1、Designation: C 877 02e1Standard Specification forExternal Sealing Bands for Concrete Pipe, Manholes, andPrecast Box Sections1This standard is issued under the fixed designation C 877; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision,
2、 the 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.e1NOTEEditorial corrections were made to 5.1.3 in March 2005.1. Scope1.1 This specification covers external sealing
3、bands to beused in conjunction with concrete pipe as defined in Terminol-ogy C 822 and conforming to Specifications C14, C76, C 412,C 478, C 506, C 507, C 655, C 985, C 1417, and C 1433.1.1.1 Type I, Rubber and Mastic Bands.1.1.2 Type II, Plastic Film and Mesh Reinforced MasticBands.1.1.3 Type III,
4、Chemically-Bonded Adhesive Butyl Bands.1.2 A complete metric companion to Specification C 877has been developedC 877M; therefore, no metric equivalentsare presented in this specification.NOTE 1This specification covers only the design and material of thesealing bands. Sealing bands covered by this s
5、pecification are adequate,when properly installed, for external hydrostatic pressures 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
6、 the installed pipelineand system must be covered by other specifications.2. Referenced Documents2.1 ASTM Standards:2A 167 Specification for Stainless and Heat-ResistingChromium-Nickel Steel Plate, Sheet, and StripC14 Specification for Concrete Sewer, Storm Drain, andCulvert PipeC76 Specification fo
7、r Reinforced Concrete Culvert, StormDrain, and Sewer PipeC 412 Specification for Concrete Drain TileC 478 Specification for Precast Reinforced Concrete Man-hole SectionsC 506 Specification for Reinforced Concrete Arch Culvert,Storm Drain, and Sewer PipeC 507 Specification for Reinforced Concrete Ell
8、iptical Cul-vert, Storm Drain, and Sewer PipeC 655 Specification for Reinforced Concrete D-Load Cul-vert, Storm Drain, and Sewer PipeC 681 Test Method for Volatility of Oil- and Resin-Based,Knife-Grade, Channel Glazing CompoundsC 766 Test Method forAdhesionAfter Impact of PreformedTape Sealants3C 82
9、2 Terminology Relating to Concrete Pipe and RelatedProductsC 985 Specification for Nonreinforced Concrete SpecifiedStrength Culvert, Storm Drain, and Sewer PipeC 1417 Specification for Manufacture of Reinforced Con-crete Sewer, Storm Drain, and Culvert Pipe for DirectDesignC 1433 Specification for P
10、recast Reinforced Concrete BoxSections for Culverts, Storm Drains, and SewersD36 Test Method for Softening Point of Bitumen (Ring-and-Ball Apparatus)D 217 Test Methods for Cone Penetration of LubricatingGreaseD 395 Test Methods for Rubber PropertyCompressionSetD 412 Test Methods for Vulcanized Rubbe
11、r and Thermo-plastic ElastomersTensionD 471 Test Method for Rubber PropertyEffect of LiquidsD 570 Test Method for Water Absorption of PlasticsD 573 Test Method for RubberDeterioration in an AirOvenD 624 Test Method for Tear Strength of ConventionalVulcanized Rubber and Thermoplastic ElastomersD 882
12、Test Method for Tensile Properties of Thin PlasticSheetingD 1171 Test Method for Rubber DeteriorationSurfaceOzone Cracking Outdoors or Chamber (Triangular Speci-mens)1This specification is under the jurisdiction of ASTM Committee C13 onConcrete Pipe and is the direct responsibility of Subcommittee C
13、13.08 on Joints forPrecast Concrete Structures.Current edition approved April 10, 2002. Published June 2002. Originallypublished as C 87777. Last previous edition C 87701.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Ann
14、ual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.D 1278 Test Methods for Rubber from Natural SourcesChemical Anal
15、ysisD 1682 Test Methods for Breaking Load and Elongation ofTextile Fabrics3D 1963 Test Method for Specific Gravity of Drying Oils,Varnishes, Resins, and Related Materials at 25/25CD 2202 Test Method for Slump of SealantsD 2240 Test Method for Rubber PropertyDurometerHardnessD 3407 Test Methods for J
16、oint Sealants, Hot-Poured, forConcrete and Asphalt Pavements3D 3953 Specification for Strapping, Flat Steel and Seals3. Terminology3.1 DefinitionsFor definitions of terms relating to con-crete pipe, see Terminology C 822.4. Basis of Acceptance4.1 The acceptability of the sealing bands shall be deter
17、-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 design and freedom from defects.5. Materials and Manufacture for Sealing Bands5.1 Type I, Rubber and Mastic
18、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 BandFor a given pipe size, thelength of the sealing band as furnished shall be such that afterbeing st
19、retched 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 of the sealing band. Sealingbands may be furnished in the required length or multiplesthereof.5.1.1.2
20、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 andshall be cured in such a manner that any cross section will bedense, homogeneous, and free of porosi
21、ty, 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 shallhave ribs with a height of316 in., spaced34 to 114 in. apart,and have a thickness between the ribs
22、of116 in. The thicknessof the ribs is not prohibited from varying from18 in. at thebase to132 in. at the top.5.1.3 Mastic ElementThe mastic element shall containrubber, reclaimed rubber and asphaltic derivatives, clay, and/orresin and shall meet the physical requirements prescribed inSection 6. The
23、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-mil (0.001 in.) thickness, and meet thephysical requirements prescribed in Section 6.NOTE 2The function
24、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 Plastic Film and Mesh Reinforced Mastic Bands:5.2.1 Sealing bands shall be composed of a plastic film,reinfo
25、rced, 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 of the sealing band shall be equal to the outsideperimeter of the joint plus 8 in. to provide for ove
26、rlap.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 provides external reinforcementand shall meet the physical requirements prescribed in Section6.5.2.3 Mesh R
27、einforcement 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 rubberized,asphalt, mastic element shall be a self adhering compositionand shall meet the requirements prescr
28、ibed in Section 6.5.2.5 Tie Strap ElementThe tie strap element shall besteel straps with a minimum width of58 in. and a minimumthickness of 0.020 in. and shall conform to SpecificationD 3953. Steel straps shall be secured around the pipe withappropriate strapping tools as recommended by the sealingb
29、and 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 to 144 13FIG. 2 Sealing Band Type II (Not to Scale)C87702e125.2.6 Tie Strap Sleeve ElementThe tie str
30、ap 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-pylene fabric with nominal weight of 3.5 oz/yd2.5.2.7 Release Sheet ElementThe disposable release s
31、heetelement 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 backing band)A semi-liquid paintable butyl rubber-based adhesive primer5.3.1 Sealing bands shall be compo
32、sed 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 notprohibited to be used with these sealin
33、g 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 shall allow the sealing bands to be appliedw
34、ithout 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 shall be made from high density polyethylene
35、plastic 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 butyl rubberadhesive element, conforming
36、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.5.3.4 Primer ElementThe primer element shall
37、 be asemi-liquid homogeneous mixture of butyl rubber and vehicle,conforming to the physical requirements prescribed in Section6, and shall be spread in a continuous film at the intersection ofthe joint. The application width shall be sufficient to ensure thatthe entire band area will contact only pr
38、imed surfaces.5.3.5 Optional 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 D 3953. Steel straps shall be secured around thepipe with appropriate strapping tools as recommended by
39、 thesealing band manufacturer.5.3.6 Optional Clamping DevicesOptional clamping de-vices shall be constructed of corrosion resistant materialsmeeting the physical properties and chemical compositionrequirements of Specification A 167.5.3.7 Optional Release ElementThe optional release ele-ment shall c
40、onsist of coated paper 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,
41、% 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 0FIG. 3 Sealing Band Type III (Not to Scale)T
42、ABLE 2 Required Sealing Band Width (Type III)Equivalent Circular PipeDiameter, in.Minimum Sealing Band Width,in.12 to 33 636 to 78 984 and larger 12C87702e136.1.2 The mastic element shall be capable of flowing, withinthe confines of the sealing band, to fill joint surface imperfec-tions against whic
43、h the sealing band is placed and shall have nodeleterious 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 %Volatiles 5 % 10 %Specific gravity 1.20 1.35Slump 0.01 in. 0.03 in.Penet
44、ration 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 Mastic Bands:6.2.1 The plastic film element shall have the followingphysical properties when tested i
45、n 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 tested in accordance with 8.2.2:Tensile Strength, min, lb/in.warp 75fil
46、l 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 2.0Specific gravity 0.95 1.05Softening temperature, min., F 175 Penetrati
47、on, 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 (Plastic Backing Band)Tensile strength, min, psi 4000Elongation at break,
48、 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, % oforigina
49、l15Decrease in elongation, max, % of original 20Water absorption by weight, max, % 10Ozone resistance rating 06.3.2 The butyl rubber adhesive element shall have thefollowing physical properties when tested in accordance with8.3.3:Minimum MaximumAsh-inert matter, % 30 50Volatiles, % 0.1 2Specific gravity 1.15 1.50Adhesion after impact, % 50 100Penetration at 77F 50 1007. Permissible Variations in Dimensions7.1 Type I, Rubber and Mastic Bands:7.1.1 The thickness of the rubber element between the ribsshall be a minimum of116 in. and a maxim
