1.1 该试验方法测量当试样浸入水中一段规定时间时，轧制侵蚀控制产品质量的变化。质量变化报告为试样原始干质量的百分比。 1.2 单位- 以国际单位制或英寸磅单位[括号内给出]表示的数值应单独视为标准。每个系统中规定的值可能不是完全相等的；因此，每个系统应独立使用。将两个系统的值结合起来可能会导致不符合标准。以国际单位制以外的单位报告试验结果不应被视为不符合本标准。 1.2.1、 工程/建筑行业的常见做法是同时使用磅来表示质量单位（lbm）和力单位（lbf）。这种做法隐含地结合了两个独立的单位系统；即绝对系统和引力系统。在一个标准中同时使用两套独立的英寸磅单位在科学上是不可取的。如前所述，本标准包括以英寸-磅为单位的重力系统，不使用/表示段塞质量单位。但是，使用天平和天平记录磅质量（lbf）或以lbm/ft为单位记录密度 3. 不得视为不符合本标准。 1.3 所有观测值和计算值应符合实践中制定的有效数字和四舍五入指南 D6026型 ，除非被本试验方法取代。 1.3.1 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。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 ====意义和用途====== 5.1 轧制侵蚀控制产品旨在保护种子床免受侵蚀，并提供促进种子发芽的环境。通过逐渐释放吸收的水分来维持湿润的环境有助于提供有益的生长环境。产品吸收水分的能力通常是特定的。该测试方法可用于质量控制和确定产品是否符合规范。 5.2 浸没在水中的RECP质量的变化可用于控制许多RECP的质量。浸没在水中的RECP的质量变化尚未被证明与所有材料的现场性能有关。 5.3 浸没在水中的RECP的质量变化可能会根据产品中使用的材料的组成或由于产品内部的不一致性而发生很大变化。这种测试方法能够表征和控制产品的一致性。 5.4 该试验方法可用于确定不同组分材料和RECP组成对浸入水中时质量变化的影响。 5.5 该测试方法可用于RECP商业装运的验收测试。中所述的对比试验 5.6 可能是可取的。 5.6 如果在使用该测试方法进行商业货物验收测试时，由于报告的测试结果存在差异而产生争议，买方和供应商应进行比较测试，以确定其实验室之间是否存在统计偏差。 建议提供适当的统计协助来评估偏差。至少，双方应采取一组尽可能均匀的试样，这些试样由大量相关类型的材料制成。应将试样以相等数量随机分配到每个实验室进行测试。两个实验室的平均结果应使用学生的 吨 -测试未配对的日期和可接受的概率水平由两人选择开始。如果发现偏差，必须纠正其原因，或者买方和供应商必须就已知偏差达成一致。 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 第3740页 通常被认为能够胜任和客观的测试/取样/检查等。本标准的使用者应注意遵守实践 第3740页 其本身不能保证可靠的结果。可靠的结果取决于许多因素；实践 第3740页 提供了评估其中一些因素的方法。

1.1 This test method measures the change in mass of a rolled erosion control product when specimens are submerged in water for a prescribed period of time. The change in mass is reported as a percentage of the original dry mass of the specimen. 1.2 Units— The values stated in either SI units or inch-pound units [given in brackets] are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. Reporting of test results in units other than SI shall not be regarded as nonconformance with this standard. 1.2.1 It is common practice in the engineering/construction profession to concurrently use pounds to represent both a unit of mass (lbm) and of force (lbf). This practice implicitly combines two separate systems of units; that is, the absolute system and the gravitational system. It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single standard. As stated, this standard includes the gravitational system of inch-pound units and does not use/present the slug unit of mass. However, the use of balances and scales recording pounds of mass (lbf) or recording density in lbm/ft 3 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 , unless superseded by this test method. 1.3.1 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. 1.4 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 Rolled erosion control products are intended to protect seed beds from erosion and provide an environment that encourages seed germination. Maintaining a moist environment by gradually releasing absorbed moisture helps provide a beneficial growth environment. The ability of a product to absorb moisture is commonly specified. This test method can be used for quality control and to determine product conformance to a specification. 5.2 Change in mass of RECPs submerged in water may be used to control the quality of many RECPs. Change in mass of RECPs submerged in water has not been proven to relate to field performance for all materials. 5.3 The change in mass of RECPs submerged in water may vary considerably depending on the composition of the materials used in the product or due to inconsistency within the product. This test method enables the characterization and control of product consistency. 5.4 This test method may be used to determine the effect of different component materials and makeup of RECPs on the change in mass when submerged in water. 5.5 This test method may be used for acceptance testing of commercial shipments of RECPs. Comparative tests as directed in 5.6 may be advisable. 5.6 In case of a dispute arising from differences in reported test results when using this test method for acceptance testing of commercial shipments, the purchaser and the supplier shall conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the evaluation of bias. As a minimum, the two parties shall take a group of test specimens that are as homogeneous as possible and that are formed from a lot of material of the type in question. The test specimens shall be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories shall be compared using Student’s t -test for unpaired date and an acceptable probability level chosen by the two begun. If bias is found, either its cause must be corrected, or the purchaser and supplier must agree upon the known bias. 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.