UNE 80-262-1987 Chemical analysis and test methods of cement: determination of fly ash content (by means of selective dilution method) (standard method)
The purpose of this standard is to describe a test method to determine the content of coal fly ash, or with a similar composition, in three-component cements (clinker, setting regulator and fly ash). NOTES: 1 When the cement has filler in quantities equal to or less than 5%, an additional error is made between —3 and +5% of the result obtained. For a given filler this error is systematic. 2 This standard will be reviewed when the corresponding CEN standard comes into force.