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现行 ASTM D4688/D4688M-14(2021)e1
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Standard Test Method for Evaluating Structural Adhesives for Finger Jointing Lumber 用于评估手指接合木材结构粘合剂的标准测试方法
发布日期: 2021-04-15
1.1 本试验方法旨在评估用于制造各种粘结结构木材产品(如结构胶合层压木材)的指接木材的粘合剂。在以下处理条件下测试接头的抗拉强度:未经处理的干燥、一次真空压力浸泡处理后的湿润和循环沸腾干燥处理后的湿润。 1.2 本试验方法既不是为了质量控制,因为选择试验组件是为了不存在通常在未加工指状接头中发现的缺陷,也不是为了替代端部接头的厂内鉴定,包括全尺寸接头试验。 注1: 本试验方法专门用于使用从精心挑选的指接组件上切下的小尺寸试样来评估指接木材中使用的粘合剂。相反,工厂资质和质量控制要求对从生产中随机选择的全尺寸端部接头进行测试,旨在评估影响最终使用产品性能的粘合剂性能以外的参数。 1.3 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不一定是精确的等价物;因此,为确保符合本标准,每个系统应独立使用,且两个系统的值不得组合。 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====== 4.1 本试验方法专门用于测量在生产线条件下制造的手指接头中粘合剂的性能。 4.1.1 该试验方法可适用于评估实验室生产的手指接头的粘接性能,使用商业手指接头切割头,手指接头按照粘合剂制造商的建议生产。手指关节产生的条件,包括任何限制,将在中报告 9.1.2.2 (参见 注释2 ). 注2: 如果要生产实验室制备的手指接头,请记录与所用粘合剂、其制备、切割手指接头的应用、适当的粘接参数和手指接头组件生产中的限制有关的详细信息。 4.2 试验方法的结果可用于证明粘合剂适用于生产线条件下的指接木材,其中指接木材的预期最终用途可能在各种粘合结构木材产品中。 4.2.1 当测试结果用于认证粘合剂时,应使用标准木材品种。 4.2.1.1 标准物种可在规范表1中找到 D2559 .
1.1 This test method is designed to evaluate adhesives for finger jointing lumber used in the manufacture of a variety of bonded structural wood products such as structural glued laminated timber. It tests the tensile strength of joints under the following treatments: dry with no treatment, wet after one vacuum-pressure soak treatment, and wet after cyclic boil-dry treatment. 1.2 This test method is intended neither for quality control as the test assemblies are selected for the absence of defects usually found in run-of-the-mill finger joints nor as a substitute for in-plant qualification of end joints, including full-scale joint tests. Note 1: This test method is specifically designed to evaluate adhesives for use in finger jointing lumber using small scale test specimens cut from carefully selected finger joint assemblies. In contrast, plant qualification and quality control require tests of full scale end joints selected randomly from production, designed to evaluate parameters beyond adhesive performance which affect the performance of the end use product. 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 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 ====== 4.1 This test method is specifically designed to measure the performance of adhesives in finger joints manufactured under production line conditions. 4.1.1 The test method can be adapted to evaluate the adhesive performance of laboratory produced finger joints using commercial finger joint cutting heads with finger joints produced following the adhesive manufacturers recommendations. The conditions under which the finger joints were produced, including any limitations, are to be reported in 9.1.2.2 (see Note 2 ). Note 2: If laboratory prepared finger joints are to be produced, record details related to adhesive used, its preparation, application to the cut finger joint, appropriate bonding parameters and limitations in the production of the finger joint assemblies. 4.2 The results of the test method may be used to certify an adhesive as suitable for finger jointing lumber under production line conditions where the intended end use of the finger jointed lumber may be in a variety of bonded structural wood products. 4.2.1 When the test results are to be used for certification of an adhesive a standard wood species shall be used. 4.2.1.1 Standard species may be found in Table 1 of Specification D2559 .
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归口单位: D14.30
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