1.1 本试验方法涵盖评估炭黑在含碳量小于5%的聚烯烃土工合成材料中分散的设备、试样制备技术和程序 % 按重量计的炭黑。 1.2 本试验方法允许对聚烯烃土工合成材料中的炭黑团聚体和其他夹杂物进行定性评估。该评估基于微观视野内炭黑分散尺寸的计算面积。 1.3 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 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。 注1: 本试验方法用于评估炭黑分散性。本试验方法不支持或评估炭黑的分布。 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 炭黑被添加到许多聚合物中，以提供对紫外线诱导降解的长期耐受性。为了实现这一点，炭黑应均匀地分散在已制造的土工合成材料中。 本试验方法用于评估炭黑分散的均匀性。 5.2 本试验方法仅适用于可使用旋转切片机或雪橇切片机进行取样的土工合成材料。由于某些土工合成产品的几何形状、刚度（硬度）或弹性，无法使用微型切片机对其进行采样。土工合成材料的横截面积必须由连续的固体聚烯烃材料组成，并使用切片机进行取样。 5.3 挤压和定向土工格栅需要从单轴产品的无定向棒和双轴产品的无定向节点上切割切片机样本。

1.1 This test method covers equipment, specimen preparation techniques, and procedures for evaluating the dispersion of carbon black in polyolefin geosynthetics containing less than 5 % carbon black by weight. 1.2 This test method allows for a qualitative evaluation of carbon black agglomerates and other inclusions in polyolefin geosynthetics. This evaluation is based on carbon black dispersion size calculated area within microscopic fields of view. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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. Note 1: This test method is for the evaluation of carbon black dispersion. This test method does not support or evaluate the distribution of carbon black. 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 Carbon black is added to many polymers to provide long-term resistance to ultraviolet-induced degradation. To achieve this, carbon black should be dispersed uniformly throughout the as-manufactured geosynthetic material. This test method is used to evaluate the uniformity of carbon black dispersion. 5.2 This test method is suitable only for those geosynthetics that can be sampled using a rotary or sledge microtome. The geometry, stiffness (hardness), or elasticity of some geosynthetic products precludes their being sampled with a micro-tome. The cross-sectional area of the geosynthetic must be composed of a continuous solid polyolefin material to be sampled using a microtome. 5.3 Extruded and oriented geogrids will require that microtome specimens be cut from the non-oriented bars of uniaxial products and the non-oriented nodes of biaxial products.