ASTM G84 在大氣腐蝕測(cè)試中表面暴露在潮濕條件下濕潤(rùn)時(shí)間的測(cè)量

ASTM G84-2020發(fā)行信息

標(biāo)準(zhǔn)號(hào)ASTM G84-2020

中文名 在大氣腐蝕測(cè)試中表面暴露在潮濕條件下濕潤(rùn)時(shí)間的測(cè)量的標(biāo)準(zhǔn)操作規(guī)程

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

發(fā)布日期2020

實(shí)施日期

廢止日期無(wú)

國(guó)際標(biāo)準(zhǔn)分類號(hào)17.040.20 (Properties of surfaces)

發(fā)布單位US-ASTM

ASTM G84-2020適用范圍

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本規(guī)程涵蓋了一種用于監(jiān)測(cè)暴露于產(chǎn)生水分沉積的周期性大氣條件下的表面上的濕潤(rùn)時(shí)間（TOW）的技術(shù)。

1.2本規(guī)程也適用于檢測(cè)和監(jiān)測(cè)墻壁或屋頂組件內(nèi)以及試驗(yàn)裝置內(nèi)的冷凝。

1.3如果測(cè)量TOW以與其他現(xiàn)場(chǎng)進(jìn)行比較，尤其是如果該數(shù)據(jù)與其他現(xiàn)場(chǎng)特定儀器技術(shù)結(jié)合使用，則可顯著增強(qiáng)暴露現(xiàn)場(chǎng)校準(zhǔn)或表征。

1.4以國(guó)際單位制表示的數(shù)值應(yīng)視為標(biāo)準(zhǔn)值。本標(biāo)準(zhǔn)不包括其他計(jì)量單位。

1.5本標(biāo)準(zhǔn)并非旨在解決與其使用相關(guān)的所有安全問題（如有）。本標(biāo)準(zhǔn)的使用者有責(zé)任在使用前建立適當(dāng)?shù)陌踩⒔】岛铜h(huán)境實(shí)踐，并確定監(jiān)管限制的適用性。

1.6本國(guó)際標(biāo)準(zhǔn)是根據(jù)世界貿(mào)易組織技術(shù)性貿(mào)易壁壘（TBT）委員會(huì)發(fā)布的《關(guān)于制定國(guó)際標(biāo)準(zhǔn)、指南和建議的原則的決定》中確立的國(guó)際公認(rèn)標(biāo)準(zhǔn)化原則制定的。