AASHTO M 252-2009 Standard Specification for Corrugated Polyethylene Drainage Pipe《聚乙烯波纹排水管标准规范》.pdf
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1、Standard Specification for Corrugated Polyethylene Drainage Pipe AASHTO Designation: M 252-09 (2012) American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 249 Washington, D.C. 20001TS-4b M 252-1 AASHTO Standard Specification for Corrugated Polyethyle
2、ne Drainage Pipe AASHTO Designation: M 252-09 (2012) 1. SCOPE 1.1. This specification covers the requirements and methods of test for corrugated polyethylene (PE) pipe, couplings, and fittings for use in subsurface drainage systems, storm sewers, and in surface drainage (culverts), where soil suppor
3、t is given to the pipes flexible walls in all applications. 1.1.1. Nominal sizes of 75 to 250 mm (3 to 10 in.) are included. 1.1.2. Materials, dimensions, pipe stiffness, environmental stress-crack resistance, perforations, joining systems, and forms of marking are specified. Note 1When PE pipe is t
4、o be used in locations where the ends may be exposed, consideration should be given to combustibility of the PE and the deteriorating effects of prolonged exposure to ultraviolet radiation. 1.2. UnitsThe values stated in SI units are to be regarded as standard. Within the text, the U.S. customary un
5、its are shown in parentheses, and may not be exact equivalents. 1.3. The following precautionary caveat pertains only to the test method portion, Section 9.3 of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the respon
6、sibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 2. REFERENCED DOCUMENTS 2.1. AASHTO Standard: R 16, Regulatory Information for Chemicals Used in AASHTO Tests 2.2. ASTM Standards: D 618,
7、 Standard Practice for Conditioning Plastics for Testing D 883, Standard Terminology Relating to Plastics D 1693, Standard Test Method for Environmental Stress-Cracking of Ethylene Plastics D 2122, Standard Test Method for Determining Dimensions of Thermoplastic Pipe and Fittings D 2412, Standard Te
8、st Method for Determination of External Loading Characteristics of Plastic Pipe by Parallel-Plate Loading D 3350, Standard Specification for Polyethylene Plastics Pipe and Fittings Materials D 4218, Standard Test Method for Determination of Carbon Black Content in Polyethylene Compounds By the Muffl
9、e-Furnace Technique F 405, Standard Specification for Corrugated Polyethylene (PE) Pipe and Fittings F 412, Standard Terminology Relating to Plastic Piping Systems 2014 by the American Association of State Highway and Transportation Officials.All rights reserved. Duplication is a violation of applic
10、able law.TS-4b M 252-2 AASHTO 3. TERMINOLOGY 3.1. The terminology used in this standard is in accordance with the definitions given in ASTM D 883 and ASTM F 412 unless otherwise specified. 3.2. crackany break or split that extends through the wall. 3.3. creasean irrecoverable indentation; generally
11、associated with wall buckling. 3.4. reworked materiala plastic from a processors own production that has been reground, pelletized, or solvated after having been previously processed by molding, extrusion, etc. (ASTM D 883). 4. CLASSIFICATION 4.1. The corrugated PE pipe covered by this specification
12、 is classified as follows: 4.1.1. Type CThis pipe shall have a full circular cross section, with a corrugated surface both inside and outside. Corrugations may be either annular or helical. 4.1.1.1. Type CPThis pipe shall be Type C with Class 2 perforations. 4.1.2. Type SThis pipe shall have a full
13、circular cross section, with an outer corrugated pipe wall and a smooth inner liner. Corrugations may be either annular or helical. Type S pipe is not available in nominal sizes of less than 100 mm (4 in.). 4.1.2.1. Type SPThis pipe shall be Type S with either Class 1 or Class 2 perforations. 4.2. C
14、lass 1 and Class 2 perforations are as described in Sections 7.4.1 and 7.4.2. 5. ORDERING INFORMATION 5.1. Orders using this specification shall include the following information as necessary to adequately describe the desired product: 5.1.1. AASHTO designation and year of issue; 5.1.2. Type of pipe
15、 (Section 4.1); 5.1.3. Diameter and length required, either total length or length of each piece and number of pieces; Note 2Type C and CP pipe less than 200 mm (8 in.) in diameter may be supplied coiled; coiling of Type C and CP pipe 200 mm (8 in.) in diameter or greater is not recommended; Type S
16、and SP pipe is not supplied in coils. 5.1.4. Number of couplings; 5.1.5. For Type SP pipe, class of perforations (Class 2 is furnished if not specified) (Section 7.4); and 5.1.6. Certification, if desired (Section 12.1). 2014 by the American Association of State Highway and Transportation Officials.
17、All rights reserved. Duplication is a violation of applicable law.TS-4b M 252-3 AASHTO 6. MATERIALS 6.1. Basic Materials: 6.1.1. Extruded Pipe and Blow Molded FittingsPipe and fittings shall be made of virgin PE resin compounds meeting the requirements of ASTM D 3350 and cell classification 424420C,
18、 except that the carbon black content shall not exceed 5 percent. Resins that have higher cell classifications in one or more properties are acceptable provided product requirements are met. 6.1.2. Rotational Molded Fittings and CouplingsFittings and couplings shall be made of virgin PE resins meeti
19、ng the requirements of ASTM D 3350 and cell classification 213320C, except that the carbon black content shall not exceed 5 percent. Resins that have higher cell classifications in one or more properties are acceptable provided product requirements are met. 6.1.3. Injection Molded Fittings and Coupl
20、ingsFittings and couplings shall be made of virgin PE resins meeting the requirements of ASTM D 3350 and cell classification 314420C, except that the carbon black content shall not exceed 5 percent. Resins that have higher cell classifications in one or more properties are acceptable provided produc
21、t requirements are met. 6.2. Reworked MaterialIn lieu of virgin PE, clean reworked material may be used, provided that it meets the cell class requirements as described in Section 6.1. 7. REQUIREMENTS 7.1. WorkmanshipThe pipe and fittings shall be free of foreign inclusions and visible defects as de
22、fined herein. The ends of the pipe shall be cut squarely and cleanly so as not to adversely affect joining or connecting. 7.1.1. Visible DefectsCracks, creases, unpigmented or nonuniformly pigmented pipe are not permissible. 7.1.2. Inner LinerFor Type S and SP pipe, the inner liner shall be fused to
23、 the outer corrugated wall at all internal corrugation crests. 7.2. Pipe Dimensions: 7.2.1. Nominal SizeThe nominal size for the pipe and fittings is based on the nominal inside diameter of the pipe. Nominal diameters shall be sized for Type C and CP pipe in not less than 25-mm (1 in.) increments fr
24、om 75 to 250 mm (3 to 10 in.). Nominal sizes shall be sized for Type S and SP pipe in not less than 50-mm (2 in.) increments from 100 to 250 mm (4 to 10 in.). 7.2.2. Inner LinerFor Type S and SP pipe, the inner liner shall have a minimum thickness of 0.5 mm (0.02 in.) for pipe of 100 mm (4 in.) and
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