Application of Synchronous Chip Seal Course in Large Bridges

Abstract:

The 5.6km long Yellow River Bridge is the control engineering of the Baoshu highway. Design documents indicate that the adhesive layer uses modified emulsified asphalt and the spray waterproof layer is over the adhesive layer. Because the Yellow River Bridge’s single-span is too large the bridge deck is too longer, the design of waterproof bonding layer s can easily lead to the early destruction of deck. Based on the careful analysis and investigation, project and the technical advisory group decided to adopt SBS modified bitumen Synchronous Chip Seal instead of modified asphalt emulsion waterproof bonding layer. And the engineering project controls the construction process to control construction effects. This method effectively solves the phenomenon of sticking wheel. After construction, the synchronization gravel seal bond strength test, the results show that average bond strength is 0.58MPa at 22 °C, greater than the standard specification’s requirement. Construction effect is good of Baoshu highway simultaneous gravel seal.

• Periodical: Advanced Materials Research (Volumes 482-484)
• Pages: 1073-1077
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.482-484.1073
• Online since: February 2012
• Authors: Dan Jun Duan
• Keywords: Large Bridge, SBS Modified Bitumen, Synchronous Chip Seal

References

[1] Xianhui Liu, Zhefeng Wu, Xuezheng Pai: Northeast Road,Vol. 01(2003),p.21 .In Chinese

[2] Junhao Zhang: Shanxi Science & Technology of Communications, 4 (2008),p.65.In Chinese

[3] Suli Chen, Fuwen Xu, Guizhi Li: Highway, 06(2005),p.174.In Chinese