1.1 本试验方法涵盖了通过使用四分之一点荷载的简支梁来确定石材抗弯强度的程序。 1.2 当荷载垂直于垫层平面且荷载平行于垫层平面时，应进行石材试验。 1.3 根据要求，弯曲试验也应在潮湿条件下进行。 1.4 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。 1.5 本标准并不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。 1.6 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====== 4.1 该试验方法可用于指示不同尺寸石头之间的抗弯强度差异。该测试方法还提供了比较相同类型石头的一个要素。

1.1 This test method covers the procedure for determining the flexural strength of stone by use of a simple beam using quarter-point loading. 1.2 Stone tests shall be made when pertinent for the situation when the load is perpendicular to the bedding plane and when the load is parallel to the bedding plane. 1.3 As required, the flexural tests shall also be conducted under wet conditions. 1.4 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. 1.5 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. 1.6 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 This test method is useful in indicating the differences in flexural strength between the various dimension stones. This test method also provides one element in comparing stones of the same type.