1.1 本规程涵盖粗骨料和细骨料的取样，目的如下: 1.1.1 潜在供应源的初步调查， 1.1.2 在供应源控制产品， 1.1.3 使用现场的操作控制，以及 1.1.4 材料的验收或拒收。 注1: 抽样计划、验收和控制测试因使用材料的施工类型而异。 1.2 本标准的文本引用了提供解释材料的注释和脚注。这些注释和脚注（不包括表和图中的注释和脚注）不应视为本标准的要求。 1.3 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准。 注2: 本标准产生的结果质量取决于执行程序的人员的能力以及所用设备的能力、校准和维护。符合规范标准的机构 D3666 通常认为能够胜任和客观的测试、抽样、检查等。本标准的用户应注意遵守规范 D3666 单独使用并不能完全确保可靠的结果。可靠的结果取决于许多因素；遵循规范建议 D3666 或一些类似的可接受指南提供了评估和控制其中一些因素的方法。 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====== 4.1 采样与测试同等重要，采样器应采取一切预防措施，以获取能够显示其所代表材料性质和状况的样本。 4.2 初步调查测试的样品由负责潜在源开发的一方获得( 附注3 ). 制造商、承包商或负责完成工程的其他方获取用于控制源头生产或现场工程控制的材料样品。买方或其授权代表获取用于买方验收或拒收决定的测试样品。 注3: 潜在骨料来源和类型的初步调查和取样在确定进入施工的最大单一成分的可用性和适用性方面占有非常重要的地位。 它从经济角度影响施工类型，并从骨料角度控制必要的材料控制，以确保最终结构的耐久性。该调查只能由负责、受过培训且经验丰富的人员进行。有关更全面的指导，请参阅附录。

1.1 This practice covers sampling of coarse and fine aggregates for the following purposes: 1.1.1 Preliminary investigation of the potential source of supply, 1.1.2 Control of the product at the source of supply, 1.1.3 Control of the operations at the site of use, and 1.1.4 Acceptance or rejection of the materials. Note 1: Sampling plans and acceptance and control tests vary with the type of construction in which the material is used. 1.2 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.3 The values stated in either SI units or inch-pound units 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. Note 2: The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used. Agencies that meet the criteria of Specification D3666 are generally considered capable of competent and objective testing, sampling, inspection, etc. Users of this standard are cautioned that compliance with Specification D3666 alone does not completely ensure reliable results. Reliable results depend on many factors; following the suggestions of Specification D3666 or some similar acceptable guideline provides a means of evaluating and controlling some of those factors. 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 ====== 4.1 Sampling is equally as important as the testing, and the sampler shall use every precaution to obtain samples that will show the nature and condition of the materials which they represent. 4.2 Samples for preliminary investigation tests are obtained by the party responsible for development of the potential source ( Note 3 ). Samples of materials for control of the production at the source or control of the work at the site of use are obtained by the manufacturer, contractor, or other parties responsible for accomplishing the work. Samples for tests to be used in acceptance or rejection decisions by the purchaser are obtained by the purchaser or his authorized representative. Note 3: The preliminary investigation and sampling of potential aggregate sources and types occupies a very important place in determining the availability and suitability of the largest single constituent entering into the construction. It influences the type of construction from the standpoint of economics and governs the necessary material control to ensure durability of the resulting structure, from the aggregate standpoint. This investigation should be done only by a responsible, trained, and experienced person. For more comprehensive guidance, see the appendixes.