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现行 ASTM D8202-18(2024)
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Standard Specification for Hydraulically Applied 100% Wheat Straw Fiber Mulches 液压应用100%麦草纤维覆盖物的标准规范
发布日期: 2024-07-01
1.1 本规范涵盖了用于植被恢复、泥沙和侵蚀控制的液压小麦秸秆纤维覆盖物的成分、物理要求和制造方法。 1.2 本规范的目的是为描述和指定水力应用中的麦秸纤维覆盖材料提供参考。 1.3 单位-- 除非下文另有说明,否则以英寸-磅单位表示的值应被视为标准值。括号中给出的值是国际单位制的数学转换,仅供参考,不被视为标准值。 根据惯例,使用“替代”系统标识筛网名称 E11 例如3英寸和200号,而不是分别为75毫米和75微米的“标准”。 1.4 所有观察值和计算值应符合《规程》中规定的有效数字和四舍五入的准则 D6026 ,除非被本试验方法取代。 1.4.1 用于规定如何在标准中收集/记录和计算数据的程序被视为行业标准。 此外,它们代表了通常应保留的有效数字。所使用的程序不考虑材料变化、获取数据的目的、特殊目的研究或对用户目标的任何考虑;并且通常的做法是增加或减少报告数据的有效数字以与这些考虑相称。考虑工程数据分析方法中使用的有效数字超出了这些测试方法的范围。 1.5 本标准并不旨在解决与其使用相关的所有安全问题(如果有的话)。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践,并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。
1.1 This specification covers the composition, physical requirements, manufacturing methods of hydraulically applied wheat straw fiber mulches for revegetation, sediment and erosion control. 1.2 The purpose of this specification is to provide a reference for describing and specifying wheat straw fiber mulch materials for hydraulic applications. 1.3 Units— The values stated in inch-pound units are to be regarded as standard, except as noted below. The values given in parentheses are mathematical conversions to SI units, which are provided for information only and are not considered standard. The sieve designations are identified using the “alternative” system in accordance with Practice E11 , such as 3-in. and No. 200, instead of the “standard” of 75-mm and 75-µm, respectively. 1.4 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026 , unless superseded by this test method. 1.4.1 The procedures used to specify how data are collected/recorded and calculated in the standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives; and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations. It is beyond the scope of these test methods to consider significant digits used in analysis methods for engineering data. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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归口单位: D18.25
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