AASHTO T 185-21 PDF Download

The AASHTO T 185-21 standard provides a method for determining the early stiffening properties of hydraulic cement mortar. This standard is specifically designed to assess the time it takes for the mortar to reach a certain level of stiffness after mixing.

The test method described in the standard involves preparing a mortar sample using a specified water-to-cement ratio and conducting a series of measurements at specific time intervals. These measurements include determining the change in penetration resistance of the mortar using a penetrometer and the change in flow consistency using a flow table.

The results obtained from this test can be used to evaluate the early stiffening characteristics of hydraulic cement mortar. This information can be valuable in the construction industry, as it helps ensure that the mortar is adequately stiffened before it is used for various applications, such as masonry work or concrete repairs.