"It would be appropriate to look at (building) expressways with cement, concrete as these will be greenfield projects," Nath told reporters.
He said concrete can also be used on roads, where wear and tear is high. However, cement would not be used for upgrading the existing bitumen roads.
"We are not going to use cement where there are bitumen roads already," he said.
Nath also said he has called a meeting of all state Transport Ministers next month to look at amending the Motor Vehicles Act, 1988, though he did not give specifics of the draft amendments.
The Act defines norms for speed limits and permissible loads that trucks can carry, among others.
He was speaking at a seminar organised by industry chamber CII on Concrete Highway Projects.
