ISO DIS 20290-4
Aggregates for concrete - Test methods for mechanical and physical properties - Part 4: Determination of ten per cent fines value (TFV)
|Publication Date:||11 January 2019|
|ICS Code (Concrete and concrete products):||91.100.30|
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 Generally, the test may be done under dry conditions. However, the engineer in charge may choose to test them in soaked condition, if required.
The test can be carried out on aggregates of different strengths covering both weak and strong aggregates.
The test is carried out on a standard size of aggregates, i.e., passing a 14.0 mm test sieve and retained on 10.0 mm test sieve. The aggregate size fraction taken for this test may also be as per relevant national standards. In case this definite size fraction is not available, the test may 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 : Minor variations in grading divisions may be permitted in accordance with the respective national standards.