To investigate the shear performance

bonding performance

and low temperature performance of the composite waterproof cohesive layer of cement concrete bridge deck

the Jianhua Bridge on Beian-Fuyu highway was taken as the research object. Composite specimens were prepared using cement concrete

SBS modified asphalt waterproof cohesive layer

and AC-5 asphalt sand

and the amount of waterproof cohesive layer was taken as a variable to carry out direct shear and pull-out tests. Meanwhile

asphalt sand AC-5 beam specimens were prepared to conduct low temperature cracking and low temperature shrinkage tests. Results show that when the amount of waterproof cohesive layer was 0.6 kg/m2

the interlayer shear strength was the best

reached 3.45 MPa. With the increase of the amount of waterproof cohesive layer

the pull-out strength first increased and then decreased. When the amount of waterproof cohesive layer was 0.8 kg/m2

the pull-out strength was the highest. The maximum bending strain at the bottom of asphalt sand beams decreased with the decrease of temperature

while the flexural stiffness modulus was gradually increased

and the bituminous mixture had the severest deformation in the temperature range of -5--10 ℃.