Which binder type is noted as not being PG 62-22?

The correct answer represents a binder type that does not meet the criteria associated with PG 62-22. In the Performance Graded (PG) binder system, the first number indicates the maximum pavement temperature (in degrees Celsius) at which the binder is designed to perform. The second number indicates the minimum temperature.

In this case, PG 62-22 is calibrated to perform at a maximum of 62°C and a minimum of -22°C. Among the given choices, PG 52-28 has a lower maximum temperature rating of 52°C, which inherently disqualifies it from being classified as PG 62-22. This means PG 52-28 is intended for regions or applications with lower thermal demands, thus making it an inappropriate match for the specifications of PG 62-22.

The other binder types (PG 70-22, PG 58-28, and PG 64-22) have maximum temperatures equal to or higher than 62°C, allowing them to be classified distinctly from PG 62-22. By selecting PG 52-28, you are accurately identifying a binder type that falls outside the properties and performance temperature ranges associated with PG 62-22, thus making it the correct choice.