ASTM D6244-2006(2011) 6875 Standard Test Method for Vertical Compression of Geocomposite Pavement Panel Drains《土工符合材料公路板式排水沟垂直压缩的标准试验方法》.pdf
《ASTM D6244-2006(2011) 6875 Standard Test Method for Vertical Compression of Geocomposite Pavement Panel Drains《土工符合材料公路板式排水沟垂直压缩的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D6244-2006(2011) 6875 Standard Test Method for Vertical Compression of Geocomposite Pavement Panel Drains《土工符合材料公路板式排水沟垂直压缩的标准试验方法》.pdf(5页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D6244 06 (Reapproved 2011)Standard Test Method forVertical Compression of Geocomposite Pavement PanelDrains1This standard is issued under the fixed designation D6244; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the
2、 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 test method covers vertical strain and core areachange of geocomposite pavement drains, such as thoseinc
3、luded in Specification D7001, under vertical compression.1.2 The values as stated in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is the
4、responsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D1566 Terminology Relating to RubberD4354 Practice for Sampling of Geosynthetics for Te
5、stingD4439 Terminology for GeosyntheticsD7001 Specification for Geocomposites for Pavement EdgeDrains and Other High-Flow Applications3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 compressive deformation, nthe decrease in gagelength produced in the test specimen by a compres
6、sive load,expressed in units of length (new).3.1.2 compressive strain, nthe ratio of compressive defor-mation to the gage length of the test specimen, expressed as adimensionless ratio (new).3.1.3 gage length, nthe known distance between twobench marks (see Terminology D1566).3.1.3.1 DiscussionIn co
7、mpression testing of geosynthet-ics, gage length is the measured thickness of the test specimenunder specified compressional force, expressed in units oflength.3.1.4 geosynthetic, na planar product manufactured frompolymeric material used with foundation, soil, rock, earth, orany other geotechnical
8、engineering-related materials as anintegral part of a manmade project, structure, or system (seeTerminology D4439).3.1.5 index test, na test procedure, which may contain aknown bias but which may be used to order a set of specimenswith respect to the property of interest (see TerminologyD4439).4. Su
9、mmary of Test Method4.1 Geocomposite pavement edge drains are placed into a304.8-mm (12-in.) long, 106.7-mm (4.20-in.) wide, and610-mm (24-in.) tall glass and aluminum compression cham-ber. The geocomposites are placed against the wall of thechamber. The remainder of the chamber is then backfilled w
10、itha specified sand. A vertical load is applied at a constant rate.The vertical strains of the panels and change in core area andheight is recorded at 1112.5-N (250-lb) increments. The test isdiscontinued at 4450 N (1 000 lb) or 156.5 kPa (22.7 psi). Thechange in vertical strain, core height, and co
11、re area is deter-mined.5. Significance and Use5.1 The vertical compression test for geocomposite pave-ment panel drains is intended to simulate vertical, horizontal,and eccentric loading resulting from an applied vertical load.The results of the analyses, including vertical strain of thepanels and c
12、ore area change, may be used as an index test. Thevertical compression test may be used to evaluate core areachange for a given load.5.2 The vertical compression test may be used to evaluatepercent vertical strain for a given load.1This test method is under the jurisdiction of ASTM Committee D35 onG
13、eosynthetics and is the direct responsibility of Subcommittee D35.01 on Mechani-cal Properties.Current edition approved Oct. 1, 2011. Published November 2011. Originallyapproved in 1998. Last previous edition approved in 2006 as D6244 - 06. DOI:10.1520/D6244-06R11.2For referenced ASTM standards, vis
14、it 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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2
15、959, United States.5.3 This test method may be modified to evaluate core areachange and vertical strain under various backfill conditions.6. Apparatus6.1 Compression MachineA compression machine that iscapable of producing at least 4450 N (1 000 lb) of load. Themachine must be capable of loading at
16、a rate of 445 N (100lbs)/min, and maintaining a constant load for an indefiniteperiod.6.2 Compression BoxThe box must be capable of holdingthe specimen and the backfill material, and it must be capableof supporting a minimum vertical load of 4450 N (1 000 lb).The design of the box and the loading pl
17、ate shall conform tothe attached Fig. 1. The box shall be rigid enough to resistdeformation.6.3 Clear Plastic Spacers (shown and described in Fig.2)These spacers are used to protect the tempered glass endsof the compression box from scratches.6.4 SandSufficient sand to fill the compression box.Natur
18、al sand is recommended. The sand shall have a gradationconforming to Table 1. The sand shall be oven dried and cooledto room temperature.6.5 Tracing PaperThe paper must be suitable for tracingand have a minimum size of 220 mm by 508 mm (8.5 in. by 20in.).6.6 Light SourceAny high intensity point ligh
19、t source isacceptable (for example, a large mag light).6.7 PlanimeterThe planimeter is used to determine areato calculate loss of core area at the various load increments (aminimum of a digital planimeter should be used to calculatecore area). If computer digitizing equipment or scanningequipment is
20、 available, this may be used in lieu of theplanimeter.6.8 Scale (Length Measuring Device)A minimum rangeof 450 mm (18 in.), and an accuracy of 1 mm (116 in.).7. Sampling7.1 Lot SampleDivide the product into lots and take thelot sample as directed in Practice D4354.7.2 Laboratory SampleConsider the u
21、nits in the lotsample as the units in the laboratory sample for the lot to betested. Take for a laboratory sample a sample extending the fullwidth of the geocomposite edge drain, of sufficient length sothat the requirements in 7.3 are met.FIG. 1 Edge Drain Compression ChamberD6244 06 (2011)2NOTE 1Th
22、is test method only addresses products with uniform(parallel and perpendicular) geometry. This procedure does not addressproducts with other geometry.7.3 The height of the geocomposite edge drain sampletested shall be equal to the height of the drain in the field unlessotherwise agreed to by the pur
23、chaser and manufacturer. Thelength of the geocomposite sample shall be 298.5 mm (11.75in.). The sample length shall be cut as close to or through asupport post, or both, if possible, or trim the edge of the drainto ensure that no fabric is unsupported at the ends of the sampleto reduce end effects.
24、Thin plates of plexiglass (spacers) alsomay be used to ensure a proper fit into the chamber.NOTE 2Spacers should not exceed a total thickness of 6.4 mm (14 in.).NOTE 3False readings in core changes can occur due to changesoccurring only at the end of the sample.7.4 When sampling, the geotextile shal
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