1、Designation: A 849 00 (Reapproved 2005)Standard Specification forPost-Applied Coatings, Pavings, and Linings for CorrugatedSteel Sewer and Drainage Pipe1This standard is issued under the fixed designation A 849; the number immediately following the designation indicates the year oforiginal adoption
2、or, in the case 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.This standard has been approved for use by agencies of the Department of Defense.1. Scop
3、e1.1 This specification 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 specifi
4、cationincludes asphalt, 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 Specifi
5、cationA 979/A 979M. The pipe to which the coatings are applied isdescribed in Specifications A 760/A 760M, A 761/A 761M,and A 762/A 762M.1.2 There is no cleaning operation currently included in pipecoating practice. However, experience has shown that a cleansubstrate provides good adherence for both
6、 cold- and hot-applied post 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 safe
7、ty hazards caveat pertains only 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
8、practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A 185 Specification for Steel Welded Wire, Fabric, Plain,for Concrete ReinforcementA 615/A 615M Specification for Deformed and PlainBillet-Steel Bars for Concrete ReinforcementA
9、 742/A 742M Specification for Steel Sheet, Metallic-Coated and Polymer Precoated for Corrugated Steel PipeA 760/A 760M Specification for Corrugated Steel Pipe,Metallic-Coated for Sewers and DrainsA 761/A 761M Specification for Corrugated Steel Struc-tural Plate, Zinc-Coated, for Field-Bolted Pipe, P
10、ipe-Arches, and ArchesA 762/A 762M Specification for Corrugated Steel Pipe,Polymer Precoated for Sewers and DrainsA 862 Practice for Application of Bituminous (Asphalt)Coatings to Corrugated Steel Sewer and Drainage PipeA 885/A 885M Specification for Steel Sheet, Zinc and Ara-mid Fiber Composite Coa
11、ted for Corrugated Steel Sewer,Culvert, and Underdrain PipeA 926 Test Method for Comparing the Abrasion Resistanceof Coating Materials for Corrugated Metal PipeA 979/A 979M Specification for Concrete Pavements andLinings Installed in Corrugated Steel Structures in theFieldC 31/C 31M Practice for Mak
12、ing and Curing Concrete TestSpecimens in the FieldC33 Specification for Concrete AggregatesC39 Test Method for Compressive Strength of CylindricalConcrete SpecimensC 150 Specification for Portland CementC 309 Specification for Liquid Membrane-Forming Com-pounds for Curing ConcreteC 595 Specification
13、s for Blended Hydraulic CementsC 618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use as a Mineral Admixture inPortland Cement ConcreteC 670 Practice for Preparing Precision and Bias Statementsfor Test Methods of Construction MaterialsD5 Test Method for Penetration of Bitum
14、inous MaterialsD6 Test Method for Loss on Heating of Oil and AsphalticCompoundsD36 Test Method for Softening Point of Bitumen (Ring-and-Ball Apparatus)1This specification is under the jurisdiction of ASTM Committee A05 onMetallic Coated Iron and Steel Products and is the direct responsibility ofSubc
15、ommittee A05.17 on Corrugated Steel Pipe Specifications.Current edition approved October 1, 2005. Published October 2005. Originallyapproved in 1985. Last previous edition approved in 2000 as A 849 - 00.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Ser
16、vice at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.D70 Test Method for Density of Semi-Solid B
17、ituminousMaterials (Pycnometer Method)D92 Test Methods for Flash and Fire Points by ClevelandOpen CupD 1005 Test Methods for Measurement of Dry-Film Thick-ness of Organic Coatings Using MicrometersD 1187 Specification for Asphalt-Base Emulsions for Useas Protective Coatings for MetalD 2042 Test Meth
18、od for Solubility of Asphalt Materials inTrichloroethyleneD 4402 Test Method for Viscosity Determinations of Un-filled Asphalts Using the Brookfield Thermosel Apparatus3. Terminology3.1 Definitions:3.1.1 fabricator, nrefers to the producer of the pipe whogenerally applies the post coatings, pavings,
19、 and linings, exceptfor those pipes that are coated in the field.3.1.2 lining, nfor corrugated metal pipe, a layer ofnonmetallic material applied 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
20、.1.4 paving, nfor corrugated metal pipe, a lining appliedonly to a portion of the interior circumference, usually thelower portion as installed.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 fabric
21、ation 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 prior to fabrication into pipe. Post coating applies to alayer of nonmetallic material applied after fabrication intopipe. Where the context is clear, coating m
22、ay be used in placeof post coating.3.1.7 purchaser, nrefers to the purchaser of the finishedproduct.4. Significance and Use4.1 Post-applied coatings, linings, and pavements are usedto improve hydraulic characteristics, corrosion resistance, orabrasion resistance, or a combination thereof. Generally,
23、 coat-ings improve corrosion resistance and are especially effectiveon the outside (soil side) of the pipe. While coatings improveabrasion resistance to varying degrees, pavements generallyare used where abrasion is a significant consideration. Pave-ments improve abrasion resistance, protect the met
24、allic andother coatings, and increase corrosion resistance. Smoothpavements, even though they typically cover only the invert ofthe pipe, improve hydraulic flow characteristics. Full liningsand pavements, generally, provide all three benefits.4.2 Applications:4.2.1 Asphalt, polymer-modified asphalt,
25、 and polymer pro-vide excellent corrosion resistance to the outside (soil side) ofthe pipe. These materials provide varying degrees of internal(water side) corrosion protection depending on the severity ofabrasive flow conditions. Polymer-modified asphalt and poly-mer coatings provide longer-term pr
26、otection than asphalt inmore abrasive conditions.4.2.2 Asphalt pavements are used for abrasive conditions.Where conditions involve repeated high flow velocities movinga heavy bed load of gravel or rocks, or both, concretepavements are appropriate (see Specification A 979/A 979M).4.2.3 Full asphalt l
27、inings enhance hydraulics while provid-ing a completely “paved” interior. Full concrete linings arehigh-strength concrete that provides a lining similar in thick-ness to asphalt linings. They enhance hydraulic performanceand offer abrasion protection, which is not as effective as theabrasion protect
28、ion offered by a thicker concrete pavement.5. Classification5.1 The post-applied coatings, pavings, and linings aredescribed in this section as a two-step classification procedure.The first classification is the type of coating, paving, or liningmaterial to be used, for example, hot-applied asphalt,
29、 concrete,cold-applied mastic, cold-applied emulsion, polymer, or com-bination thereof. The second is a coating, paving, and liningtype giving 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
30、 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 EAsphaltic 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 unifo
31、rm 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 installed.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
32、.3.5 Invert CoatingA uniform coating on the lowerportion of the interior of the pipe as installed (the invert) toprovide abrasion and corrosion resistance without filling thecorrugations.5.3.6 Invert PavedA paving on the lower portion of theinterior of the pipe as installed (the invert) to provide a
33、nabrasion-resistant smooth flow line.5.3.7 Fully LinedA lining filling the corrugations on thefull interior of the pipe to provide a smooth interior.TABLE 1 Location and Material ClassPhysicalLocationAAsphalt,Hot-AppliedPAPolymerizedAsphalt,Hot-AppliedCConcreteM/ECold-AppliedAPPolymerInterior-coated
34、 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 C PInvert-coated PA PAMay be plant or field applied.A 849 00 (2005)26. Ordering Information6.1 The pipe to be coated shall be described as to theapplicable standard (Specification A 760/A 760M,
35、A 761/A 761M,orA 762/A 762M), including all detailed orderingprovisions of that specification.6.2 Orders for pipe coatings to this specification shallinclude the following information as necessary to adequatelydescribe the desired product,6.2.1 Class of material,6.2.2 Type of coating, paving, or lin
36、ing,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 either 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
37、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 special requirements.7. Material Requirements7.1 Material Class A (Asphalt Material)The asphalt ma-terial shall be applied in accordance with Pr
38、actice A 862 andshall meet the following requirements as applied to a pipe:7.1.1 Softening Point200F 93C min.7.1.2 Penetration (Original Material)35 to 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.
39、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 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
40、 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 coating 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
41、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 pipe circumference. Linings shall be placed by amachine that, in one or more passes, completely fills thecorrugation and provides a minimum18 in. 3.2
42、mm concretethickness over the corrugation crests. Hand placement methodsare acceptable for lining fittings and elbows when machineplacement is not practical and the above results are achieved.The lining shall conform to the shape of the pipe and have atroweled surface finish meeting the requirements
43、 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 as to produce a dense, homogeneous,nonsegregated lining. In no case shall the proportions ofportland cement, blended cement, or portland cement plus
44、pozzolanic material in the mixture be less than 470 lb/yd3279kg/m3 of concrete. The concrete mix shall provide a minimumseven day compressive strength of 5000 psi 34.5 MPa whentested in accordance with Practice C 31/C 31M and TestMethod C39. Concrete linings shall be cured to meet therequirements of
45、 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 Specification C 150, Type I or II or Specification C 595,Type IP. When Type IP cement is used, no fly ash shall be usedin the mix.7.2.1.3 Fly AshFly ash shall con
46、form to the requirementsof Specification C 618, Class F or Class C. When fly ash isused, it shall not exceed 20 % by weight of the total cementi-tious materials in the mix.7.2.1.4 AggregatesAggregates shall conform to the re-quirements of Specification C33except that the requirementfor gradation and
47、 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 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
48、 this specification shall befully detailed in the purchase documents. In lieu of a specialdesign, pavements shall cover the bottom 25 % of a roundpipes circumference and the 40 % of the circumference of apipe arch that constitutes the invert. Pavements shall conformto the shape of the pipe and have
49、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 The 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 96
