ASTM D8123-22 测量地质灾害网开口尺寸的标准试验方法
基本信息
标准号：ASTM D8123-22
发布单位或类别：美国-美国材料与试验协会（US-ASTM）
发布日期：2022-01-15
实施日期：
废止日期：
CCS分类：
ICS分类：
17.040.01 长度和角度测量 – 长度和角度测量综合
19.120 试验 – 粒度分析、筛分
适用范围/摘要
1.1 这些试验方法是指数试验，用于测量地质灾害网或其组件的开口尺寸，或测量其制造时的开口尺寸。它们可用于估算岩石或其他物体的最大尺寸，这些岩石或物体可能会通过地质灾害网中的单个开口，而不会将载荷转移到金属丝网或金属丝网，也可用于质量控制目的。这些试验方法不用于确定地质灾害网可能包含的最大尺寸岩石或其他物体，通过网强度的调动。 这些试验方法不适用于测量土工合成材料（如草皮加固垫或土工织物）的开口尺寸，该土工合成材料可作为具有地质灾害网的复合系统制造。 1.2 单位- 以国际单位制表示的数值应视为标准值。括号中给出的值仅供参考，不被视为标准值。以国际单位制以外的单位报告试验结果不应视为不符合本标准。 1.3 所有观察值和计算值应符合实践中确定的有效数字和舍入准则 D6026 . 1.3.1 为了将测量值或计算值与规定限值进行比较，应将测量值或计算值四舍五入到规定限值中有效数字的最近小数点。 1.3.2 用于指定如何在标准中收集/记录或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、特殊目的研究或用户目标的任何考虑因素； 通常的做法是增加或减少报告数据的有效位数，以与这些考虑因素相称。考虑工程设计分析方法中使用的有效数字超出了本标准的范围。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 使用地质灾害网作为介质来保留岩石颗粒需要其与围岩之间的兼容性。这些测试方法测量地质灾害网的开口尺寸，该开口尺寸可用于估计岩石或其他物体的最大尺寸，这些岩石或物体可能通过地质灾害网而不会将负载转移到金属丝网或金属丝网。 5.2 这些试验方法可适用于地质灾害网的其他部件，如规则间距的钢筋元件或二次网孔。 5.3 这些测试方法也可用于制造过程中的质量控制，以及确保供应的材料符合项目或材料规范的质量保证。 注1: 本标准产生的结果的质量取决于执行该标准的人员的能力，以及所用设备和设施的适用性。符合实践标准的机构 D3740 通常认为能够胜任和客观的测试/采样/检查等。本标准的用户应注意遵守惯例 D3740 本身并不能保证可靠的结果。可靠的结果取决于许多因素；实践 D3740 提供了一种评估其中一些因素的方法。
1.1 These test methods are index tests to measure the opening size of a geohazard netting, or its components, or both, as it has been manufactured. They can be used for estimating the largest size of rock or other object that may pass through an individual opening in the geohazard netting without transferring load to the wire mesh or wire net and may also be used for quality control purposes. These test methods are not used to determine the maximum size rock or other object that the geohazard netting may contain through mobilization of the netting’s strength. These test methods do not apply to the measurement of the opening size of a geosynthetic, such as a turf reinforcement mat or geotextile, that may be manufactured as a composite system with the geohazard netting. 1.2 Units— The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information only and are not considered standard. Reporting of test results in units other than SI shall not be regarded as nonconformance with this standard. 1.3 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026 . 1.3.1 For purposes of comparing a measured or calculated value(s) with specified limits, the measured or calculated value(s) shall be rounded to the nearest decimal of significant digits in the specified limit. 1.3.2 The procedures used to specify how data are collected/recorded or 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 objective; 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 this standard to consider significant digits used in analysis methods for engineering design. 1.4 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. 1.5 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. ====== Significance And Use ====== 5.1 Using a geohazard netting as a medium to retain rock particles necessitates compatibility between it and the adjacent rock. These test methods measure the opening size of a geohazard netting which may be used to estimate the largest size of rocks or other objects that may pass through the geohazard netting without transferring load to the wire mesh or wire net. 5.2 These test methods may be applied to other components of the geohazard netting, such as regularly spaced reinforcement elements or secondary mesh openings. 5.3 These test methods may also be used for quality control during the manufacturing process and quality assurance that materials supplied conform to project or material specifications. Note 1: The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.
研制信息
起草单位：
起 草 人：
归口单位：
D18.25