Abstract: A road paver includes: a head; a body including a front end and a tail end; a feeding device, disposed in the front end to convey polyurethane concrete, and the feeding device including a stirring device; a stone paving device, disposed on the tail end to spread crushed stone over a road, and the stone paving device including a stone feed bin carrying the crushed stone; and a concrete paving device, disposed between the feeding device and the stone paving device and connected to the stirring device, and used to spread the polyurethane concrete across the road.

Abstract: A device for fatigue test includes a sample-laying part, a sample support, and a force-applying part. The sample-laying part is disposed on the sample support; and the force-applying part is disposed on the sample-laying part; the sample-laying part includes a substrate plate and at least two arms disposed on the substrate plate; the sample support includes a bed plate and at least four roller assemblies disposed on the bed plate; each roller assembly includes a roller, a roller support, and an adjusting bolt; the roller support is disposed on the bed plate; the roller is disposed on the roller support; the adjusting bolt is disposed between the roller and the roller support; and the sample support further includes at least one barrier, and both ends of the barrier are connected to two adjacent roller supports, respectively.