place Sealants for Joints and Cracks in Pavements.Cur
14、rent edition approved Dec. 1, 2006. Published December 2006. Originallyapproved in 2001. Last previous edition approved in 2006 as D 6690 06.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volu
15、me information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn.4Available from U.S. Government Printing Office Superintendent of Documents,732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West
16、Conshohocken, PA 19428-2959, United States.type is most applicable to their conditions.5. Physical Requirements5.1 Maximum Heating TemperatureThe maximum heat-ing temperature is the highest temperature to which a sealantcan be heated, and still conform to all the requirementsspecified herein. For pu
17、rposes of testing as specified hereinaf-ter, the application temperature shall be the same as themaximum heating temperature. The maximum heating tem-perature shall be set forth by the manufacturer, shall be shownon all containers and shall be provided to the testing agencybefore any laboratory test
18、s are begun.5.2 The sealant shall conform to the requirements pre-scribed in Table 1.6. Sampling and Heating6.1 Sampling:6.1.1 Samples may be taken at the plant or warehouse priorto delivery or at the time of delivery, at the option of thepurchaser. If sampling is done prior to shipment, the inspect
19、orrepresenting the purchaser shall have free access to the materialto be sampled. The inspector shall be afforded all reasonablefacilities for inspection and sampling which shall be conductedso as not to interfere unnecessarily with the operation of theworks.6.1.2 Samples shall consist of one of the
20、 manufacturersoriginal sealed containers selected at random from the lot orbatch of finished material. A batch or lot shall be considered asall finished material that was manufactured simultaneously orcontinuously as a unit between the time of compounding andthe time of packaging or placing in shipp
21、ing containers.6.1.3 Obtain the sealant portion for testing from the selectedmanufacturers original sealed container in accordance withPractice D 5167. The sample portion added to and heated in themelter shall weigh 800 6 50 g for Types I, II, IV, and 1600 650 g for Type III. Both pots of the melter
22、 described in PracticeD 5167 shall be used for Type III.6.2 HeatingHeat the material in accordance with PracticeD 5167.6.2.1 The oil bath in the melter shall be heated to atemperature between the sealants maximum heating tempera-ture and 42C above the sealants maximum heating tempera-ture. (Never al
23、low the oil temperature to exceed 288C). Addthe sealant to the melter according to the instructions inPractice D 5167.After the sample has been added to the melter,regulate the oil temperature within the listed temperature limitswhile raising the sealants temperature to manufacturersrecommended maxi
24、mum heating temperature within the re-quired 1 hour of time, as stated in Practice D 5167. Immedi-ately upon reaching the maximum heating temperature, poursamples for testing, except for Type III which shall be heatedfor 3 h from the time of first addition to the melter.7. Test Methods7.1 Specimen C
25、onditioningCondition all specimens atstandard laboratory conditions for 24 6 4 h as specified in testMethod D 5329 prior to beginning any testing.7.2 Cone PenetrationDetermine cone penetration accord-ing to Method D 5329 for Cone Penetration, non-immersed.7.3 Softening PointDetermine the Softening P
26、oint accord-ing to Test Method D36.7.4 Bond, Non-ImmersedDetermine the bond accordingto Test Method D 5329 for Bond, non-immersed.7.4.1 After final scrubbing and blotting specified in TestMethod D 5329, air dry the blocks on their 12.7 mm 3 25.4mm ends at standard laboratory conditions for 1 h 6 10
27、min.prior to pouring bond specimens.7.4.2 Immediately after conditioning the blocks as in 7.4.1,assemble the blocks with spacers as specified in Test MethodD 5329 so the opening between the blocks will form a curedsealant block that is 25.4 mm 6 0.1 mm wide for Type I and12.7 6 0.1 mm wide for Type
28、II , Type III, and Type IV.7.4.3 After pouring material into the block opening, condi-tion the specimen as in 7.1. After conditioning, remove spacersand trim off excess material with a hot knife being careful notto pull sealant from the block. Condition the test specimens notless than 4 h at the tem
29、perature specified in Table 1 for theSpecific Type of Sealant. Immediately extend the specimen tothe prescribed percentage in Table 1 using the apparatus andrate described in D 5329.7.4.4 Re-compress and re-extend according to Test MethodD 5329 for the total number of cycles prescribed in Table 1.TA
30、BLE 1Type I Type II Type III Type IVCone Penetrationat 25C90 max. 90 max. 90 max. 90-150Softening Point C (F) 80 (176) minimum 80 (176) minimum 80 (176) minimum 80 (176) minimumBond, non-immersed Two out of three 25.4 mmspecimens passA5 cyclesat 50 % ext. at -18CThree 12.7 mm SpecimenspassA3 cycles
31、at 50 %ext. at -29CThree 12.7 mm SpecimenspassA3 cycles at 50 %ext. at -29CThree 12.7 mm SpecimenspassA3 cycles at 200 %ext. at -29CBond, water immersed - - Three 12.7 mm specimenspassA3 cycles at 50 %ext. at -29C-Resilience, % - 60 min. 60 min. 60 min.Oven Aged Resilience,% - - 60 min. -Asphalt Com
32、patibility PassBPassBPassBPassBAThe development at any time during the test procedure of a crack, separation, or other opening that at any point is over 6 mm deep, in the sealant or betweenthesealant and concrete block shall constitute failure of the test specimen. The depth of the crack, separation
33、 or other opening shall be measured perpendicular to the sideof the sealant showing the defect.BThere 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 theasphaltic concrete or sealant when tested
34、 at 60C.D 6690 06a2The required cycles shall be completed within a 5-day periodfrom the time of pouring for Type II, III, and IV, and a 7-dayperiod for Type I.7.5 Bond, Water Immersed, Type III OnlyDetermine theBond according to ASTM D 5329. Prepare the specimens as insection 7.4 except after condit
35、ioning, immerse in water for 96h as described in D 5329. Testing shall be completed in 5 daysfrom removal from the water for Types III.7.6 ResilienceUse Test Method D 5329 for Resilience.7.7 Oven Aged ResilienceAge specimen 70C for 168h. Use Test Method D 5329.7.8 Asphalt CompatibilityTest asphalt c
36、ompatibility ac-cording to Test Method D 5329.8. Packaging and Marking8.1 The sealing compound shall be delivered in the manu-facturers original containers. Each container shall be legiblymarked with the name of the manufacturer, the trade name ofthe sealant, the manufacturers batch, or lot number a
37、ndspecification number and type, the minimum application tem-perature and the maximum heating temperature. The maximumheating temperature must be at least 11C (20F) higher thanthe minimum application temperature.9. Keywords9.1 hot applied; joint sealantAPPENDIX(Nonmandatory Information)X1.X1.1 Some
38、if not all, materials conforming to this specifi-cation may be damaged by heating to too high a temperature,reheating, or by heating for too long a time. Care should beexercised to secure equipment for heating and application thatis suitable for the purpose and approved by the manufacturer ofthe mat
39、erial. The material should be heated in a kettle or melterconstructed as a double boiler, with the space between the innerand outer shells filled with oil or other heat transfer medium.Thermostatic control for the heat transfer medium shall beprovided and shall have sufficient sensitivity to maintai
40、nsealant temperature within the manufacturers specified appli-cation temperature range. Temperature indicating devices shallhave intervals no greater than 5F (2.8C) and shall becalibrated as required to assure accuracy. The melter shall havea continuous sealant agitation and mixing system to provide
41、uniform viscosity and temperature of material being applied. Ifequipped with an application system to deliver sealant to thepavement, the melter shall incorporate a recirculation pump orother means of maintaining sealant temperature in the deliverysystem. Sealant that has been damaged due to overhea
42、ting,reheating or prolonged heating may experience poor adhesion,softening or bleeding, difficult application, or jelling in themelter. Direct heating must not be used. As a means ofascertaining whether or not the material covered by thisspecification is being or has been damaged in the field as are
43、sult of overheating, reheating, or prolonged heating, flowpanel specimens may be prepared periodically by drawing offsealant directly from the melter-applicator during sealingoperations and then tested for flow according to the methods oftesting materials covered by this specification. Flow in exces
44、sof 3.0 mm for Type II, III, and IV, and 5.0 mm for Type I wouldindicate damage to material caused by improper heatingprocedures.X1.2 Pavement joints in new construction for application ofmaterial covered by this specification should be dry, clean ofall scale, dirt, dust, curing compound, and other
45、foreign matter.The sidewalls of the joint space to be sealed should then bethoroughly sandblasted, blown clean of loose sand by high-pressure air, and sealed by use of the melter-applicator de-scribed in X1.1.X1.3 When material covered by this specification is usedfor maintenance or resealing of joi
46、nts that have containedeither similar or dissimilar sealing material, it is recommendedthat the joint be dry, cleaned thoroughly with a plow, router,wire brush, concrete saw, or other suitable tool or toolsdesigned for the purpose of neatly cleaning pavement joints.Loose material should be blown out
47、. The sidewalls of the jointspace to be sealed should be thoroughly sandblasted, blownfree of loose sand with high-pressure air and then sealed withmaterial by use of the melter-applicator described in X1.1.X1.4 The use of a backer material or bond breaker in thebottom of the joint to be filled with
48、 material covered by thisspecification is recommended to control the depth of thesealant and achieve the desired shape factor, and to support thesealant against indentation and sag. Backup materials and bondbreakers should be compatible with the material. Due to theelevated temperatures of applicati
49、on of material covered bythis specification, care should be exercised in the selection ofthe suitable backer materials. Refer to Specification D 5249 forrecommended backer materials.X1.5 Care should be practiced in the application of materialcovered by this specification to avoid overfilling of the jointspace. Joints should be filled in a neat workmanlike mannerfrom18 to14 in. (3 to 6 mm) below the adjacent pavementsurface.D 6690 06a3ASTM International takes no position respecting the validity of any patent rights asserted
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