Successful Application of Sea Sand Concrete Composite Reinforcement, New Breakthrough in New Material Industry of Railway Construction Heavy Industry

Recently，During the construction of Hainan Ledong Yinggehai First-Class Fishing Port Road Project，Railway Construction Heavy Industry Electrical Materials Co., Ltd.、Composite reinforcement jointly created by China Railway Construction Port and Navigation Bureau and Hunan University，Has been successfully used in sea sand concrete instead of steel bar。

Compared with ordinary steel bar，And that density of the composite bar is only one fourth of that of the composite bar.，But has its 2.-3 times tensile strength。Insulation due to composite reinforcement、Resistance to chloride corrosion，The method is applied to sea sand concrete and has no corrosion problem.，And that problem of electrochemical corrosion and the like are avoided.，To meet the concrete strength、Durability at the same time，The project reduced the use of river sand.、The cost of raw materials is reduced.、It effectively solves the problem of easy corrosion of sea sand concrete pavement reinforcement.，Good application effect has been obtained.。

Project site

The chloride ion contained in natural sea sand can cause the corrosion of steel bars in traditional concrete，And then lead to concrete cracking.，Yinggehai First-class Fishing Port Road Project is the first time in China to use composite reinforcement.—Application of sea sand concrete in coastal port construction，The corrosion problem of the steel bars in the sea sand concrete can be fundamentally avoided，Meanwhile, the durability of the sea sand concrete is improved。

Pavement slab composite reinforcement net with composite reinforcement as main stressed reinforcement

Railway Construction Heavy Industry Electrical Materials Company in Rail Transit、Marine engineering、Road works、In the field of construction engineering, the popularization and application of composite reinforcement products have been realized in combination with construction methods and project requirements.。The successful application of sea sand concrete reinforced with composite bars has played a good demonstration role for the replacement of steel bars with composite bars in a wider ran，It opens up a new breakthrough direction for the restricted exploitation of river sand.，It provides a new raw material base for coastal engineering construction materials.，It broadens the application ideas of new materials in engineering industry.。

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