Strengthen school-enterprise cooperation, deepen the integration of production, teaching and research-"new cold supplement" technology achievements landing Hualu company.

On the morning of December 16, 2021, with the roar of machines and based on the technical support of the School of Transportation Engineering of Shandong Jianzhu University, 130 tons of new cold supplements produced by the state-owned enterprise Rongfa Group Hualu Company in Qingdao West Coast New District were officially put into use, successfully solving The difficulties and pain points of winter road maintenance in the new district marked an important breakthrough in deepening industry-university-research cooperation and promoting the industrialization of new materials.

Cold fill material is a kind of high-tech road repair material, which is suitable for repairing various types of road surface layer in any environment. It is widely used in many municipal roads, national and provincial roads and highways in China. Before the advent of this technology, road maintenance usually used hot asphalt mixture to repair road potholes. However, there are certain requirements for the construction temperature of the hot material filling pit. Under the condition of low temperature, the hot material will solidify quickly, lose its ductility, and cannot be paved and compacted. In summer, the repair will increase the use cost and reduce the work efficiency. In view of such problems, cold patch technology came into being.

Although the traditional cold patch asphalt mixture has good construction and workability, it has the limitations of poor adhesion performance and poor water damage resistance, which is prone to loose, fall off and other problems, and has a short service life. In this regard, the School of Transportation Engineering of Shandong Jianzhu University has independently developed a high-performance cold patch mixture, which ensures the performance of the cold patch asphalt mixture by strengthening the adhesion and anti-spalling of the diluted asphalt to the aggregate, solves the previous quality defects and reduces the construction cost. At present, the product is in a leading position in China, and the price is half of that of foreign products of the same quality. There have been 3-year-old mature application cases of site repair such as Xinjiang G216 Road (minus 20 degrees) and G1151 Linyi Section of Rilan Expressway, with broad development space in the future.

The application of asphalt cold supplement is not only a "test field" for industry-university-research cooperation, but also a "new highland" for the transformation of national and provincial highways ". In the next step, Rongfa Group Hualu Company will be market-oriented and cooperate with scientific research institutions such as the School of Transportation Engineering of Shandong Jianzhu University to deepen the construction of a technological innovation system with deep integration of industry, university and research, improve the enterprise's awareness of technological innovation, and let scientific research results take root in the enterprise. Enhance the core competitiveness of enterprises, create high-quality projects with ingenuity, and better serve the urban infrastructure construction of the new area.

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Company address: 388 Wheel Mountain Road, West Coast New District, Qingdao, China

Contact Phone:0532-85160055

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