Which is better for Nigerian roads: asphalt or concrete?
Nigeria’s new works minister, David Umahi, is pushing for the use of rigid pavement in road construction, as against the flexible pavement predominantly in use.
Nigeria’s new works minister, David Umahi, is pushing for the use of rigid pavement in road construction, as against the flexible pavement predominantly in use.
Up to 8% of all global anthropogenic human-made emissions are due to just one material, cement. And our use of it is rising.