AASHTO T 318-15 (2019) PDF Download

The AASHTO T 318-15 (2019) standard describes a method for measuring the total water content of fresh concrete. This method involves drying a test specimen of fresh concrete using a microwave oven with relatively high power in a short period of time. By measuring the difference in mass between the fresh and dry concrete test specimen, the water content of the specimen can be determined.

The standard also mentions that the water content per unit volume of concrete can be calculated by determining the unit weight of the concrete, which can be done in accordance with other specified standards. The AASHTO T 318-15 (2019) standard is applicable for both laboratory and field testing, providing a standardized method for determining the water content of freshly mixed concrete.