After completing the final rolling of the Portland Cement Treated Plant Mix Base Course, what is the rate of application for the bituminous curing seal?

The rate of application for a bituminous curing seal after completing the final rolling of the Portland Cement Treated Plant Mix Base Course is vital for maintaining moisture and ensuring proper curing of the base layer. The range of 0.5 L/m² to 1.0 L/m² is appropriate because it provides sufficient coverage to aid in curing without over-application, which could lead to issues such as bleeding or inadequate bonding with subsequent layers.

This range strikes a balance between being effective for moisture retention and not wasting material. Option B is consistent with industry standards for curing treatments, ensuring that the underlying cement-treated layer can achieve optimal hardness and strength. By applying within this specified range, the material properties are enhanced while also preventing future performance issues associated with improper curing.

Other options represent application rates that are either too high or too low, which would not support the intended benefits of the curing process effectively—hence why they would not be suitable choices.