At the construction site of Jiaozhou Zhizhi Railway，With a deafening roar.，Transport vehicles shuttle back and forth，A scene in full swing is unfolding.……In order to promote the high-quality development of rural roads in Qingdao，Deepening“Four new”Application and Popularization of Technology in Rural Highway Maintenance，Improve the quality and efficiency of highway maintenance，Qingdao Highway Center Guidance Area（City）Transportation departments improve the level of fine maintenance of highways，Prolong the service life of highway，Gradually break through technical problems，Innovative pavement maintenance materials。

In recent years，Jiaozhou Transportation Bureau Jointly with Construction Enterprises to Innovate Pavement Maintenance Material Allocation Scheme，Research and development of new road and bridge maintenance materials——Carbon steel mortar waterproof and wear-resistant layer，This is an asphalt based material.，By means of special spraying equipment，Under the combined action of the spraying pressure and the gravity of the carbon steel mortar，Suspended compounding to form sand-containing slurry，Spray to the road surface，Permeable curing layer formed。At the same time，Innovating the Comprehensive Surface Treatment Method and Technology of Highway Pavement Maintenance and Pre-maintenance Pavement，It is applied in relevant rural road maintenance projects represented by Zhizhi Railway.，Realizing the regeneration and reduction of the aged asphalt，And that toughness of the asphalt pavement is increase.。

Innovation through maintenance technology，The maintenance work of rural roads has achieved precise closure of small cracks on the road surface.、And that age of the pavement is delayed、Improve the wear resistance and skid resistance of the pavement.，Prolong the service life of pavement by one to three years，To a certain extent, it realizes the snow melting and skid prevention of winter pavement.，And that road surface safety in win is improved.，Safe travel of the people.。

Next step，Qingdao Highway Center will continue to explore“Four new”Application of Technology in Rural Highway Construction and Maintenance，Actively promote new technologies for energy conservation and consumption reduction，Enabling Highway Maintenance with Science and Technology，Constantly enrich the connotation and extension of highway maintenance，Create a more energy-efficient and carbon-reducing“Sihao Rural Road”。

（Peninsula all-media reporter Ma Zhengtuo correspondent Xu Chunli Zhou Chunsheng）