In rigid cement concrete pavement, longitudinal joints are provided to:
Choose the correct answer
Control cracking due to thermal expansion and contraction in the transverse direction (width)
Divide the slab into lanes and prevent cracking due to differential settlement or warping in longitudinal direction
Provide load transfer between slabs
Mark lane boundaries only
Correct Answer
B. Divide the slab into lanes and prevent cracking due to differential settlement or warping in longitudinal direction
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Longitudinal joints in rigid pavement run parallel to traffic direction, dividing the carriage into individual lane slabs. They prevent cracking due to differential temperature warping and differential settlement across the width. Transverse joints control longitudinal cracking.
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