AS 1012.18:1996 (R2014) PDF Download

AS 1012.18:1996 (R2014) is a standard that outlines the methods for testing the setting time of fresh concrete, mortar, and grout using penetration resistance. The standard specifies the procedure for determining both the initial and final setting times of mortar obtained from fresh concrete mixes with a non-zero slump. It emphasizes the use of penetration resistance needles for this purpose.

The standard provides several important notes. Firstly, it acknowledges that the hardening of concrete is a gradual process and, therefore, any definition of setting time must be arbitrary. Secondly, it states that the primary purpose of this method is to compare setting times under the same laboratory conditions. Additionally, the method can be used to determine the setting characteristics at a standard temperature, such as 23 ¦2¦C, or at other specified temperatures. Lastly, the method can also be employed to estimate setting times of specific concretes, mortars, or grouts in the field.