1.1 本规程涵盖了用于各种试验的岩石板的制备以及用于评估岩石耐久性以进行侵蚀控制的任何目视检查。这些测试包括但不限于测试方法 D5240/D5240M , D5312/D5312M 和 D5313/D5313M . 本规程适用于防波堤石、护面石、抛石和石笼大小的岩石材料的评估。 1.2 单位- 以国际单位制表示的数值应视为标准值。括号中的英寸-磅单位仅供参考。 1.3 所有观察和测量值应符合实践中制定的有效数字和舍入准则 D6026 ，除非被本标准取代。 1.4 本实践提供了一组用于执行一个或多个特定操作的说明。本文件不能取代教育或经验，应与专业判断一起使用。并非本惯例的所有方面都适用于所有情况。 本ASTM标准不代表或取代必须根据其判断给定专业服务的充分性的谨慎标准，也不应在不考虑项目的许多独特方面的情况下应用本文件。本文件标题中的“标准”一词仅表示该文件已通过ASTM共识程序获得批准。 1.5 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。 有关具体的危险声明，请参阅第节 7. . 1.6 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====== 4.1 本规程用于制备岩石样本以进行耐久性测试，并评估任何内部缺陷，例如破裂岩石块表面上可能不明显的裂缝。此类评估还可以帮助选择和定位实践中概述的测试板 D4992 . 在某些情况下，可能不需要进一步测试或评估。 4.2 岩石样品的锯切将使其减少到合适的试样尺寸和数量，以便进行测试，并且在许多情况下，保留内部缺陷的自然结构，因此可以通过各种耐久性测试对样品进行评估。 4.3 耐久性试验试样的厚度应为65±5 mm（2.5±0.25 in），垂直于垫层或样品中可能观察到的任何潜在薄弱面。在任何情况下，板的尺寸都不得小于125 mm（5 In.）另一方面，理想情况下，不包括厚度，等于拟议设计尺寸的试样尺寸将提供实验室测试和实际现场性能之间的最终相关性。 然而，在大多数情况下，这既不实际，也不经济可行。 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 This practice covers the preparation of rock slabs for various tests and any visual inspections used to evaluate the durability of rock for erosion control. These tests include, but are not limited to, Test Methods D5240/D5240M , D5312/D5312M , and D5313/D5313M . This practice is appropriate for the assessment of breakwater stone, armor stone, riprap, and gabion sized rock materials. 1.2 Units— The values stated in SI units are to be regarded as standard. The inch-pound units given in parentheses are for information only. 1.3 All observed and measured values shall conform to the guidelines for significant digits and rounding established in Practice D6026 , unless superseded by this standard. 1.4 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project's many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process. 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. For a specific hazards statement, see Section 7 . 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. ====== Significance And Use ====== 4.1 This practice is used to prepare rock specimens for durability testing and to evaluate any internal defects, such as cracks, that may not be apparent on the surfaces of broken blocks of rock. Such evaluation can also aid in the selection and location of slabs for testing as outlined in Practice D4992 . In some cases, the need for further testing or evaluation may be eliminated. 4.2 The sawing of rock samples will reduce them to a suitable specimen size and quantity for testing and, in many cases, preserve the natural structure of the internal defects so the samples can be evaluated by the various durability tests. 4.3 Durability tests specimens should be 65 ± 5 mm (2.5 ± 0.25 in) thick normal to bedding or any potential planes of weakness which may be observed in the samples. In no case will the size of the slab be less than 125 mm (5 in.) on a side, excluding the thickness Ideally, a test specimen size equal to the proposed design size would provide the ultimate in correlation between laboratory tests and actual field performance. However, in most cases, this is neither practical nor economically feasible. Note 1: The quality of the result produced by this standard is dependent upon 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 evaluation some of those factors.