1、Designation: C1208/C1208M 11C1208/C1208M 16Standard Specification forVitrified Clay Pipe and Joints for Use in Microtunneling,Sliplining, Pipe Bursting, and Tunnels1This standard is issued under the fixed designation C1208/C1208M; the number immediately following the designation indicates theyear of
2、 original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification establishes the criteria for the manufa
3、cture, quality assurance testing, inspection, installation, fieldacceptance testing, and product marking of vitrified clay jacking pipe to be used in microtunneling, the pilot tubemicrotunneling,method, sliplining, pipe bursting, and in casings and tunnels for the conveyance of sewage, industrial wa
4、stes, andstorm water.1.1.1 Sections 3 through 7 and 9 of this specification contain manufacturing, quality assurance testing, inspection, and productmarking criteria which are applicable to vitrified clay pipe prior to installation.1.1.2 Section 8 of this specification contains criteria for the inst
5、allation and field acceptance testing of vitrified clay pipe.1.2 This specification also covers materials and test requirements for jointing of the pipe.1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in eachsystem may not be
6、exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-conformance with the standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
7、of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C67 Test Methods for Sampling and Testing Brick and Structural Clay TileC301 Test Methods for Vitrified C
8、lay PipeC828 Test Method for Low-Pressure Air Test of Vitrified Clay Pipe LinesC896 Terminology Relating to Clay ProductsC1091 Test Method for Hydrostatic Infiltration Testing of Vitrified Clay Pipe LinesD395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and
9、Thermoplastic ElastomersTensionD471 Test Method for Rubber PropertyEffect of LiquidsD518 Test Method for Rubber DeteriorationSurface Cracking (Withdrawn 2007)3D543 Practices for Evaluating the Resistance of Plastics to Chemical ReagentsD573 Test Method for RubberDeterioration in an Air OvenD1149 Tes
10、t Methods for Rubber DeteriorationCracking in an Ozone Controlled EnvironmentD2240 Test Method for Rubber PropertyDurometer Hardness3. Terminology3.1 DefinitionsTerminology C896 can be used for clarification of terminology in this specification.1 This specification is under the jurisdiction of ASTM
11、Committee C04 on Vitrified Clay Pipe and is the direct responsibility of Subcommittee C04.20 on Methods of Testand Specifications.Current edition approved Jan. 1, 2011May 1, 2016. Published January 2011May 2016. Originally approved in 1991. Last previous edition approved in 20082011 asC1208/C1208M 0
12、8.C1208/C1208M 11. DOI: 10.1520/C1208_C1208M-11. 10.1520/C1208_C1208M-16.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the A
13、STM website.3 The last approved version of this historical standard is referenced on www.astm.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically
14、possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700
15、, West Conshohocken, PA 19428-2959. United States1PIPE4. Materials and Manufacture4.1 Vitrified clay pipe shall be manufactured from fire clay, shale, surface clay, or a combination of these materials that, whenformed into pipe and fired to suitable temperatures, yields a product that conforms to th
16、is specification.4.2 Test Requirements for Pipe:4.2.1 Test Samples:4.2.1.1 When requested, test samples representative of the pipe to be used shall be selected by the purchaser or his representativefrom the suppliers stock.4.2.1.2 The number of samples to be tested shall not exceed 0.5 % of the numb
17、er of pipe of each size furnished, except thatno less than three samples shall be tested.4.2.1.3 If any of the test samples fail to meet the requirements of 4.2.2 through 4.2.5, the manufacturer will be allowed to retesttwo additional samples representative of the original material for each one that
18、 failed. The pipe will be acceptable if all retestsamples meet the test requirements. If any of the re-test pipe fail, the lot shall be rejected.4.2.1.4 If, subsequent to an initial test failure, the accuracy of the testing equipment is questioned, at the request of themanufacturer, the equipment sh
19、all be recalibrated and a retest made or a retest made using other equipment of known accuracy.4.2.2 Bearing Strength:4.2.2.1 Pipe shall meet the bearing strength requirements of Table 1 or Table 2.4.2.2.2 The manufacturer may test and certify pipe to higher bearing strengths than listed in Table 1
20、and Table 2.4.2.3 Compressive Strength Test:4.2.3.1 This test is used to determine the compressive strength of pipe material. This test shall be performed only whenspecified.4.2.3.2 Pipe material shall have a minimum compressive strength of 7000 psi 48 MPa.4.2.3.3 The testing machine shall be of a t
21、ype having sufficient capacity and capable of providing the rates of loading prescribed.The bearing area from which the force will be applied shall be spherically seated.4.2.3.4 The specimen shall be a cylinder cut from the pipe so that the length of the specimen is parallel with the longitudinalaxi
22、s of the pipe. The cylinder shall have a minimum diameter of 0.75 in. 19 mm for pipe wall thicknesses through 212 in. 64mm and 2 in. 51 mm for greater wall thicknesses and a diameter to length ratio of 1:1. The tolerance of the diameter and lengthshall be +10 % 0 %. Measurements shall be made to the
23、 nearest 0.01 in. 0.25 mm.4.2.3.5 The test load on the specimen shall be centered axially on the ends of the cylinder.4.2.3.6 The bearing surfaces of the specimen shall be parallel planes and perpendicular to the vertical axis.4.2.3.7 The bearing surface of the test samples shall be ground to planes
24、, parallel within 0.002 in. 0.05 mm. To ensure auniform bearing of the sample, place between two plywood sheets. The plywood shall be three-ply, ranging from 0.19 in. 4 mmto 0.25 in. 6 mm thick, made of soft wood and free from knots. The plywood shall exceed the specimen diameter by 0.50 in.13 mm to
25、 1.50 in. 38 mm. Use a fresh pair of plywood sheets for each test.4.2.3.8 Apply the load up to 3500 psi 24 MPa. The remaining required load is applied at the uniform rate in not less than 1min nor more than 2 min.4.2.3.9 Calculate and report the compressive strength as follows:Compressive Strength,C
26、 5W/A (1)TABLE 1 Three Edge Bearing StrengthNominal Diameter, in. Bearing Strength, lb/linear ft4 20004 20006 20006 20008 22008 220010 240012 260015 290018 330021 385024 440027 470030 500036 600042 700048 8000C1208/C1208M 162where:C = compressive strength of the specimen, psi kPa to the nearest 100
27、psi 690 kPa,W = recorded load, lbf kgf/mm2, indicated by the testing machine, andA = average of the gross areas of the upper and lower bearing surfaces of the specimen, in.2 mm2 to the nearest 0.04 in.2 26mm2.4.2.4 Hydrostatic Pressure Test or Absorption Test:4.2.4.1 The manufacturer shall, at his o
28、ption, apply either a hydrostatic pressure test or an absorption test to all of the testspecimens.4.2.4.2 Hydrostatic Pressure TestWhen the pipe is subjected to an internal hydrostatic pressure of 10 psi 69 kPa for theelapsed time indicated in Tables 3 and 4, there shall be no leakage. Moisture appe
29、aring on the surface shall not be consideredleakage. However, moisture which starts to run on the pipe shall be construed as leakage, regardless of quantity. At the option ofthe manufacturer, water within approximately 5F 3C of the ambient air temperature may be introduced into the pipe for controlo
30、f condensation.TABLE 2 Three Edge Bearing Strength SINominal Diameter, mm Bearing Strength, kN/m100 29100 29150 29150 29200 32200 32250 35250 35300 38300 38400 42400 42500 52500 52600 64600 64700 69700 69800 77800 77900 88900 881000 961000 961100 1051200 120TABLE 3 Hydrostatic Pressure Test TimeBarr
31、el Thickness, in. Test Time, minUp to and including 1 7Up to and including 1 7Over 1 including 1.5 9Over 1 including 1.5 9Over 1.5 including 2 12Over 2 including 2.5 15Over 2.5 including 3 18Over 3 21TABLE 4 Hydrostatic Pressure Test Time SIBarrel Thickness, mm Test Time, minUp to and including 25 7
32、Up to and including 25 7Over 25 including 38 9Over 25 including 38 9Over 38 including 50 12Over 50 including 64 15Over 64 including 76 18Over 76 21C1208/C1208M 1634.2.4.3 Absorption TestThe absorption of vitrified clay pipe shall not exceed 8 % when tested in accordance with TestMethods C301.4.2.5 A
33、cid Resistance:4.2.5.1 This test is used to determine the resistance of pipe to the action of acids specified in Test Methods C301. The test shallbe performed only when specified.4.2.5.2 The pipe of each size and shipment shall be acceptable if the acid-soluble matter, from specimens representing su
34、ch pipe,does not exceed 0.25 %.4.3 Sizes and Dimensions:4.3.1 Sizes and dimensions of pipe shall conform to the requirements of Table 5 or Table 6.4.3.2 The average inside diameter shall be determined by taking any two 90 (1.6-rad) opposing measurements and averagingthe readings.4.3.3 The outside di
35、ameter shall not vary from a true circle by more than 2 % of its nominal diameter.4.3.3.1 The out-of-round dimension is the difference between the maximum and minimum diameters measured at any onelocation along the pipe barrel.4.3.4 Pipe shall not deviate from straight by more than 0.05 in./linear f
36、t 4 mm/m when the maximum offset is measured fromthe concave side of the pipe. See Fig. 1.4.3.4.1 Measurements shall be taken by placing a straightedge on the concave side of the full length of the pipe barrel excludingthe joint and measuring the maximum distance between the straightedge and concave
37、 side of the pipe.4.3.5 The end squareness measured at the pipe ends shall not deviate by more than 0.005 in./in. 0.005 mm/mm of outsidediameter to a maximum of 0.10 in. 2.5 mm when measured in accordance with Fig. 1.4.3.6 The pipe wall thickness shall be a suitable dimension to adequately distribut
38、e the field jacking forces and shall beprescribed by the manufacturer.4.4 Fractures, Cracks, and Blisters:4.4.1 There shall be no fractures or cracks passing through the barrel, visible to the unaided eye.4.4.2 Chips, fractures, or blisters on the pipe shall not exceed 2 in. 51 mm in any surface dim
39、ension and shall not exceed adepth of one eighth of the minimum thickness of the barrel.JOINTS5. Materials and Manufacture5.1 Principles of Joint Design:5.1.1 A typical joint design is indicated in Fig. 2.5.1.2 Sealing elements shall be compressed between bearing surfaces to ensure watertight integr
40、ity as required in 5.3.5.1.3 Sealing elements may be independent or bonded to a bearing surface.5.1.4 The ends of the pipe shall incorporate a compression ring to distribute the jacking forces which develop during installation.5.1.5 The outside diameter of the sleeve shall not vary from the outside
41、diameter of the pipe barrel to the extent that it wouldrestrict the installation during jacking.5.2 Requirements:5.2.1 Sealing components shall meet the requirements of Table 7.TABLE 5 Dimensions and VariationsNominal Diameter, in. Out-of-StraightA ,in./linear ft, max Out-of-Round,in., max Out-of-Sq
42、uareA ,in., maxB Laying Length MinusTolerance, in./linear ft Nominal Inside Diameter MinusToleranceC , in.4 0.05 0.08 0.03 0.25 0.196 0.05 0.12 0.04 0.25 0.258 0.05 0.16 0.05 0.25 0.3110 0.05 0.20 0.06 0.25 0.3812 0.05 0.24 0.08 0.25 0.4415 0.05 0.30 0.09 0.25 0.5618 0.05 0.36 0.10 0.25 0.6921 0.05
43、0.42 0.10 0.25 0.8124 0.05 0.48 0.10 0.38 0.9427 0.05 0.54 0.10 0.38 1.0630 0.05 0.60 0.10 0.38 1.1936 0.05 0.72 0.10 0.38 1.4442 0.05 0.84 0.10 0.38 1.4448 0.05 0.96 0.10 0.38 1.44A See Fig. 1.B These numbers are approximate since they are computed using outside diameter. Consult the pipe manufactu
44、rer for specific dimensions.C There is no fixed + tolerance limit.C1208/C1208M 1645.2.2 Sleeves shall be made of a material which in conjunction with the sealing elements, forms a joint which meets the testrequirements of 5.3.5.3 Test Requirements for Assembled Joints:5.3.1 The number of specimens t
45、o be tested shall not exceed 0.25 % of the number of pipe of each size furnished. A minimumof one joint shall be tested for each diameter furnished.5.3.2 The assembled joint shall not leak when tested in accordance with 5.4.5.4 Test Methods for Assembled Joints:5.4.1 Assemble two pipes and restrain
46、only the amount necessary to prevent longitudinal movement.TABLE 6 Dimensions and Variations SINominalDiameter,mmOut-of-StraightA ,mm/M, maxOut-of-Round,mm, maxOut-of-SquareA ,mm, maxBLaying Length MinusTolerance,mm/MNominal InsideDiameter MinusToleranceC , mm100 4 2 0.5 20 5150 4 3 0.75 20 6200 4 4
47、 1.0 20 8250 4 5 1.25 20 10300 4 6 1.5 20 12400 4 8 2.0 20 16500 4 10 2.5 20 20600 4 12 2.5 30 24700 4 14 2.5 30 28800 4 16 2.5 30 32900 4 18 2.5 30 361000 4 20 2.5 30 361100 4 22 2.5 30 361200 4 24 2.5 30 36A See Fig. 1.B These numbers are approximate since they are computed using outside diameter.
48、 Consult the pipe manufacturer for specific dimensions.C There is no fixed + tolerance limit.NOTE 1Illustration is exaggerated to show dimensions.FIG. 1 Pipe End Squareness and Out of StraightFIG. 2 Typical Joint DesignC1208/C1208M 1655.4.2 Uniformly support and secure one of the pipe. To the other
49、pipe, apply a shear load of 50 lbf/in. 8.8 kN/m of nominaldiameter uniformly over an arc of not less than 120 (2.1 rad) along a distance of 12 in. 305 mm adjacent to the joint. See Fig.3.5.4.3 Apply an internal 25-ft head (10.75 psi) 74 kPa of water pressure for a period of 1 h.5.4.3.1 The manufacturer may test and certify assembled joints to a higher head of water pressure.6. Test Methods6.1 Perform required tests in accordance with Test Methods C301 and C67.7. Inspection7.1 All pipe is subject to i
