1、Designation: C877 16Standard Specification forExternal Sealing Bands for Concrete Pipe, Manholes, andPrecast Box Sections1This standard is issued under the fixed designation C877; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、 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 external sealing bands to beused in conjunction with concrete pipe as defined in Te
3、rminol-ogy C822 and conforming to Specifications C14, C76, C412,C478, C506, C507, C655, C985, C1417, and C1433.1.1.1 Type I, Rubber and Mastic Bands.1.1.2 Type II, Plastic Film and Mesh Reinforced MasticBands.1.1.3 Type III, Chemically-Bonded Adhesive Butyl Bands.1.2 This specification is the inch-p
4、ound companion toSpecification C877M; therefore, no SI equivalents are pre-sented in the specification.NOTE 1This specification covers only the design and material of thesealing bands. Sealing bands covered by this specification are adequate,when properly installed, for external hydrostatic pressure
5、s up to 13 psi,(30 ft) without leakage. The amount of infiltration or exfiltration flow inan installed pipeline is dependent upon many factors other than the sealingbands; allowable quantities and suitable testing of the installed pipelineand system must be covered by other specifications.2. Referen
6、ced Documents2.1 ASTM Standards:2A167 Specification for Stainless and Heat-ResistingChromium-Nickel Steel Plate, Sheet, and Strip (With-drawn 2014)3C14 Specification for Nonreinforced Concrete Sewer, StormDrain, and Culvert PipeC76 Specification for Reinforced Concrete Culvert, StormDrain, and Sewer
7、 PipeC412 Specification for Concrete Drain TileC478 Specification for Circular Precast Reinforced ConcreteManhole SectionsC506 Specification for Reinforced Concrete Arch Culvert,Storm Drain, and Sewer PipeC507 Specification for Reinforced Concrete EllipticalCulvert, Storm Drain, and Sewer PipeC655 S
8、pecification for Reinforced Concrete D-LoadCulvert, Storm Drain, and Sewer PipeC681 Test Method for Volatility of Oil- and Resin-Based,Knife-Grade, Channel Glazing CompoundsC822 Terminology Relating to Concrete Pipe and RelatedProductsC985 Specification for Nonreinforced Concrete SpecifiedStrength C
9、ulvert, Storm Drain, and Sewer PipeC1417 Specification for Manufacture of Reinforced Con-crete Sewer, Storm Drain, and Culvert Pipe for DirectDesignC1433 Specification for Precast Reinforced Concrete Mono-lithic Box Sections for Culverts, Storm Drains, andSewersD36 Test Method for Softening Point of
10、 Bitumen (Ring-and-Ball Apparatus)D217 Test Methods for Cone Penetration of LubricatingGreaseD395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD471 Test Method for Rubber PropertyEffect of LiquidsD570 Test Method for Water
11、 Absorption of PlasticsD573 Test Method for RubberDeterioration in an AirOvenD624 Test Method for Tear Strength of Conventional Vul-canized Rubber and Thermoplastic ElastomersD882 Test Method for Tensile Properties of Thin PlasticSheetingD903 Test Method for Peel or Stripping Strength of Adhe-sive B
12、ondsD1171 Test Method for Rubber DeteriorationSurfaceOzone Cracking Outdoors (Triangular Specimens)D1278 Test Methods for Rubber from Natural SourcesChemical AnalysisD1682 Test Method for Breaking Load and Elongation ofTextile Fabric (Withdrawn 1992)31This specification is under the jurisdiction of
13、ASTM Committee C13 onConcrete Pipe and is the direct responsibility of Subcommittee C13.08 on Joints forPrecast Concrete Structures.Current edition approved Dec. 15, 2016. Published January 2017. Originallyapproved in 1977. Last previous edition approved in 2008 as C877 08. DOI:10.1520/C0877-16.2For
14、 referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referen
15、ced onwww.astm.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theD
16、evelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1D1963 Test Method for Specific Gravity of Drying Oils,Varnishes, Resins, and Related Materials at 25/25C(Withdrawn 2004)3D2202 Test Method for Slump o
17、f SealantsD2240 Test Method for Rubber PropertyDurometer Hard-nessD3407 Test Methods for Joint Sealants, Hot-Poured, forConcrete and Asphalt Pavements (Withdrawn 1996)3D3953 Specification for Strapping, Flat Steel and Seals3. Terminology3.1 DefinitionsFor definitions of terms relating to concretepip
18、e, see Terminology C822.4. Basis of Acceptance4.1 The acceptability of the sealing bands shall be deter-mined by the results of the physical tests prescribed in thisspecification, if and when required, and by inspection todetermine whether the sealing bands conform to this specifi-cation as to desig
19、n and freedom from defects.5. Materials and Manufacture for Sealing Bands5.1 Type I, Rubber and Mastic Bands:5.1.1 Sealing bands shall be composed of rubber, mastic,and protective film elements as schematically shown in Fig. 1and with dimensions as required in the following:5.1.1.1 Length of Sealing
20、 BandFor a given pipe size, thelength of the sealing band as furnished shall be such that afterbeing stretched longitudinally 8 to 12 % as part of theinstallation procedure, the sealing band will encircle theoutside perimeter of the pipe and overlap by an amount equalto, but not less than, the width
21、 of the sealing band. Sealingbands may be furnished in the required length or multiplesthereof.5.1.1.2 Width of Sealing BandThe width of the sealingband shall conform to the requirements of Table 1.5.1.2 Rubber ElementThe rubber element shall be ex-truded or molded from a high-grade rubber compound
22、andshall be cured in such a manner that any cross section will bedense, homogeneous, and free of porosity, blisters, pitting, andother imperfections. The basic polymer shall be natural,synthetic, or a blend of both and shall meet the physicalrequirements prescribed in Section 6. The rubber element s
23、hallhave ribs with a height of316 in., spaced34 to 114 in. apart,and have a thickness between the ribs of116 in. The thicknessof the ribs is not prohibited from varying from18 in. at the baseto132 in. at the top.5.1.3 Mastic ElementThe mastic element shall containrubber, reclaimed rubber and asphalt
24、ic derivatives, clay, and/orresin and shall meet the physical requirements prescribed inSection 6. The mastic element shall have a thickness of18 in.and be free of porous areas, air pockets, and contamination byforeign matter.5.1.4 Protective FilmThe protective film shall be watersoluble, have a 1-m
25、il (0.001 in.) thickness, and meet thephysical requirements prescribed in Section 6.NOTE 2The function of the film is to protect the mastic surface priorto installation. It is intended to dissolve away in the presence of moistureduring installation and expose the mastic for sealing.5.2 Type II Plast
26、ic Film and Mesh Reinforced MasticBands:5.2.1 Sealing bands shall be composed of a plastic film,reinforced, rubberized, asphalt, mastic coating with steel strapsas schematically shown in Fig. 2, with dimensions as requiredin the following:5.2.1.1 Length of Sealing Band for a Given Pipe SizeThelength
27、 of the sealing band shall be equal to the outsideperimeter of the joint plus 8 in. to provide for overlap.5.2.1.2 Width of Sealing BandThe width of the sealingband shall conform to the requirements of Table 1.5.2.2 Plastic Film ElementThe plastic film element shallbe an extended polymer which provi
28、des external reinforcementand shall meet the physical requirements prescribed in Section6.5.2.3 Mesh Reinforcement Element, The mesh reinforce-ment shall consist of a woven plastic mesh and shall meet thephysical requirements prescribed in Section 6.5.2.4 Rubberized Asphalt Mastic ElementThe rubberi
29、zed,asphalt, mastic element shall be a self adhering compositionand shall meet the requirements prescribed in Section 6.5.2.5 Tie Strap ElementThe tie strap element shall be steelstraps with a minimum width of58 in. and a minimumthickness of 0.020 in. and shall conform to SpecificationD3953. Steel s
30、traps shall be secured around the pipe withappropriate strapping tools as recommended by the sealingband manufacturer.FIG. 1 Sealing Band Type I Schematic (Not to Scale)TABLE 1 Required Sealing Band WidthEquivalent Circular PipeDiameter, in.Sealing Band Width, in.18 to 33 736 to 78 984 to 108 11114
31、to 144 13FIG. 2 Sealing Band Type II (Not to Scale)C877 1625.2.6 Tie Strap Sleeve ElementThe tie strap sleeve ele-ment shall consist of a minimum of 1 in. wide flat sleeve insidewhich the steel tie straps are not prohibited from sliding freely.The sleeve shall be made from woven or non-woven polypro
32、-pylene fabric with nominal weight of 3.5 oz/yd2.5.2.7 Release Sheet ElementThe disposable release sheetelement shall consist of a silicone coated paper with aminimum basis weight of 50 lb/3000 ft2.5.3 Type III, Chemically-Bonded Adhesive Butyl Bands:Type A (Plastic backing band)Type B (Rubber backi
33、ng band)5.3.1 Sealing bands shall be composed of a backing band,an applied continuous butyl adhesive coating, and an optionalrelease element (as schematically shown in Fig. 3), with widthand overlap dimensions as required by 5.3.1.1 and 5.3.1.2.Purchaser specified clamping devices or tie straps are
34、notprohibited to be used with these sealing bands.5.3.1.1 Length of Sealing Band for a Given Pipe SizeThelength of the sealing bands shall be equal to the outsideperimeter of the joint plus a minimum distance equal to twotimes the width of the material used to provide for overlap.This requirement sh
35、all allow the sealing bands to be appliedwithout stretching the product during application.5.3.1.2 Width of Sealing BandThe minimum width of thesealing band shall conform to the requirements of Table 2.5.3.2 Backing Band Element:5.3.2.1 Type A (Plastic Backing Band)The plastic backingband element sh
36、all be made from high density polyethyleneplastic conforming to the physical requirements prescribed inSection 65.3.2.2 Type B (Rubber Backing Band)The rubber used inthe rubber backing band element shall conform to the physicalproperty requirements of Section 6.5.3.3 Butyl Rubber Adhesive ElementThe
37、 butyl rubberadhesive element, conforming to the physical requirementsprescribed in Section 6, shall be a self-adhering semi-solid andshall be applied evenly and homogeneously to the backingband with a minimum thickness of:Type A (Plastic backing band) 0.03 in.Type B (Rubber backing band) 0.03 in.5.
38、3.4 Optional Primer ElementWhen required, a primershall be used as directed by the sealing band manufacturer andshall be spread in a continuous film at the intersection of thejoint. The application width shall be sufficient to ensure that theentire band area will contact only primed surfaces.5.3.5 O
39、ptional Tie Strap ElementThe optional tie strapelement shall be steel straps with a minimum width of58 in.and a minimum thickness of 0.20 in. and shall conform toSpecification D3953. Steel straps shall be secured around thepipe with appropriate strapping tools as recommended by thesealing band manuf
40、acturer.5.3.6 Optional Clamping DevicesOptional clamping de-vices shall be constructed of corrosion resistant materialsmeeting the physical properties and chemical compositionrequirements of Specification A167.5.3.7 Optional Release ElementThe optional release ele-ment shall consist of coated paper
41、or plastic that has demon-strated its suitability for this use.6. Requirements6.1 Type I, Rubber and Mastic Bands:6.1.1 The rubber element shall have the following physicalproperties when tested in accordance with 8.1.1:Tensile strength, min, psi 1200Elongation at break, min, % 300Shore durometer ha
42、rdness:min 60max 70Compression set, max, % of deflection 25Accelerated aging:Decrease in tensile strength, max, % oforiginal15Decrease in elongation, max, % of original 20Water absorption by weight, max, % 10Ozone resistance rating 06.1.2 The mastic element shall be capable of flowing, withinthe con
43、fines of the sealing band, to fill joint surface imperfec-tions against which the sealing band is placed and shall have noFIG. 3 Sealing Band Type III (Not to Scale)TABLE 2 Required Sealing Band Width (Type III)EquivalentCircular PipeDiameter, in.MinimumSealing BandWidth, in.EquivalentCircularManhol
44、eDiameter, in.MinimumSealing BandWidth, in.12 to 33 6 . .36 to 78 9 . .84 and larger 12 . . . 24 to 120 6C877 163deleterious effect on the rubber element. The mastic elementshall have the following physical properties when tested inaccordance with 8.1.2:Minimum MaximumAsh-inert matter 10 % 25 %Volat
45、iles 5 % 10 %Specific gravity 1.20 1.35Slump 0.01 in. 0.03 in.Penetration 200 3006.1.3 The protective film element shall have a maximumwater solubility of 60 s/0.8 mil of thickness when tested inaccordance with Section 8.6.2 Type II Plastic Film and Mesh Reinforced MasticBands:6.2.1 The plastic film
46、 element shall have the followingphysical properties when tested in accordance with 8.2.1:Tensile strength, min, psi 4000Elongation at break, min, % 100Tear resistance, min, psi 1500Water absorption, max, % 0.016.2.2 The reinforcing mesh element shall have the followingphysical properties when teste
47、d in accordance with 8.2.2:Tensile Strength, min, lb/in.warp 75fill 75Elongation at break, min, %warp 20fill 206.2.3 The rubberized asphalt mastic layer shall have thefollowing physical properties when tested in accordance with8.2.3:Minimum MaximumAsh-inert matter, % 8.0 15.0Volatiles, % 0.1 2.0Spec
48、ific gravity 0.95 1.05Softening temperature, min., F 175 Penetration, dmm 60 90Flow, mm 10 106.3 Type III, Chemically-Bonded Adhesive Butyl Bands:6.3.1 The backing band element shall have the followingphysical properties when tested in accordance with 8.3.1(plastic) and 8.3.2 (rubber):Type A (Plasti
49、c Backing Band)Tensile strength, min, psi 4000Elongation at break, min,% 100Tear resistance, min, psi 1500Water absorption, max, % 0.01Type B (Rubber Backing Band)Tensile strength, min, psi 1200Elongation at break, min, % 300Shore durometer hardness:min 60max 70Compression set, max, % of deflection 25Accelerated aging:Decrease in tensile strength, max, % oforiginal15Decrease in elongation, max, % of original 20Water absorption by weight, max, % 10Ozone resistance rating 06.3.2 The butyl rubber adhesive element shall have thefollowing phy
