GB/T 17642-2008 in English

《GB/T 17642-2008土工合成材料 非织造布复合土工膜》由608（中国纺织工业联合会）归口，TC209SC7（全国纺织品标准化技术委员会产业用纺织品分会）执行，主管部门为中国纺织工业联合会。
本标准是对GB/T 17642-1998《土工合成材料 非织造复合土工膜》的修订。
本标准规定了非织造布复合土工膜的产品分类、规格、代号、技术要求及品质评定、试验方法、检验规则、包装、标志、贮运等。
本标准适用于以非织造土工布为基材，以聚乙烯、聚氯乙烯等为膜材，复合而成的非织造布复合土工膜。
本标准是对GB/T 17642-1998作了以下技术性修改：
――标准名称修改为《土工合成材料 非织造复合土工膜》；
――产品规格由单位面积质量改为以标称断裂强度表示；
――产品代号由7个部分简化为5个部分；
――将原标准中表1和表2进行整合，断裂强度、撕破强力、CBR顶破强力指标均规定具体指标，并增加一档指标要求；
――断裂伸长率修改为标准强度对应伸长率；
――幅宽改为参考指标，单位面积质量不再作为考核指标；
――简化了外观检验；
――简化了包装、贮运和标准。

1 Scope

This standard specifies the product classification, specification, code, technical requirements and quality evaluation, test methods, inspection rules as well as packaging, marking, transportation and storage of geocomposites made of geononwoven and geomembrance.

This standard is applicable to geocomposites made of geononwoven and geomembrance, taking geononwoven as base material, and polyethylene, polyvinyl chloride and the like as membrane material.

2 Normative References

The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated reference, subsequent amendments to (excluding any corrigendum), or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For any undated references, the latest edition of the document referred to applies.

GB/T 4667 Textiles - Woven Fabrics - Measurement of Width of Pieces (GB/T 4667-1995, eqv ISO 3932:1976)

GB/T 13760 Geotextiles - Sampling and Preparation of Test Specimens (GB/T 13760-1992, eqv ISO 9862:1990)

GB/T 13761 Geotextiles - Determination of Thickness (GB/T 13761-1992, eqv ISO 9863:1990)

GB/T 13762 Geotextiles - Determination of Mass per Unit Area (GB/T 13762-1992, eqv ISO 9864:1990)

GB/T 13763 Geosynthetics - Determination of Trapezoid Tearing Force

GB/T 14800 Test Method for Determining the Puncture Resistance of Geotextiles

GB/T 15788 Geotextiles and Geotextile-related Products - Wide-width Tensile Test (GB/T 15788-2005, ISO 10319:1993, MOD)

GB/T 16422.1~16422.3 Plastics - Methods of the Exposure to Laboratory Light Sources

GB/T 16989 Geotextiles - Tensile Test for Joints/Seams by Wide-width Method (GB/T 16989-1997, neq ISO 10321:1992)

GB/T 17598 Geotextiles and Geotextile-related Products - Determination for Thickness of Single Layers of Multilayer Products

GB/T 17630 Geotextiles and Geotextile-related Products - Dynamic Perforation Test (Cone-drop Test)

GB/T 17631 Geotextiles and Geotextile-related Products - Test Method for Determining the Resistance to Oxidation

GB/T 17632 Geotextiles and Geotextile-related Products - Test Method for Determining the Resistance to Liquids of Acids and Bases

GB/T 17633 Geotextiles and Geotextile-related Products - Determination of Water Flow Capacity in Their Plane

GB/T 17635.1 Geotextiles and Geotextile-related Products - Determination of Friction Characteristics - Part 1: Direct Shear Test

GB/T 17636 Geotextiles and Geotextile-related Products - Determination of Abrasion Resistance - Sand Paper/Sliding Block Method

GB/T 17637 Geotextiles and Geotextile-related Products - Determination of the Tensile Creep and Creep Rupture Behaviour

GB/T 17638 Geosynthetics - Synthetic Staple Fibers Needlepunched Nonwoven Geotextiles

GB/T 17639 Geosynthetics - Synthetic Filament Spunbond and Needlepunched Nonwoven Geotextiles

GB/T 17643 Geosynthetics - Polyethylene Geomembrane

GB/T 19978 Geotextiles and Geotextile-related Products - Determination of the Puncture Resistance

GB/T 19979.1 Geosynthetics - Penetration Resist Property - Part 1: Determination of Static Hydraulic Pressure

GB/T 19979.2 Geosynthetics - Penetration Resist Property - Part 1: Determination of Penetration Coefficient

FZ/T 01010 Coated Fabrics - Determination of the Coating Adhesion Strength

3 Product Classification, Specification and Code

3.1 Product classification

Geocomposites made of geononwoven and geomembrance may be classified according to the following methods:

——According to base material: synthetic staple fibers needlepunched geocomposites made of geononwoven and geomembrance and synthetic filament spunbond and needlepunched geocomposites made of geononwoven and geomembrance;

——According to membrane material: composite geomembranes made of polyethylene (PE), polyvinyl chloride (PVC) and chlorinated polyethylene (CPE), etc.;

——According to structure: composite geomembranes of one fabric and one membrane, two fabrics and one membrane, one fabric and two membranes, two fabrics and two membranes, multiple fabrics and multiple membranes, etc.

Foreword i
1 Scope
2 Normative References
3 Product Classification, Specification and Code
4 Requirements
5 Test Methods
6 Inspection Rules
7 Packaging, Transportation, Storage and Marking