The world's first graphene modified pavement settled in Guangxi

China Powder Network News Graphene industrialization application has made a major breakthrough. Recently, the world's first graphene composite rubber modified asphalt pavement was built in Guangxi Nanning Bridge. It is the first in the world to realize the commercial application of graphene in road and bridge high-grade highways. It has opened up the graphene industry from graphene macro preparation to large-scale production. The applied industrial chain has pointed out a new direction for the development of graphene industry.

The Nanning Bridge, built in 2009, is one of the landmark buildings in Guangxi, with a steel box girder structure. Due to its high flexibility and strong temperature sensitivity, the steel box girder bridge has difficulty in bonding steel plates to asphalt concrete layers. Under the action of heavy traffic and heavy vehicles, the bridge deck produces large bending, tensile, shearing and temperature change stresses. Pavement technology has always been a worldwide problem, such as cracking, rutting, shifting, delamination and bagging.

In the fully enclosed overhaul of the Nanning Bridge after 10 years of construction, based on the preservation of the original road structure design, the graphene composite rubber modified asphalt technology jointly developed by Professor Shen Peikang of Guangxi University and Guangxi Zhenglu Machinery Technology Co., Ltd. was used Deck pavement. According to reports, the addition of graphene has greatly improved the various indicators of the modified rubber asphalt pavement, which can effectively reduce the pavement temperature, improve the high temperature dynamic stability of the pavement, low temperature crack resistance, road surface adhesion, and aging resistance. Effectively solve many problems that are prone to occur in steel box girder bridge decks. This technology is a key breakthrough in the field of new transportation materials. The technical indicators are significantly higher than the traditional pavement technical specifications, effectively solving the common problem of low road life in China. This technology has high cost performance and will produce more Great social and economic benefits.

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