Journal
ROAD MATERIALS AND PAVEMENT DESIGN
Volume 23, Issue 11, Pages 2451-2465Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/14680629.2021.1976257
Keywords
Steel bridge deck pavement; epoxy binder; epoxy bonding chips layer; mechanical properties; durability; surface free energy
Categories
Funding
- Fundamental Research Funds for the Central Universities [2572017CY04, DUT20JC50]
- National Natural Science Foundation of China [51508137, 51578200]
- Heilongjiang Provincial Postdoctoral Science Foundation [LBH-Z17003]
- Science and Technology Project of Heilongjiang Transportation Department
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The WAL serves a critical waterproof and adhesive function in steel bridge decks, with epoxy binder showing good performance. Therefore, EBCL is suitable for steel bridges.
The waterproof-adhesive layer (WAL) plays a critical waterproof role for steel bridge deck since the steel is prone to corrosion. It also plays a critical adhesive role, which ensures the coordinated deformation of steel bridge deck and pavement on it. The adhesion between epoxy binder and steel, and the workability, tensile shear strength, deformability, durability of epoxy binder were tested in laboratory. The adhesion between binders for WALs and steel was explained based on the surface free energy theory. Further, three different WALs were studied on their adhesion to steel with direct shear strength tests. It is found that the epoxy binder exhibited good shear strength, deformability, durability. Furthermore, the interface adhesion work between epoxy binder and steel was found largest among binders and the shear strength between the epoxy bonding chips layer (EBCL) and steel found largest. It concludes that the EBCL is an appropriate WAL for steel bridges.
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