AS 4489.4.3:1997 (R2016) PDF Download

AS 4489.4.3:1997 (R2016) provides guidelines for determining the soundness of portland cement by measuring its expansion due to lime pastes. The standard outlines the procedure for conducting this test using an autoclave, which subjects the cement specimens to high-pressure steam and temperature conditions.

The purpose of the test is to evaluate the potential for excessive expansion and cracking of the cement when it comes into contact with water or moisture. This is particularly important for construction materials, as excessive expansion can compromise the durability and structural integrity of concrete and other cement-based products.

The standard specifies the dimensions and preparation of the test specimens, as well as the equipment and environmental conditions required for the test. It details the steps to be followed, including the preparation of the lime paste, immersion of the test specimens, and the duration and temperature of the autoclave treatment.

AS 4489.4.3:1997 (R2016) ensures a standardized approach to soundness testing and helps ensure the quality and reliability of portland cement used in various construction applications.