ISO 6274:1982 PDF Download

ISO 6274:1982 is a standard that outlines the procedure for conducting a sieve analysis of aggregates used in concrete. The purpose of this standard is to determine the particle size distribution of normal weight aggregates. The standard provides guidelines for various stages of the process, including sampling, apparatus, preparation of test samples, sieving, calculation, and reporting the results.

The standard emphasizes the use of test sieves to separate the aggregates into different size fractions. Sampling is an important step to ensure that the test accurately represents the aggregate being used in concrete. The apparatus required for conducting the sieve analysis is specified in the standard.

The procedure involves preparing a test sample by reducing the aggregate to an appropriate size and thoroughly mixing it. The test sample is then sieved using a set of standard sieves, and the retained weight on each sieve is measured. The particle size distribution is determined based on the weights retained on different sieves.

Calculation of the results is done according to the standard's instructions, and a test report is generated to document the findings. This standard provides a systematic and reliable method for assessing the particle size distribution of aggregates, which is crucial for ensuring the quality and consistency of concrete.