1.1 该试验方法包括通过对从混凝土混合物中筛出的砂浆进行抗渗透性测量，确定坍落度大于零的混凝土的凝固时间。 1.2 只有当砂浆部分的测试能够提供所需的信息时，才适合使用该测试方法。 1.3 该试验方法也可用于制备的砂浆和灌浆。 1.4 该试验方法适用于受控的实验室条件以及现场条件。 1.5 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值可能不是完全相等的； 因此，每个系统应独立使用。将两个系统的值合并可能导致不符合标准。 1.6 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）不应被视为本标准的要求。 1.7 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 1.8 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 由于混凝土的凝结是一个渐进的过程，任何凝结时间的定义都必须是任意的。在该试验方法中，砂浆达到规定抗渗透性值所需的时间用于确定凝固时间。 5.2 该测试方法可用于确定变量的影响，如含水量； 胶结材料的品牌、类型和数量；或外加剂。该试验方法也可用于确定是否符合规定的设置时间要求。 5.3 该试验方法也可用于制备的砂浆和灌浆。然而，当需要混凝土的凝固时间时，应在从混凝土混合物中筛出的砂浆上进行试验，而不是在准备好的砂浆上，以模拟混凝土的砂浆分数；已经表明，当使用所制备的砂浆时，初凝和终凝时间可以增加。

1.1 This test method covers the determination of the time of setting of concrete, with slump greater than zero, by means of penetration resistance measurements on mortar sieved from the concrete mixture. 1.2 This test method is suitable for use only when tests of the mortar fraction will provide the information required. 1.3 This test method may also be applied to prepared mortars and grouts. 1.4 This test method is applicable under controlled laboratory conditions, as well as under field conditions. 1.5 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. 1.6 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 the standard. 1.7 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. 1.8 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 Since the setting of concrete is a gradual process, any definition of time of setting must necessarily be arbitrary. In this test method, the times required for the mortar to reach specified values of resistance to penetration are used to define times of setting. 5.2 This test method can be used to determine the effects of variables, such as water content; brand, type and amount of cementitious material; or admixtures, upon the time of setting of concrete. This test method may also be used to determine compliance with specified time-of-setting requirements. 5.3 This test method may also be applied to prepared mortars and grouts. However, when the setting time of concrete is desired, the test shall be performed on mortar sieved from the concrete mixture and not on a prepared mortar intended to simulate the mortar fraction of the concrete; it has been shown that the initial and final setting times may be increased when using the prepared mortar.