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现行 ASTM C939/C939M-22
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Standard Test Method for Flow of Grout for Preplaced-Aggregate Concrete (Flow Cone Method) 预置骨料混凝土用灌浆流动的标准试验方法(流动锥法)
发布日期: 2022-10-01
1.1 本试验方法涵盖了实验室和现场使用的程序,用于确定规定体积的液压水泥浆通过标准流动锥流出的时间,并用于预浇筑骨料(PA)混凝土;然而,该试验方法也可用于其他流体灌浆。 1.2 它适用于纯水泥浆和含有细骨料的水泥浆,所有细骨料均通过2.36 mm(8号)筛。 1.3 本试验方法适用于流出时间不超过35 s的灌浆。 1.4 当流出时间超过35秒时,流动性最好通过试验方法中的流量表确定 109米/109米 ,在3秒内使用5滴。 1.5 以国际单位制或英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效值;因此,为了确保符合标准,每个系统应独立使用,两个系统的值不得组合。有些数值只有国际单位制单位,因为实际上没有使用英寸磅当量( 注1 ). 注1: 筛孔尺寸由规范中的标准名称确定 第11页 括号中给出的备选名称仅供参考,并不代表不同的标准筛号。 1.6 本标准并不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。 1.7 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》中确立的国际公认标准化原则制定的。 =====意义和用途====== 5.1 本试验方法适用于测定各种流体灌浆混合物的流动性。
1.1 This test method covers a procedure, used both in the laboratory and in the field, for determining the time of efflux of a specified volume of fluid hydraulic cement grout through a standardized flow cone and used for preplaced-aggregate (PA) concrete; however, the test method may also be used for other fluid grouts. 1.2 It is for use with neat grout and with grouts containing fine aggregate all passing a 2.36 mm (No. 8) sieve. 1.3 This test method is intended for use with grout having an efflux time of 35 s or less. 1.4 When efflux time exceeds 35 s, flowability is better determined by flow table, found in Test Method C109/C109M , using 5 drops in 3 s. 1.5 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. Some values have only SI units because the inch-pound equivalents are not used in practice ( Note 1 ). Note 1: Sieve size is identified by its standard designation in Specification E11 . The alternative designation given in parentheses is for information only and does not represent a different standard sieve size. 1.6 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. 1.7 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 is applicable to the determination of the fluidity of various fluid grout mixtures.
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归口单位: C09.41
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