1.1 这些试验方法涵盖了测量用于外部服务的结构层压木构件抗分层性的加速方法。 1.2 这些试验方法并非旨在替代或替换规范中更严格的抗分层试验 D2559 . 1.3 包括两种测试方法。测试方法的选择取决于测试的目的和完成的可用时间。 1.3.1 试验方法A-- 该测试需要3天才能完成，是一种确定粘合剂和制造技术和设备是否适合生产适用于外部服务的接头的方法。 1.3.2 试验方法B-- 该测试大约需要12个 1. / 2. h.（如果发生过度分层，则重复该循环）。这是一种检查胶接质量的质量控制型式试验。 1.4 以国际单位制表示的值应被视为标准。括号中给出的值仅供参考。 1.5 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、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 该测试适用于检查从常规生产中正确选择的样品的测试，或用于确定粘合剂和粘合技术是否适用于生产用于外部服务的接头。 4.2 根据所涉及的构件总数和测试目的，改变从每个构件中取出的试样数量和选择进行测试的构件数量。 然而，建议在测试中至少包括三个试样，选择的试样应代表粘合接头的可能质量范围。 4.3 在严重暴露下，结和打结区域的粘合接头通常不可靠。忽略节点处分层的发展，不包括在测量或计算中。

1.1 These test methods cover an accelerated means of measuring the resistance to delamination of structural laminated wood members intended for exterior service. 1.2 These test methods are not intended as substitutes or replacements for the more severe test of resistance to delamination in Specification D2559 . 1.3 Two test methods are included. Choice of test method depends on purpose of the test and available time to complete. 1.3.1 Test Method A— This test requires 3 days to complete and is a method for determining the suitability of adhesives and manufacturing techniques and equipment for production of joints adequate for exterior service. 1.3.2 Test Method B— This test requires approximately 12 1 / 2 h. (If excessive delamination occurs, the cycle is repeated). It is a quality-control type test for examining adhesive joint quality. 1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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 The test is suitable for check testing properly selected samples from regular production or for determining the suitability of adhesives and bonding techniques for the production of joints for exterior service. 4.2 Vary the number of specimens taken from each member and the number of members selected for test depending on the total number of members involved and the purpose of the tests. It is advisable, however, to include at least three specimens in the test, with the specimens selected to represent the probable range of quality of the adhesive joints. 4.3 Adhesive joints at knots and knotty areas in general are not dependable under severe exposures. Disregard development of delamination at knots and do not include in the measurements or calculations.