1.1 本试验方法适用于现场和实验室，以确定以下一项或多项: 1.1.1 基材的近表面抗拉强度，作为应用修补或覆盖材料之前表面处理充分性的指标。 1.1.2 修补或覆盖材料与基材的粘结强度。 1.1.3 修补或覆盖材料，或修补中使用的粘合剂在材料应用于表面后的抗拉强度。 1.2 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。 1.3 本标准的文本是指提供解释性材料的注释和脚注。 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。 1.4 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====== 5.1 本试验方法确定了靠近已处理表面的混凝土的抗拉强度，该强度可作为在应用修补或覆盖材料之前表面处理充分性的指标。 5.2 当在修补或覆盖材料的表面上进行试验时，它确定与基材的粘结强度或覆盖层或基材的抗拉强度，以较弱者为准。 5.3 该方法也可用于评估粘合剂的粘合强度。 5.4 当在应用于基材的材料表面上进行试验时，测量的强度由要求最小应力的失效机制控制。因此，不可能事先知道将通过试验测量哪种强度。因此，必须为每个单独的测试结果报告故障模式，并且仅当出现相同的故障模式时，才对测试结果进行平均。

1.1 This test method is suitable for both field and laboratory use to determine one or more of the following: 1.1.1 The near-surface tensile strength of the substrate as an indicator of the adequacy of surface preparation before application of a repair or overlay material. 1.1.2 The bond strength of a repair or an overlay material to the substrate. 1.1.3 The tensile strength of a repair or overlay material, or an adhesive used in repairs, after the material has been applied to a surface. 1.2 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 non-conformance with the standard. 1.3 The text of this standard refers to notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this 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, 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 This test method determines the tensile strength of concrete near to the prepared surface, which can be used as an indicator of the adequacy of surface preparation before applying a repair or an overlay material. 5.2 When the test is performed on the surface of a repair or an overlay material, it determines the bond strength to the substrate or the tensile strength of either the overlay or substrate, whichever is weaker. 5.3 The method may also be used to evaluate the adhesive strength of bonding agents. 5.4 When the test is performed on the surface of a material applied to the substrate, the measured strength is controlled by the failure mechanism requiring the least stress. Thus it is not possible to know beforehand which strength will be measured by the test. For this reason, the failure mode has to be reported for each individual test result, and tests results are averaged only if the same failure mode occurs.