Yes, Portland cement concrete pavement is often more economical in the long term than is asphalt concrete pavement. The asphalt concrete can be quite a bit faster to lay down and open to traffic,...
indeed. In fact, I landed on this question while trying to find a way of getting rid of them since they dug the sand underneath the pavement leaving hollow area in which the blocks eventually fall.
There are 2 reasons for that. Reason one: They can be expansion joints. In the winter the pavement contracts and in the summer it expands. these joints are generally gaps that go the whole way threw...