AS 1012.8.4:2015 PDF Download

The AS 1012.8.4:2015 standard outlines a standardized procedure for preparing concrete drying shrinkage specimens. The standard applies to specimens prepared both in the laboratory and in the field, as long as the nominal size of the aggregate in the concrete does not exceed 40 mm according to AS 2758.1.

The purpose of this standard is to establish a consistent and reliable method for preparing drying shrinkage specimens in order to accurately assess the shrinkage characteristics of concrete materials. By following this standard, the prepared specimens can be used for conducting drying shrinkage tests, which are crucial for evaluating the potential volume reduction and development of cracks in concrete structures over time.

The emphasis on the nominal size of aggregate in the concrete is important, as it ensures that the specimens used for testing are representative of the actual concrete mixtures commonly employed in construction projects. This standard promotes adherence to specific guidelines and procedures, thereby helping to improve the accuracy and comparability of drying shrinkage test results across different laboratories or field locations. Compliance with the AS 1012.8.4:2015 standard ensures that the drying shrinkage specimens are prepared in a consistent and reliable manner, contributing to a more comprehensive understanding of concrete's behavior and performance.