Investigation into Shear Experiment on Interface between Asphalt Pavement and Concrete Bridge Deck

Abstract:

This paper describes the laboratory measurement of shear interface properties between asphalt pavement and concrete bridge deck using the shear test. The main factors affecting shear strength are interface frictional resistance and adhesive stress from material of waterproof layer. Firstly, we simplify the whole system by considering the asphalt pavement as an elastic layer and the cement concrete deck a rigid base. And make a sensitivity analysis on interface contact state and the material modulus of waterproof layer. The maximum shear stress increases as interface contact state changes from continuous to smooth and as modulus of waterproof layer material decreases. Secondly, an interface shear experiment is conducted with the application of portable shear apparatus. With interface shear strength as evaluation indicator, shear strength of different interface treatments is arranged in descending order, i.e. cleaning up laitance and spreading aggregate between layers; only cleaning-up laitance; leaving the surface untreated. While the descending order for shear strength of different waterproof materials can be listed as follows: SBS modified asphalt, penetration grade of 70 asphalt. Therefore, based on the laboratory test results, it is recommended that before applying waterproof adhesive layer, laitance and dust on concrete deck surface should be cleaned up and keeping it dry. And the material for waterproof adhesive layer should be SBS modified asphalt with one-size aggregate of 4.75mm-9.5 mm spreading on.

• Periodical: Advanced Materials Research (Volumes 197-198)
• Pages: 1435-1442
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.197-198.1435
• Online since: February 2011
• Authors: Hong Fu Liu, Jian Long Zheng, Guo Ping Qian, Yun Yong Huang
• Keywords: Asphalt Pavement, Concrete Bridge, Shear Experiment, Shear Strength, Waterproof Adhesive Layer

References

[1] A.C. Collop, M.H. Sutanto, G.D. Airey, R.C. Elliott. Construction and Building Materials, 2009. 2251-2258.

DOI: 10.1016/j.conbuildmat.2008.11.017

[2] Hee Mun Park, Ji Young Choi, Hyun Jong Lee, Eui Yoon Hwang. Construction and Building Materials, 2009. 219-225.

[3] Sung-Hoon Kim, Jun-Hyeok Choi. Journal of Constructional Steel Research, 2010. 1339-1344.

[4] Zanjun Zhang. Research on Performance System on and design method of Waterproofing Concrete Bridge decks [D]: Ph.D. dissertation, Chang'an University, (2004).

[5] Xuelian Li. The Research on The Structure Mechanical Properties of The Tied Arch Bridge [M]: Master dissertation, Changsha University of Science &Technology, (2005).

[6] Wei Xu. EXPERIMENTAL STUDY OF ASPHALT OVERLAY ON THE DECK OF LONG SPAN CONCRETE BRIDGE [D] : Ph.D. dissertation, Harbin Institute of Technology, 2002. 9.

[7] Qinghua Zhou, Qinwu Xu. Materials and Design, 2009. 1161-1168.

[8] Fengjun Zhao，Yuzhi Li，Weijian Yi. CHINA CIVIL ENGINEERING JOURNAL, 2007. 6.