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Concrete versus asphalt for roads: Which is better for Africa?

Ongoing construction of a tarmac road. [File, Standard]

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. This, as the minister noted, is due to the precarious state of flexible pavements in the country.

A rigid pavement is a road surface overlaid with reinforced concrete, while a flexible or asphalt one has a bituminous (tar) overlay.

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