ASTM G84-2020测试标准

ASTM G84 在大气腐蚀测试中表面暴露在潮湿条件下湿润时间的测量

ASTM G84-2020发行信息

标准号ASTM G84-2020

中文名 在大气腐蚀测试中表面暴露在潮湿条件下湿润时间的测量的标准操作规程

英文名 Standard Practice for Measurement of Time-of-Wetness on Surfaces Exposed to Wetting Conditions as in Atmospheric Corrosion Testing

发布日期2020

实施日期

废止日期无

国际标准分类号17.040.20 (Properties of surfaces)

发布单位US-ASTM

ASTM G84-2020适用范围

1.1 This practice covers a technique for monitoring time-of-wetness (TOW) on surfaces exposed to cyclic atmospheric conditions which produce depositions of moisture.

1.2 The practice is also applicable for detecting and monitoring condensation within a wall or roof assembly and in test apparatus.

1.3 Exposure site calibration or characterization can be significantly enhanced if TOW is measured for comparison with other sites, particularly if this data is used in conjunction with other site-specific instrumentation techniques.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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.

1.1本规程涵盖了一种用于监测暴露于产生水分沉积的周期性大气条件下的表面上的湿润时间（TOW）的技术。

1.2本规程也适用于检测和监测墙壁或屋顶组件内以及试验装置内的冷凝。

1.3如果测量TOW以与其他现场进行比较，尤其是如果该数据与其他现场特定仪器技术结合使用，则可显著增强暴露现场校准或表征。

1.4以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。

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（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。