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Interlayer Shear Characteristics of Bridge Deck Pavement through Experimental and Numerical Analysis
Weidong Chen1, Bing Hui2, Ali Rahman3,4
1Chang'an-Dublin International College of Transportation, Chang'an University, Xi'an 710064, China.
Materials (Basel, Switzerland)
|October 14, 2022
Summary
Strengthening interlayer bonding in bridge deck pavement significantly reduces shear stress, enhancing structural integrity. Resin emulsified asphalt is recommended, but higher temperatures decrease bond strength.
Area of Science:
- Civil Engineering
- Materials Science
- Structural Engineering
Background:
- Bridge deck pavement requires robust interlayer shear behavior for longevity.
- Understanding interfacial conditions is crucial for managing shear stress under dynamic loads.
Purpose of the Study:
- To numerically simulate and experimentally evaluate interlayer shear behavior in bridge deck pavement.
- To analyze the impact of interfacial conditions and adhesive materials on shear stress and bond strength.
Main Methods:
- Numerical simulations of moving loads on pavement layers.
- Laboratory testing of adhesive and waterproof adhesive material shear strength.
- Statistical analysis of influencing factors on interlayer bond strength.
Main Results:
- Improved upper interlayer bonding reduced shear stress at the pavement base by up to 65%.
- Full bonding of the upper interlayer minimized shear stress in the lower layer.
- Resin emulsified asphalt showed promise as an adhesive material.
- Interlayer bond strength decreased with increasing temperature.
Conclusions:
- Strengthening interlayer bonding is vital for enhancing bridge deck pavement integrity and shear resistance.
- Resin emulsified asphalt is a suitable adhesive, but temperature effects must be considered.
- Structure type, adhesive material, and temperature significantly impact interlayer bond strength.
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