AASHTO T 277-15 (2019) PDF Download

The AASHTO T 277-15 (2019) standard provides a method for measuring the electrical conductance of concrete. This measurement is used as an indicator of the concrete's resistance to the penetration of chloride ions, which can lead to deterioration and corrosion of reinforcing steel in concrete structures.

The standard specifies that the test method is applicable to various types of concrete, but correlations must be established between this test procedure and more time-consuming chloride ponding procedures, such as those described in T 259. In other words, the electrical conductance measurement is a rapid alternative to long-term chloride ponding tests, providing a quick indication of the concrete's ability to resist chloride ion penetration.

By using this standard, engineers and researchers can assess the durability and performance of concrete structures in regards to chloride ion ingress. With this information, appropriate preventive measures and strategies can be implemented to extend the service life of the concrete and minimize the risk of corrosion-related damage.