1、Designation: C 877M 02e1METRICStandard Specification forExternal Sealing Bands for Concrete Pipe, Manholes, andPrecast Box Sections Metric1This standard is issued under the fixed designation C 877M; the number immediately following the designation indicates the year oforiginal adoption or, in the ca
2、se of revision, 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 ex
3、ternal sealing bands to beused in conjunction with concrete pipe as defined in Terminol-ogy C 822 and conforming to Specifications C 14M, C 76M,C 412M, C 478M, C 506M, C 507M, C 655M, C 985M,C 1417M, and C 1433M.1.1.1 Type I, Rubber and Mastic Bands.1.1.2 Type II, Plastic Film and Mesh Reinforced Ma
4、sticBands.1.1.3 Type III, Chemically Bonded Adhesive Butyl Bands.1.2 This specification is the metric counterpart of Specifi-cation C 877.NOTE 1This specification covers only the design and material of thesealing bands. Sealing bands covered by this specification are adequate,when properly installed
5、, for external hydrostatic pressures up to 90 kPa,(9.14 m) 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 covere
6、d by other specifications.2. Referenced Documents2.1 ASTM Standards:2A 167 Specification for Stainless and Heat-ResistingChromium-Nickel Steel Plate, Sheet, and StripC 14M Specification for Concrete Sewer, Storm Drain, andCulvert Pipe MetricC 76M Specification for Reinforced Concrete Culvert,Storm D
7、rain, and Sewer Pipe MetricC 412M Specification for Concrete Drain Tile MetricC 478M Specification for Precast Reinforced ConcreteManhole Sections MetricC 506M Specification for Reinforced Concrete Arch Cul-vert, Storm Drain, and Sewer Pipe MetricC 507M Specification for Reinforced Concrete Elliptic
8、alCulvert, Storm Drain, and Sewer Pipe MetricC 655M Specification for Reinforced Concrete D-LoadCulvert, Storm Drain, and Sewer Pipe MetricC 681 Test Method for Volatility of Oil- and Resin-Based,Knife-Grade, Channel Glazing CompoundsC 766 Test Method forAdhesionAfter Impact of PreformedTape Sealant
9、s3C 822 Terminology Relating to Concrete Pipe and RelatedProductsC 985M Specification for Nonreinforced Concrete Speci-fied Strength Culvert, Storm Drain, and Sewer Pipe Met-ricC 1417M Specification for Manufacture of Reinforced Con-crete Sewer, Storm Drain, and Culvert Pipe for DirectDesign MetricC
10、 1433M Specification for Precast Reinforced ConcreteBox Sections for Culverts, Storm Drains, and SewersMetricD36 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 T
11、est Methods for Vulcanized Rubber 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 an
12、d Thermoplastic Elastomers1This specification is under the jurisdiction of ASTM Committee C13 onConcrete Pipe and is the direct responsibility of Subcommittee C13.08 on Joints forPrecast Concrete Structures.Current edition approved April 10, 2002. Published June 2002. Originallypublished as C 877M80
13、. Last previous edition C 877M01.2For 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.3Withdrawn.1Copyright ASTM I
14、nternational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.D 882 Test Method for Tensile Properties of Thin PlasticSheetingD 1171 Test Method for Rubber DeteriorationSurfaceOzone Cracking Outdoors or Chamber (Triangular Speci-mens)D 1278 Test Methods for Rubber
15、 from Natural SourcesChemical AnalysisD 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 PropertyDuromete
16、rHardnessD 3407 Test Methods of Testing for Joint Sealants, Hot-Poured, for Concrete 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 acc
17、eptability 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 design and freedom from defects.5. Materials and Manufacture f
18、or 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 BandFor a given pipe size, thelength of the sealing band
19、 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 of the sealing band. Sealingbands may be furnished in th
20、e 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 andshall be cured in such a manner that any cross section
21、 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 shallhave ribs with a height of 4.8 mm, spaced 19 to 32 mm
22、 apart,and have a thickness between the ribs of 1.6 mm. The thicknessof the ribs is not prohibited from varying from 3.2 mm at thebase to 0.8 mm at the top.5.1.3 Mastic ElementThe mastic element shall containrubber, reclaimed rubber and asphaltic derivatives, clay, and/orresin and shall meet the phy
23、sical requirements prescribed inSection 6. The mastic element shall have a thickness of 3.2 mmand be free of porous areas, air pockets, and contamination byforeign matter.5.1.4 Protective FilmThe protective film shall be watersoluble, have a 0.025-mm thickness, and meet the physicalrequirements pres
24、cribed 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 Plastic Film and Mesh Reinforced Mastic Bands:5.2.1 Sealing bands sha
25、ll 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 of the sealing band shall be equal to the outsideperimeter of t
26、he joint plus 200 mm 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 provides external reinforcementand shall meet the physical requireme
27、nts prescribed in Section6.5.2.3 Mesh Reinforcement ElementThe 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 compositiona
28、nd shall meet the requirements prescribed in Section 6.FIG. 1 Sealing Band Type I Schematic (Not to Scale)TABLE 1 Required Sealing Band WidthEquivalent Circular PipeDiameter, mmSealing BandWidth, mm450 to 825 180900 to 1950 2302100 to 2700 2802850 to 3600 330FIG. 2 Sealing Band Type II (Not to Scale
29、)C877M02e125.2.5 Tie Strap ElementThe tie strap element shall besteel straps with a minimum width of 15 mm and a minimumthickness of 0.50 mm and shall conform to SpecificationD 3953. Steel straps shall be secured around the pipe withappropriate strapping tools as recommended by the sealingband manuf
30、acturer.5.2.6 Tie Strap Sleeve ElementThe tie strap sleeve ele-ment shall consist of a minimum of 25 mm wide flat sleeveinside which the steel tie straps are not prohibited from slidingfreely. The sleeve shall be made from woven or non-wovenpolypropylene fabric with nominal mass of 0.12 kg/m2.5.2.7
31、Release Sheet ElementThe disposable release sheetelement shall consist of a silicone coated paper with aminimum basis mass of 0.1 kg/m2.5.3 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 pr
32、imer5.3.1 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 notpr
33、ohibited 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 will al
34、low 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 shall be
35、 made from high density polyethyleneplastic, conforming to the physical requirements prescribed inSection 6.5.3.2.2 Type B (Rubber Backing Band)The rubber used inthe rubber backing band element shall conform to the physicalproperty requirements prescribed in Section 6.5.3.3 Butyl Rubber Adhesive Ele
36、mentThe 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) 0.75-mmType B (Rubber Backing Band) 0.75
37、-mm5.3.4 Primer ElementThe primer element shall 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 ensur
38、e thatthe entire band area will contact only primed surfaces.5.3.5 Optional Tie StrapThe optional tie strap elementshall be steel straps with a minimum width of 16 mm and aminimum thickness of 5 mm and shall conform to specificationD 3953. Steel straps shall be secured around the pipe withappropriat
39、e strapping tools as recommended by the sealingband manufacturer.5.3.6 Optional Clamping DevicesOptional clamping de-vices shall be constructed of corrosion resistant materialmeeting the physical properties and chemical compositionrequirements of Specification A 167.5.3.7 Optional Release ElementThe
40、 optional release ele-ment shall consist of coated paper or plastic that has demon-strated its suitability for this use.6. Physical Requirements for Sealing Band Elements6.1 Type I Rubber and Mastic Bands:6.1.1 The rubber element shall have the following physicalproperties when tested in accordance
41、with 8.1.1:Tensile strength, min, MPa 8.27Elongation at break, min, % 300Shore durometer hardness:MinMax6070Compression set, max, % of deflection 25Accelerated aging:Decrease in tensile strength, max, % oforiginal15Decrease in elongation, max, % of original 20Water absorption by weight, max, % 10Ozo
42、ne resistance rating 06.1.2 The mastic element shall be capable of flowing, withinthe confines of the sealing band, to fill joint surface imperfec-tions against which the sealing band is placed and shall have nodeleterious effect on the rubber element. The mastic elementshall have the following phys
43、ical properties when tested inaccordance with 8.1.2:Minimum MaximumAsh-inert matter 10 % 25 %Volatiles 5 % 10 %Specific gravity 1.20 1.35Slump 0.3 mm 0.9 mmPenetration 200 300FIG. 3 Sealing Band Type III (Not to Scale)TABLE 2 Required Sealing Band Width (Type III)Equivalent Circular PipeDiameter, mm
44、Minimum Sealing Band Width,mm300-900 152901-2000 2292001 and larger 305C877M02e136.1.3 The protective film element shall have a maximumwater solubility of 60 s/0.020 mm of thickness when tested inaccordance with 8.1.3.6.2 Type II Plastic Film and Mesh Reinforced Mastic Bands:6.2.1 The plastic film e
45、lement shall have the followingphysical properties when tested in accordance with 8.2.1:Tensile strength, min, MPa 27.6Elongation at break, min,% 100Tear resistance, min, MPa 10.4Water absorption, max, % 0.016.2.2 The reinforcing mesh element shall have the followingphysical properties when tested i
46、n accordance with 8.2.2:Tensile strength, min, N/mmwarp 13fill 13Elongation 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
47、gravity 0.95 1.05Softening temperature, min, C 79.4 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 (Plastic Bac
48、king Band)Tensile strength, min, MPa 27.6Elongation at break, min, % 100Tear resistance, min, MPa 10.4Water absorption, max, % 0.01Type B (Rubber Backing Band)Tensile strength, min, MPa 8.27Elongation at break, min, % 300Shore durometer hardness:min 60max 70Compression set, max, % of deflection 25Ac
49、celerated aging:Decrease in tensile strength, max, % of original 15Decrease 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,% 30 50Volatiles, % 0.1 2Specific gravity 1.15 1.50Adhesion after impact, % 50 100Penetration at 25C, dmm 50 1007. Permissible Variations in Dimensions7.1 Type I, Rubber and Mastic Bands:7.1.1 The thickness of th
