1.1 本指南涵盖了一种筛选方法，用于检测结构密封胶玻璃窗、幕墙或其他类似系统中结构密封胶的故障（粘合剂或内聚性）。目前，仅允许将专门配制、测试和销售为结构玻璃密封胶的硅酮密封胶用于结构玻璃密封胶。 1.2 以可接受的公制单位或其他单位表示的值应单独视为标准。每个系统中规定的值可能不是精确的等效值；因此，每个系统必须相互独立使用，不得以任何方式组合值。 1.3 没有与本ASTM标准类似或等效的ISO标准。 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 本指南提出了一种评估已安装结构密封胶玻璃系统中结构密封胶故障程度的简单方法。 5.2 合格机构应规定第节中所述的标准 8. 和 9 并应解释结果，判断其对结构密封胶玻璃系统的意义。 5.3 评估程序测量加载的LITE的挠度，不直接测量任何结构密封胶故障。因此，解释数据的合格机构还应评估测量的任何增加挠度的来源。 挠度增加可能是由于结构密封胶粘合剂或内聚性失效，但也可能是由于密封胶模量降低、密封胶接头尺寸变化或其他非失效机制。对挠度增加的区域进行选择性破坏性采样有助于评估。

1.1 This guide covers a screening approach to detect failure (adhesive or cohesive) of a structural sealant in a structural sealant-glazed window, curtain wall, or other similar system. Presently, only a silicone-sealant that is specifically formulated, tested, and marketed as a structural glazing sealant is allowed for structural sealant glazing. 1.2 The values stated in either acceptable metric units or in other units shall be regarded separately as the standard. The values stated in each system may not be exact equivalents; therefore, each system must be used independently of the other, without combining values in any way. 1.3 There are no ISO standards similar or equivalent to this ASTM 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 guide suggests a simple means of evaluating the extent of any failure of a structural sealant in an installed structural sealant glazing system. 5.2 A qualified authority should specify the criteria described in Sections 8 and 9 and should interpret the results and judge their significance for the structural sealant glazing system. 5.3 The evaluation program measures deflection of loaded lites and does not measure directly any structural sealant failure. Consequently, the qualified authority interpreting the data should also evaluate the source of any increased deflection that is measured. Increased deflection may be due to structural sealant adhesive or cohesive failure, but may also be due to a decrease in sealant modulus, a change in sealant joint dimensions, or other nonfailure mechanisms. Selective destructive sampling of areas with increased deflections can assist in this evaluation.