AS 1012.12.2:1998 (R2014) PDF Download

AS 1012.12.2:1998 (R2014) is a standard that outlines a method for determining the mass per unit volume of hardened concrete using the water displacement method. This method involves weighing the concrete specimen in a specified moisture condition and determining its volume by weighing the saturated specimen in both water and air.

The standard is applicable to both regular and irregular shaped specimens of concrete. It can also be used for capped specimens, as long as the cap's mass per unit volume does not differ from that of the specimen by more than 25 percent and the cap meets the requirements specified in AS 1012.9.

There are a few important notes mentioned in the standard. Firstly, it highlights the importance of ensuring that the specimens used are representative of the concrete mass, especially when irregular shaped pieces are tested. Secondly, it suggests that surface voids should be sealed or wrapped to account for their effect, such as poor compaction.

Lastly, the standard emphasizes the need to follow general procedures and precautions for safety in laboratory operations, as outlined in AS/NZS 2243.1. It also mentions that the standard may involve hazardous materials, operations, and equipment, indicating the importance of handling them with caution.