The roads in the outback of Brazil are gravel, mostly, and occasionally oiled gravel. In the rainy season, many of them turn to soup. Most of the population in Brazil lives along the Atlantic coast. There are roads that connect the inland cities,and these are the ones that are unpaved. There are bus lines that use these roads, even though they are unpaved. The rivers are used for much of the freight.
Highways in South America are asphalt, not cement. There are very few cement roads in Argentina, Uruguay or Paraguay. Asphalt or macadam roads are the standard. Concrete is best for places that freeze, but nowhere in Brazil, Uruguay or most of Argentina freezes. Brazil is a tropical country.
There is a market for cement, as they use it for buildings. They also make a sort of red clay brick the size of cement blocks that is used for construction.
