Mechanical Properties of Multi-Function Road Surfaces and Their Application on Steel Bridge Decks

The application of multi-function road surface (MRS) in the anti-skid maintenance of steel deck of Zhongshan Guangming Bridge was introduced and the mechanical properties of MRS binder and the high temperature stability, water stability, adhesive property of MRS overlay were comprehensively studied. The results indicated that MRS binder had excellent bond strength and durability; MRS overlay had excellent high temperature stability, water stability, adhesive properties, and the skid resistance of the steel deck was improved significantly. The bond strength of MRS binder to steel and tensile lap-shear strength of MRS binder were 19.2 MPa and 17.6 MPa, respectively, After exposure to damp heat for 20 days, the bond strength of MRS binder was 3.2 MPa. After 5 high-low temperature cycles, the bond strength of MRS binder was 3.3 MPa. And all breaks of the samples were found in concrete. The dynamic stability of MRS overlay was 25245 times/mm under the temperature of 70°C and the pressure of 0.9 MPa, and its immersion Marshall residual stability was 95.4%, and the bond strength of MRS overlay was 4.4 MPa. The British pendulum number of the deck under dry and wet condition was increased from 60 to 97 and 36 to 86 respectively. And the water permeability coefficient of the MRS overlay was 0 ml/min.