Research on Interlaminar Shear Properties of Bridge Deck Asphalt Pavement on Chip-Sprinkling Cement Concrete
REN Wanyan
HAN Sen
LI Jun
LIU Yamin
Abstract：In order to explain the interlaminar shear properties between chip-sprinkling cement concrete (CSCC) bridge deck and asphalt pavement structure,traditional interface texture treatment methods,named grooved,rough and smooth respectively,were chosen as control groups.Interlaminar ultimate shear strengths of specimens with different interface types were tested when vertical loads were 0,0.7,1.4 MPa.Relationship between interlaminar shear stress and shear displacement was analyzed for different interface types of specimens with 0.7 MPa vertical load.Effects of temperature,water and freeze-thaw cycle on interlaminar ultimate shear strength were studied for specimens with different interface types.Besides,interlaminar shear strength was analyzed in terms of chip-sprinkling interface specimens with different asphalt pavement types of AC 13C,AC-20C and SMA-13 respectively.Experimental results indicate that specimens with chip-sprinkling interface type show greater internal friction angle and cohesive force than other interface types of specimens,and interlaminar ultimate shear strength is up to 1.0 MPa,residual shear strength is up to 80 ％ of its ultimate shear strength.Specimens with chip-sprinkling interface type exhibits low sensibility to temperature and water,and low degradation of interlaminar ultimate shear strength under freeze-thaw cycles.Asphalt pavement type has a significant influence on interlaminar ultimate shear strength,with ultimate shear strength of AC-20C and SMA-13 specimens greater than that of AC-13C specimen.
Keywords：chip-sprinklingcement concrete bridge deckasphalt pavementinterface typeinterlaminar shear propertydurability
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 111-116 )