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现行 ASTM D7958/D7958M-17
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Standard Test Method for Evaluation of Performance for FRP Composite Bonded to Concrete Substrate using Beam Test 使用光束测试评估粘结到混凝土基材的FRP复合材料的性能的标准测试方法
发布日期: 2017-08-01
1.1 本试验方法描述了评估粘附在平整混凝土基材上的湿铺或拉挤纤维增强聚合物(FRP)复合系统性能的装置和程序。该测试确定了FRP系统在从弯曲测试的混凝土梁上分离之前可以承受的最大力。在由FRP复合材料、粘合剂和混凝土基材组成的系统中,沿最弱面将发生故障。 1.2 本试验方法用于评估和比较受环境条件影响的FRP系统。本试验方法不用于工作批准或产品鉴定目的。 1.3 本试验方法旨在与粘合剂应用的FRP系统一起使用,并适用于具有任何纤维方向或由FRP复合材料组成的铺层方向组合的FRP系统,尽管试验条件仅考虑平行于梁纵轴方向的力。 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值。每个系统中规定的值不是精确的等价物;因此,每个系统必须相互独立使用。将两个系统的值合并可能会导致不符合标准。 1.4.1 在文本中,英寸-磅单位显示在括号中。 1.5 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。 1.6 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 本试验方法是一种均匀制备和测试标准试样的方法,适用于环境调节,随后用于评估FRP粘结到混凝土系统的性能,并评估和报告结果。 5.2 本试验方法适用于实验室。 5.3 该试验方法在不同环境调节方案下的相同试样上进行的结果比较可用于评估环境暴露对FRP系统粘结性能的影响。
1.1 This test method describes the apparatus and procedure for evaluating the performance of wet lay-up or pultruded Fiber-Reinforced Polymer (FRP) composite systems adhesively bonded to a flat concrete substrate. The test determines the maximum force that an FRP system can bear before detaching from a concrete beam tested in flexure. Failure will occur along the weakest plane within the system composed of the FRP composite, adhesive, and concrete substrate. 1.2 This test method is used for assessment and comparison of FRP systems subject to environmental conditioning. This test method is not intended for job approval or product qualification purposes. 1.3 This test method is intended for use with adhesive-applied FRP systems and is appropriate for use with FRP systems having any fiber orientation or combination of ply orientations comprising the FRP composite, although the test condition only considers forces in the direction parallel to the beam longitudinal axis. 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 are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.4.1 Within the text, the inch-pound units are shown in brackets. 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 ====== 5.1 This test method serves as a means for uniformly preparing and testing standard specimens suitable for being subject to environmental conditioning and subsequently used to evaluate FRP-bonded-to-concrete system performance, and evaluating and reporting the results. 5.2 This test method is intended for use in the laboratory. 5.3 The comparison of results from this test method conducted on identical specimens subject to different environmental conditioning protocols can be used to evaluate the effects of environmental exposure on the bond performance of FRP systems.
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归口单位: D30.10
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