en.Wedoany.com Reported - At the construction site of the G244 line in Qingyang, Gansu, China, the Swedish Dynapac SD2550CS large-width paver is carrying out 11.5-meter width road paving construction. The G244 line Qingyang transit section is a key ongoing project under Gansu Province's "14th Five-Year Plan," constructed by CCCC First Harbor Engineering Co., Ltd. and implemented by Gansu Yida Highway Engineering Machinery Co., Ltd. Superpave-25 asphalt mixture is used for the binder course construction, with a compacted thickness of 8 centimeters and a single paving width reaching 11.5 meters, achieving two-lane formation in a single pass.
In traditional multi-machine parallel paving construction, longitudinal joints are prone to issues such as temperature segregation and uneven compaction. The SD2550CS paver reduces construction joints and lowers the risk of segregation through its super-large width continuous paving capability. Since April 20, the equipment has been operating continuously, with a single-day paving distance reaching 1.800 kilometers. The stability of material supply, the rigidity of the screed, and the overall construction continuity have provided support for the project's progress.
The SD2550CS paver adopts a reinforced structure screed system, optimizing anti-bending and thermal deformation capabilities, maintaining the straightness stability of the trailing edge under long-duration, heavy-load construction. The equipment is equipped with a paving management control system based on an open CAN-BUS architecture, enabling real-time management of overall machine conditions and construction parameters; the Vario Speed load-adaptive function can automatically adjust the engine speed according to the load.
Large-width single-pass formation reduces the workload of equipment coordination and joint treatment, improving single-day construction efficiency and finished product quality. At the Qingyang project site, the SD2550CS paver demonstrated the requirements for continuity, stability, and precision in high-grade road construction. Dynapac has been deeply engaged in the road construction and maintenance field for over ninety years, addressing construction challenges with systematic technical solutions.
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