1、Designation: C877M 16Standard Specification forExternal Sealing Bands for Concrete Pipe, Manholes, andPrecast Box Sections (Metric)1This standard is issued under the fixed designation C877M; the number immediately following the designation indicates the year oforiginal adoption or, in the case of re
2、vision, 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 external sealing bands to beused in conjunction with concrete pipe as de
3、fined in Terminol-ogy C822 and conforming to Specifications C14M, C76M,C412M, C478M, C506M, C507M, C655M, C985M, C1417M,and C1433M.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 specifi
4、cation is the metric counterpart of Specifi-cation C877.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 pressures up to 90 kPa,(9.14 m) without leakage. The am
5、ount 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. Referenced Documents2.1 ASTM Standards:2A167 Specific
6、ation for Stainless and Heat-ResistingChromium-Nickel Steel Plate, Sheet, and Strip (With-drawn 2014)3C14M Specification for Nonreinforced Concrete Sewer,Storm Drain, and Culvert Pipe (Metric)C76M Specification for Reinforced Concrete Culvert, StormDrain, and Sewer Pipe (Metric)C412M Specification f
7、or Concrete Drain Tile (Metric)C478M Specification for Circular Precast Reinforced Con-crete Manhole Sections (Metric)C506M Specification for Reinforced Concrete Arch Culvert,Storm Drain, and Sewer Pipe (Metric)C507M Specification for Reinforced Concrete EllipticalCulvert, Storm Drain, and Sewer Pip
8、e (Metric)C655M Specification for Reinforced Concrete D-LoadCulvert, Storm Drain, and Sewer Pipe (Metric)C681 Test Method for Volatility of Oil- and Resin-Based,Knife-Grade, Channel Glazing CompoundsC822 Terminology Relating to Concrete Pipe and RelatedProductsC985M Specification for Nonreinforced C
9、oncrete SpecifiedStrength Culvert, Storm Drain, and Sewer Pipe (Metric)C1417M Specification for Manufacture of Reinforced Con-crete Sewer, Storm Drain, and Culvert Pipe for DirectDesign (Metric)C1433M Specification for Precast Reinforced ConcreteMonolithic Box Sections for Culverts, Storm Drains, an
10、dSewers (Metric)D36 Test Method for Softening Point of 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 Rubb
11、er PropertyEffect of LiquidsD570 Test Method for Water 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 Tes
12、t Method for Peel or Stripping Strength of Adhe-sive BondsD1171 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 1
13、992)31This 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 Dec. 15, 2016. Published January 2017. Originallyapproved in 1980. Last previous edition
14、approved in 2009 as C877M 02 (2009).DOI: 10.1520/C0877M-16.2For 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.3T
15、he last approved version of this historical standard is referenced 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 sta
16、ndardization established in the Decision on Principles for theDevelopment 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 Ma
17、terials at 25/25C(Withdrawn 2004)3D2202 Test Method for Slump of 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. Terminology
18、3.1 DefinitionsFor definitions of terms relating to concretepipe, 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 wheth
19、er 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 Bands:5.1.1 Sealing bands shall be composed of rubber, mastic,and protective film elements as schematically shown in Fig. 1and with di
20、mensions 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 stretched longitudinally 8 to 12 % as part of theinstallation procedure, the sealing band will encircle theoutside perimeter of the pipe
21、 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 Width of Sealing BandThe width of the sealingband shall conform to the requirements of Table 1.5.1.2 Rubber ElementThe rubber element
22、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 porosity, blisters, pitting, andother imperfections. The basic polymer shall be natural,synthetic, or a blend of both and shall meet the phy
23、sicalrequirements prescribed in Section 6. The rubber element shallhave ribs with a height of 4.8 mm, spaced 19 to 32 mm 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
24、mastic element shall containrubber, reclaimed rubber and asphaltic derivatives, clay, and/orresin and shall meet the physical 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 Pro
25、tective FilmThe protective film shall be watersoluble, have a 0.025-mm thickness, and meet the physicalrequirements 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 installa
26、tion and expose the mastic for sealing.5.2 Type II Plastic 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.
27、1 Length of Sealing Band for a Given Pipe SizeThelength of the sealing band shall be equal to the outsideperimeter of the 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 plas
28、tic film element shallbe an extended polymer which provides external reinforcementand shall meet the physical requirements 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 Sectio
29、n 6.5.2.4 Rubberized Asphalt Mastic ElementThe rubberized,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 of 15 mm and a minimumthickness of 0.50
30、 mm and shall conform to SpecificationD3953. Steel straps 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, mmSealing
31、BandWidth, mm450 to 825 180900 to 1950 2302100 to 2700 2802850 to 3600 330FIG. 2 Sealing Band Type II (Not to Scale)C877M 1625.2.6 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 slidi
32、ngfreely. The sleeve shall be made from woven or non-wovenpolypropylene fabric with nominal mass of 0.12 kg/m2.5.2.7 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
33、Bands:Type A (Plastic backing band)Type B (Rubber backing 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.P
34、urchaser specified clamping devices or tie straps are 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 ma
35、terial used to provide for overlap.This requirement will 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 (Pl
36、astic Backing Band)The plastic backingband element shall be 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 requireme
37、nts prescribed in Section 6.5.3.3 Butyl Rubber Adhesive ElementThe 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 (Pla
38、stic Backing Band) 0.75-mmType B (Rubber Backing Band) 0.75-mm5.3.4 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 th
39、at theentire 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 specificationD3953. Steel straps shall be secured around the pipe withappropriate str
40、apping 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 A167.5.3.7 Optional Release ElementThe optio
41、nal 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 with 8
42、.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, % 10Ozone res
43、istance 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 physical p
44、roperties 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 3006.1.3 The protective film element shall have a maximumwater solubility of 60 s/0.020 mm of thickness when tested inaccordance with
45、8.1.3.6.2 Type II Plastic Film and Mesh Reinforced MasticBands:FIG. 3 Sealing Band Type III (Not to Scale)TABLE 2 Required Sealing Band Width (Type III)Equivalent Circular PipeDiameter, mmMinimum Sealing BandWidth,mm300-900 152901-2000 2292001 and larger 305C877M 1636.2.1 The plastic film element sh
46、all 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 in accorda
47、nce 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 gravity 0
48、.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 Backing Band
49、)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 25Accelerated 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 whe
copyright@ 2008-2019 麦多课文库（www.mydoc123.com）网站版权所有
备案/许可证编号：苏ICP备17064731号-1