1.1 本试验方法包括估算现场和实验室混凝土中未涂覆钢筋的电腐蚀电位，以确定钢筋的腐蚀活性。 1.2 该测试方法受到电路的限制。建筑物内部和沙漠环境中的混凝土表面失去了足够的水分，因此混凝土电阻率变得非常高，因此可能需要本测试方法中未涵盖的特殊测试技术（见 5.1.4.1 ). 涂有密封剂或经密封剂处理的混凝土表面可能无法提供可接受的电路。电路的基本配置如所示 图1 . 1.3 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 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和健康实践，并确定监管限制的适用性。 ====意义和用途====== 4.1 该测试方法适用于在役评估和研发工作。 4.2 本试验方法适用于构件，无论其尺寸或钢筋上混凝土保护层的深度如何。 混凝土保护层超过3英寸。（75 mm）可能导致相邻钢筋腐蚀电位的平均值，从而导致丧失辨别相对腐蚀活性变化的能力。 4.3 该试验方法可在混凝土构件寿命期间的任何时间使用。 4.4 通过使用本试验方法获得的结果不应被视为评估钢或钢筋混凝土构件结构性能的手段。 4.5 潜在测量值应由在混凝土材料和腐蚀测试领域有经验的工程师或技术专家进行解释。除腐蚀电位测量外，通常有必要使用其他数据，如氯化物含量、碳化深度、分层调查结果、腐蚀速率结果和环境暴露条件，以得出有关嵌入式钢的腐蚀活性及其对结构使用寿命的可能影响的结论。

1.1 This test method covers the estimation of the electrical corrosion potential of uncoated reinforcing steel in field and laboratory concrete, for the purpose of determining the corrosion activity of the reinforcing steel. 1.2 This test method is limited by electrical circuitry. Concrete surface in building interiors and desert environments lose sufficient moisture so that the concrete resistivity becomes so high that special testing techniques not covered in this test method may be required (see 5.1.4.1 ). Concrete surfaces that are coated or treated with sealers may not provide an acceptable electrical circuit. The basic configuration of the electrical circuit is shown in Fig. 1 . 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== 4.1 This test method is suitable for in-service evaluation and for use in research and development work. 4.2 This test method is applicable to members regardless of their size or the depth of concrete cover over the reinforcing steel. Concrete cover in excess of 3 in. (75 mm) can result in an averaging of adjacent reinforcement corrosion potentials that can result in a loss of the ability to discriminate variation in relative corrosion activity. 4.3 This test method may be used at any time during the life of a concrete member. 4.4 The results obtained by the use of this test method shall not be considered as a means for estimating the structural properties of the steel or of the reinforced concrete member. 4.5 The potential measurements should be interpreted by engineers or technical specialists experienced in the fields of concrete materials and corrosion testing. It is often necessary to use other data such as chloride contents, depth of carbonation, delamination survey findings, rate of corrosion results, and environmental exposure conditions, in addition to corrosion potential measurements, to formulate conclusions concerning corrosion activity of embedded steel and its probable effect on the service life of a structure.