ISO 20290-3:2019 混凝土骨料 机械和物理性能试验方法 第3部分：集料破碎值（ACV）的测定

标准编号：ISO 20290-3:2019

中文名称：混凝土骨料 机械和物理性能试验方法 第3部分：集料破碎值（ACV）的测定

英文名称：Aggregates for concrete — Test methods for mechanical and physical properties — Part 3: Determination of aggregate crushing value (ACV)

发布日期：2019-11

标准范围

本文件给出了骨料压碎值（ACV）的测定方法。这给出了在逐渐施加的压缩荷载下骨料破碎阻力的相对测量值。该方法适用于通过14.0 mm试验筛并保留在10.0 mm试验筛上的骨料。对于其他粒级，附录a中描述了推荐的方法。本试验所采用的骨料粒级也可符合相关国家标准。注:在各自的国家标准中，等级划分允许有微小变化。该方法不适用于测试骨料压碎值高于30的骨料。在这种情况下，ISO 20290-4中描述的方法适用。

This document gives the determination of aggregate crushing value (ACV) of aggregates. This gives a relative measure of the resistance of the aggregate crushing under the gradually applied compressive load.The method is applicable to aggregates passing a 14,0 mm test sieve and retained on a 10,0 mm test sieve. For other size fractions, a recommended method is described in Annex A. The aggregate size fraction taken for this test can also be as per the relevant national standards.NOTE Minor variations in grading divisions can be allowed in respective national standards.The method is not suitable for testing aggregates with an aggregate crushing value higher than 30. In such cases, the method described in ISO 20290-4 is applicable.

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