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China's new style bridge is still the carbon fiber family playing the leading role

Dec. 23, 2017

Many people say that we only introduce carbon fiber cloth. It seems that carbon fiber family has no other product but carbon fiber cloth. Today we will talk about another carbon fiber product  - carbon fiber rib material.

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Aizhai Grand Suspension Bridge is a bridge located in Chongqing to Changsha. It was opened to traffic in March 2012, It has 335 meters from the bridge to the valley bottom. The span of the main bridge is up to 1176 meters. The construction is very difficult and rare in the world. In order to cope with the problem of mechanical loading, bridge structure adopts the scheme of adding vertical anchorage cable. The anchors are deeply driven into the rock to keep the structure stable. In order to fix the anchor base, they used another important member of the carbon fiber family - carbon fiber prestressed cable! Different from the carbon fiber cloth, the carbon fiber prestressed cable is used to guide the anchoring sling to the ground strata. In the past, the traditional cable adopted the steel bar. Why did they use carbon fiber cable this time?

Compared with the steel cables, carbon fiber reinforced materials are more lightweight and have greater tensile strength, especially the corrosion resistance of carbon fiber materials. Both carbon fiber prestressed cables and carbon fiber cloth have stable chemical composition, moisture resistance, humidity and acid resistamce. In Chongqing and Changsha, the underground rock is very humid. The service life of carbon fiber material is several times longer than steel bars. And it is more secure than steel rope. And the wind in the valley is rush. If they used steel materials, it is easily deformed. While the carbon fiber materials have high elastic modulus and will not be easily deformed.

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Whether it is carbon fiber cloth or carbon fiber prestressed cable, they are all important members of the carbon fiber family and are indispensable materials for road and bridge reinforcement projects. If you also need carbon fiber cloth, welcome to Nanjing Mankate.

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Editor: Nanjing Mankate

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