Emerging Graphene Technology Company
Hydrothermal Graphite Deposit Ammenable for Commercial Graphene Applications
Message: Graphene modified asphalt road.
A breakthrough is made in industrialized application of graphene. In the recent, the world’s first graphene compounded rubber-modified asphalt road was built in Nanning Bridge of Guangxi, which firstly realized the commercial application of graphene in high-grade highway, opened up the graphene industrial chain from scalable preparation to large-scale application and provided a new orientation for graphene industry. On May 28, Liu Zhengdong, vice president of Chinese People's Political Consultative Conference of Guangxi Zhuang Autonomous Region and secretary of Communist Party of Guangxi University and Cao Kunhua, secretary in Communist Party group and chief of Guangxi Science and Technology Department investigated the practical application of graphene compounded rubber-modified asphalt technology.
As one of the landmarks in Guangxi, Nanning Bridge built in 2009 adopted steel box beam structure. Owing to drawbacks of high flexibility, strong temperature sensitivity and being hard to cement steel plate and asphalt concrete layer, pavement failures such as cracks, rutting, pushing, delaminating and shoving would appear when loaded or over-loaded cars went through, causing dramatical bending, pushing, cutting and temperature stress. Therefore, the road-paving technology is always a worldwide challenge.
In the closure-to-traffic repair of the ten-year-old Nanning Bridge, graphene compounded rubber-modified asphalt technology co-researched by group of Shen Peikang, professor of Guangxi University and Guangxi Zhenglu Machinery Technology Co. Ltd. was adopted to pave the road on the basis of previous structure and design. It was introduced that the adoption of graphene made various indicators of traditional rubber-modified asphalt road significantly enhance and road temperature fall, with the improvement of high-temperature dynamic stability, low-temperature resistance, adhesion and aging resistance, which effectively figured out many pavement failures. This technology made a key breakthrough in new transportation material with technological indicators much higher than those of traditional road, which figured out the short-life problem of our country’s highways. Meanwhile, the cost-effective technology could produce remarkable social and economic benefits.
“The high-temperature dynamic stability is a vital indicator for high-quality asphalt road, especially for that in south area of China and ASEAN countries. With the addition of graphene, the index of high-temperature dynamic stability of asphalt road can surpass 10000, three times higher than that of national pavement technological standard. The asphalt road with graphene result in significant rutting resistance and shear resistance and improvement from 30% to 50% of other indicators. It is universal to mix macromolecule engineering plastic for traditional dynamic stability advancement, which enhances the dynamic stability of pavement but reduces friction coefficient which can lead to car accident. Our technology can increase both dynamic stability and friction coefficient, that is to say we can make sure high dynamic stability and driving safety. The application of compounded technology of graphene and regenerated rubber can increase bond stress between modified asphalt and aggregate and the hydrophobicity of oil film, resulting in enhancing low-temperature crack resistance and water resistance. To sum up, this product possesses outstanding advantages of high-temperature stability, low-temperature crack resistance, high friction coefficient, low noise and low temperature of pavement, which can prolong the service life of our asphalt pavement and reduce cost of maintenance. It is the latest development of new transportation material and a breakthrough of graphene industrialization,” said a man in charge of Guangxi Zhenglu Machinery Technology Co. Ltd.
Pan Feng, government counselor of Guangxi Zhuang Autonomous Region, Ma Shaojian, deputy president of Guangxi University, Qian Jian, deputy president of Guangxi University and deputy director of the standing-committee of NPC of Nanning City, Jiang Dongzhou, chief of Guangxi branch and Hannan branch of Science and Technology Daily and Shen Peikang, professor of Guangxi University also investigated the Nanning Bridge.
Graphene modi
4 Recommendations
Loading...
Loading...
New Message
Please
login
to post a reply