Dowel bars at transverse expansion joints in rigid (cement concrete) pavement primarily:
Choose the correct answer
Act as reinforcement for the slab
Transfer loads between adjacent slabs while allowing longitudinal movement (expansion/contraction)
Prevent warping
Mark the joint location
Correct Answer
B. Transfer loads between adjacent slabs while allowing longitudinal movement (expansion/contraction)
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Dowel bars (smooth, round, coated with debonding agent on one side) transfer shear across transverse joints while allowing longitudinal thermal movement. Tie bars (at longitudinal joints) are deformed bars that prevent separation of slabs but do NOT allow movement.
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