1、Designation: A849 10Standard Specification forPost-Applied Coatings, Pavings, and Linings for CorrugatedSteel Sewer and Drainage Pipe1This standard is issued under the fixed designation A849; the number immediately following the designation indicates the year oforiginal adoption or, in the case of r
2、evision, 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.This standard has been approved for use by agencies of the Department of Defense.1. Scope*1.1 This specificat
3、ion covers post-applied coatings, pavings,and linings for corrugated steel pipe and corrugated steelstructural plate pipe, pipe-arches, and arches coated, paved, orlined with specified materials over either metallic coatings ormetallic coatings with polymer coatings. This specificationincludes aspha
4、lt, polymerized asphalt, polymer, mastic, andemulsion coatings and asphalt and concrete pavements andlinings applied to the pipe in the producing plant, as well as,asphalt and mastic coatings applied in the field. Field-appliedconcrete pavements and linings are covered by SpecificationA979/A979M. Th
5、e pipe to which the coatings are applied isdescribed in Specifications A760/A760M, A761/A761M, andA762/A762M.1.2 There is no cleaning operation currently included in pipecoating practice. However, experience has shown that a cleansubstrate provides good adherence for both cold- and hot-applied post
6、coatings. The performance of post coating orlining, or both, will depend on the surface cleanliness overwhich it is applied.1.3 The values stated in inch-pound units are to be regardedas standard. The values given in brackets are for informationonly.1.4 The following safety hazards caveat pertains o
7、nly to thetest methods portions, Sections 11 and 12, of this specification.This standard does not purport to address all of the safetyconcerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety andhealth practices and determine the
8、applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A185/A185M Specification for Steel Welded Wire Rein-forcement, Plain, for ConcreteA615/A615M Specification for Deformed and PlainCarbon-Steel Bars for Concrete ReinforcementA742/A742M Specification for Ste
9、el Sheet, MetallicCoated and Polymer Precoated for Corrugated Steel PipeA760/A760M Specification for Corrugated Steel Pipe,Metallic-Coated for Sewers and DrainsA761/A761M Specification for Corrugated Steel StructuralPlate, Zinc-Coated, for Field-Bolted Pipe, Pipe-Arches,and ArchesA762/A762M Specific
10、ation for Corrugated Steel Pipe,Polymer Precoated for Sewers and DrainsA862/A862M Practice for Application of Asphalt Coatingsto Corrugated Steel Sewer and Drainage PipeA926 Test Method for Comparing the Abrasion Resistanceof Coating Materials for Corrugated Metal PipeA979/A979M Specification for Co
11、ncrete Pavements andLinings Installed in Corrugated Steel Structures in theFieldC31/C31M Practice for Making and Curing Concrete TestSpecimens in the FieldC33 Specification for Concrete AggregatesC39/C39M Test Method for Compressive Strength of Cy-lindrical Concrete SpecimensC150 Specification for P
12、ortland CementC309 Specification for Liquid Membrane-Forming Com-pounds for Curing ConcreteC595 Specification for Blended Hydraulic CementsC618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteC670 Practice for Preparing Precision and Bias Statementsfor Test Meth
13、ods for Construction Materials1This specification is under the jurisdiction of ASTM Committee A05 onMetallic-Coated Iron and Steel Products and is the direct responsibility ofSubcommittee A05.17 on Corrugated Steel Pipe Specifications.Current edition approved Dec. 1, 2010. Published January 2011. Or
14、iginallyapproved in 1985. Last previous edition approved in 2005 asA849 - 00(2005). DOI:10.1520/A0849-10.2For 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 standar
15、ds Document Summary page onthe ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.D5 Test Method for Penetration of Bituminous MaterialsD6 Test Method for Lo
16、ss on Heating of Oil and AsphalticCompoundsD36 Test Method for Softening Point of Bitumen (Ring-and-Ball Apparatus)D70 Test Method for Density of Semi-Solid BituminousMaterials (Pycnometer Method)D92 Test Method for Flash and Fire Points by ClevelandOpen Cup TesterD1005 Test Method for Measurement o
17、f Dry-Film Thick-ness of Organic Coatings Using MicrometersD1187 Specification forAsphalt-Base Emulsions for Use asProtective Coatings for MetalD2042 Test Method for Solubility of Asphalt Materials inTrichloroethyleneD4402 Test Method for Viscosity Determination of Asphaltat Elevated Temperatures Us
18、ing a Rotational Viscometer3. Terminology3.1 Definitions:3.1.1 fabricator, nrefers to the producer of the pipe whogenerally applies the post coatings, pavings, and linings, exceptfor those pipes that are coated in the field.3.1.2 lining, nfor corrugated metal pipe, a layer ofnonmetallic material app
19、lied to the interior of a fabricated pipe,of sufficient thickness to fill and cover the corrugations.3.1.3 manufacturer, nrefers to the producer of the sheet.3.1.4 paving, nfor corrugated metal pipe, a lining appliedonly to a portion of the interior circumference, usually thelower portion as install
20、ed.3.1.5 post coating, nfor corrugated metal pipe, a layer ofnonmetallic material applied to the interior or exterior surfaceof the pipe, or both, after fabrication of the pipe.3.1.6 DiscussionCoating is generally used to refer to alayer or layers of material applied to the base metal in sheetform p
21、rior to fabrication into pipe. Post coating applies to alayer of nonmetallic material applied after fabrication intopipe. Where the context is clear, coating may be used in placeof post coating.3.1.7 purchaser, nrefers to the purchaser of the finishedproduct.4. Significance and Use4.1 Post-applied c
22、oatings, linings, and pavements are usedto improve hydraulic characteristics, corrosion resistance, orabrasion resistance, or a combination thereof. Generally, coat-ings improve corrosion resistance and are especially effectiveon the outside (soil side) of the pipe. While coatings improveabrasion re
23、sistance to varying degrees, pavements generallyare used where abrasion is a significant consideration. Pave-ments improve abrasion resistance, protect the metallic andother coatings, and increase corrosion resistance. Smoothpavements, even though they typically cover only the invert ofthe pipe, imp
24、rove hydraulic flow characteristics. Full liningsand pavements, generally, provide all three benefits.4.2 Applications:4.2.1 Asphalt, polymer-modified asphalt, and polymer pro-vide excellent corrosion resistance to the outside (soil side) ofthe pipe. These materials provide varying degrees of intern
25、al(water side) corrosion protection depending on the severity ofabrasive flow conditions. Polymer-modified asphalt and poly-mer coatings provide longer-term protection than asphalt inmore abrasive conditions.4.2.2 Asphalt pavements are used for abrasive conditions.Where conditions involve repeated h
26、igh flow velocities movinga heavy bed load of gravel or rocks, or both, concretepavements are appropriate (see Specification A979/A979M).4.2.3 Full asphalt linings enhance hydraulics while provid-ing a completely “paved” interior. Full concrete linings arehigh-strength concrete that provides a linin
27、g similar in thick-ness to asphalt linings. They enhance hydraulic performanceand offer abrasion protection, which is not as effective as theabrasion protection offered by a thicker concrete pavement.5. Classification5.1 The post-applied coatings, pavings, and linings aredescribed in this section as
28、 a two-step classification procedure.The first classification is the type of coating, paving, or liningmaterial to be used, for example, hot-applied asphalt, concrete,cold-applied mastic, cold-applied emulsion, polymer, or com-bination thereof. The second is a coating, paving, and liningtype giving
29、the physical location of the coating or lining on thepipe (see Table 1).5.2 Material Classes:5.2.1 Class AAsphalt,5.2.2 Class PAPolymer modified asphalt, hot applied,5.2.3 Class CConcrete,5.2.4 Class MMastic, either asphalt base or tar base, coldapplied,5.2.5 Class PPolymer, and5.2.6 Class EAsphalti
30、c emulsion.5.3 Coating, Paving, and Lining Types:5.3.1 Fully CoatedA uniform coating applied to theinterior and exterior of the pipe.5.3.2 Half CoatedA uniform coating applied to the inte-rior and exterior of the pipe covering at least 50 % of thecircumference on the lower portion of the pipe as ins
31、talled.5.3.3 Exterior CoatedA uniform coating applied to theexterior of the pipe.5.3.4 Interior CoatedA uniform coating applied to theinterior of the pipe .5.3.5 Invert CoatingA uniform coating on the lowerportion of the interior of the pipe as installed (the invert) toprovide abrasion and corrosion
32、 resistance without filling thecorrugations.TABLE 1 Location and Material ClassPhysicalLocationAAsphalt,Hot-AppliedPAPolymerizedAsphalt,Hot-AppliedCConcreteM/ECold-AppliedAPPolymerInterior-coated M/E PExterior-coated M/E PFully-coated A PA M/E PHalf-coated A PA M/E PFully-lined A C Invert-paved A PA
33、 C PInvert-coated PA PAMay be plant or field applied.A849 1025.3.6 Invert PavedA paving on the lower portion of theinterior of the pipe as installed (the invert) to provide anabrasion-resistant smooth flow line.5.3.7 Fully LinedA lining filling the corrugations on thefull interior of the pipe to pro
34、vide a smooth interior.6. Ordering Information6.1 The pipe to be coated shall be described as to theapplicable standard (Specification A760/A760M, A761/A761M,orA762/A762M), including all detailed orderingprovisions of that specification.6.2 Orders for pipe coatings to this specification shallinclude
35、 the following information as necessary to adequatelydescribe the desired product,6.2.1 Class of material,6.2.2 Type of coating, paving, or lining,6.2.3 If post coating is to be applied in the plant or in thefield (Note 1).NOTE 1Class M (mastic) and Class E (emulsions) coatings aresuitable for eithe
36、r plant application or field application.6.2.4 For Class M, whether asphalt base or tar base material,6.2.5 For concrete invert paved material Class C, amount ofreinforcement (see 7.2.2.5),6.2.6 ASTM designation and year of issue,6.2.7 Certification, if required, on the post coating, and,6.2.8 Any s
37、pecial requirements.7. Material Requirements7.1 Material Class A (Asphalt Material)The asphalt ma-terial shall be applied in accordance with Practice A862/A862M and shall meet the following requirements as appliedto a pipe:7.1.1 Softening Point200F 93C min.7.1.2 Penetration (Original Material)35 to
38、65 dmm.7.1.3 Penetration (Residue from Loss on Heating)85 % oforiginal penetration, min.7.1.4 Flash Point450F 232C min.7.1.5 Solubility99 % min.7.1.6 Specific Gravity0.98 min at 77F 25C.7.1.7 Loss on Heating1 % max.7.1.8 ShockThe asphalt shall be considered acceptable ifnot more than one of the four
39、 test specimens shows a crack.Test as described in 11.2.7.1.9 FlowThe asphalt shall be considered acceptable ifthe flow does not exceed38 in. 9.5 mm for either of the twotest specimens. Test as described in 11.3.7.1.10 ImperviousnessThere shall not be any loosening orseparation of the asphalt coatin
40、g from the substrate at the endof 48 h when tested as described in 11.4.7.2 Material Class C (Concrete Material)Full concretelinings shall meet the requirements of 7.2.1. Concrete pavedinverts shall meet the requirements of 7.2.2.7.2.1 Concrete LiningsFull concrete linings shall cover100 % of the pi
41、pe circumference. Linings shall be placed by amachine that, in one or more passes, completely fills thecorrugation and provides a minimum18 in. 3.2 mm concretethickness over the corrugation crests. Hand placement methodsare acceptable for lining fittings and elbows when machineplacement is not pract
42、ical and the above results are achieved.The lining shall conform to the shape of the pipe and have atroweled surface finish meeting the requirements of 9.1.2.1.7.2.1.1 The concrete shall be composed of cement, fly ash(when used), fine aggregates, and water that are well mixed andof such consistency
43、as to produce a dense, homogeneous,nonsegregated lining. In no case shall the proportions ofportland cement, blended cement, or portland cement pluspozzolanic material in the mixture be less than 470 lb/yd3279kg/m3 of concrete. The concrete mix shall provide a minimumseven day compressive strength o
44、f 5000 psi 34.5 MPa whentested in accordance with Practice C31/C31M and Test MethodC39/C39M. Concrete linings shall be cured to meet therequirements of 7.2.3. All concrete shall have a water-cementratio not exceeding 0.50 by weight.7.2.1.2 CementCement shall conform to the requirementsof Specificati
45、on C150, Type I or II or Specification C595, TypeIP. When Type IPcement is used, no fly ash shall be used in themix.7.2.1.3 Fly AshFly ash shall conform to the requirementsof Specification C618, Class F or Class C. When fly ash isused, it shall not exceed 20 % by weight of the total cementi-tious ma
46、terials in the mix.7.2.1.4 AggregatesAggregates shall conform to the re-quirements of Specification C33 except that the requirementfor gradation and uniformity of gradation shall not apply. Theaggregate shall be well graded with 100 % passing the No. 161.18 mm sieve with no more than 5 % passing the
47、 No. 100150 m sieve.7.2.1.5 Only potable water shall be used.7.2.2 Concrete PavementsSpecial pavement designs thatmeet or exceed the requirements of this specification shall befully detailed in the purchase documents. In lieu of a specialdesign, pavements shall cover the bottom 25 % of a roundpipes
48、circumference and the 40 % of the circumference of apipe arch that constitutes the invert. Pavements shall conformto the shape of the pipe and have either a screeded or troweledsurface finish as specified in the purchase documents. Thetroweled finish shall meet the requirements of 9.1.2.1.7.2.2.1 Th
49、e pavement shall provide a minimum 3 in. 76.2mm thickness over the corrugation crests, when concrete witha minimum 28-day compressive strength of 3250 psi 22.4MPa is used. Alternatively, the pavement shall provide aminimum 112 in. 38.1 mm thickness over the corrugationcrests, when concrete with a minimum 28-day compressivestrength of 9600 psi 66.2 MPa is used. Concrete compressivestrength shall be determined in accordance with PracticeC31/C31M and Test Method C39/C39M. All concrete
