ISO 20290-4:2019 混凝土骨料 机械和物理性能试验方法 第4部分：纵向强迫震动（TFV）的测定

标准编号：ISO 20290-4:2019

中文名称：混凝土骨料 机械和物理性能试验方法 第4部分：纵向强迫震动（TFV）的测定

英文名称：Aggregates for concrete — Test methods for mechanical and physical properties — Part 4: Determination of ten percent fines value (TFV)

发布日期：2019-11

标准范围

This document gives the test method for determination of ten percent fines value (TFV) of aggregates. 
This method gives a relative measure of the resistance of the aggregate crushing under the gradually 
applied compressive load.
It covers two sets of procedures:
— the first procedure is applicable for aggregates tested in dry condition; and
— the second procedure is applicable for aggregates tested in a soaked condition.
NOTE 1 Generally, the test can be done under dry conditions. However, the engineer in charge can choose to 
test them in soaked condition, if necessary.
The method is applicable to aggregates of different strengths covering both weak and strong 
aggregates. It is applicable to standards aggregates, i.e. passing a 14,0 mm test sieve and retained on 
10,0 mm test sieve.
National standards can also exist for the aggregate size fraction to be taken for this test. In case 
this definite size fraction is not available, the test can be made on other sizes, given in Annex A. The 
comparison of results of non-standard sizes with standard size aggregates is not possible due to lack of 
available data.
NOTE 2 Minor variations in grading divisions can be allowed in respective national standards.

标准预览图