Study on Epoxy Adhesive Layer for Steel Bridge Deck Pavement and Its Interlayer Properties
To study the interlayer bonding properties of epoxy-based bonding layer between UHPC and SMA pavement structure,the mechanism and material properties of self-developed epoxy bonding agent(RS-EVB)were studied.The interlayer bonding properties of UHPC/SMA under the action of epoxy binder and its influencing factors were studied by shear test.The results show that:lthie epoxy binder has suitable working performance,the tensile property meets the design requirements(tensile strength ≥3.0 MPa and elongation at break ≥190％).Meanwhile,it has low water absorption and good resistance to chemical media such as acid,alkali and salt,which is comparable to the properties of imported KD-HYP materials;②the epoxy binder has excellent strength that the interlayer adhesion failure occurs mainly,rather than the epoxy cohesive failure.③ The interlayer shear performance of pavement decreases significantly with the increase of temperature,which is affected by the amount of adhesive layer,health preservation time and surface roughness of UHPC.The epoxy adhesive layer has excellent material properties and interlayer bonding properties.Therefore,it is necessary to put forward specific instructions for the use of materials that are suitable to the construction technology to guide the construction of the project so as to control the construction quality.
road engineeringUHPC and SMA pavement structureepoxy adhesive layermaterial performanceshear performance
NETL
NSTL
万方数据
