| 摘要 |
Seam sealer for sealing seams in an asphalt paving operation has electric heaters and heats a seam area that encompasses an overlap area of freshly laid and previously laid asphalt. A temperature sensor senses temperature of the seam area. A control system adjusts energy level supplied to the heaters, to obtain a pre-determined temperature on the road surface. The pre-determined temperature is close to the temperature of the fresh hot asphalt to be applied. The seam sealer may travel directly behind the asphalt paver or in front of the paver. If traveling behind the paver, the seam sealer is mounted on a specially modified vehicle having rollers, instead of wheels. The fresh hot asphalt and the previously laid down asphalt form a molten mass, which is subsequently pressed to a smooth, fused and finished road surface by a road roller. |
