AS 1012.25.1:2020 PDF
This Standard sets out the method for determining the fibre content of concrete that is in the plastic state, by using a wash-out process.
A sample is taken from a concrete load, or from concrete made in the laboratory and compacted into a measure of known volume. The steel or synthetic fibres are washed out, separated and dried. The fibre content is determined from the mass of fibre and the measured volume of concrete.