Why do you want to repair concrete road pavement saws
It is not when sawing, pouring concrete pre isolated, concrete expansion is relatively large, easy to crack in the process of cold expansion on the road tile, you saw the so-called joint is actually the expansion joints, avoid high temperature in summer when the damage of asphalt pavement. In fact, you see what we can know, the asphalt will often muster a package in the innate, but not because of the asphalt pavement toughness was far better than that of cement concrete pavement
The expansion joint, some fixed cut, some casting with something separated, one is to prevent thermal damage of pavement, the two is bad repair, because the cement concrete pavement broken will be a crack extending far
Because any substance has the characteristics of thermal expansion and cold contraction, if the road of tens of kilometers into a piece (especially rigid cement road), then the heating road will be warped and destroyed ha! After sawing can effectively solve this problem. The same goes for railways
