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Rigid pavements are highly rigid structures made mainly of cement concrete, built primarily to provide maximum load carrying capacity through slab action. The design principles revolve around factors such as modulus of sub-grade reaction, critical load positions, and types of stresses including temperature and frictional stresses. Comprehensive joint design considerations for expansion and contraction joints, as well as dowel and tie bars, are necessary to ensure durability and functionality.
Chapter 818 sections
Rigid pavements are highly rigid structures made mainly of cement concrete, built primarily to provide maximum load carrying capacity through slab action. The design principles revolve around factors such as modulus of sub-grade reaction, critical load positions, and types of stresses including temperature and frictional stresses. Comprehensive joint design considerations for expansion and contraction joints, as well as dowel and tie bars, are necessary to ensure durability and functionality.
Rigid pavements are primarily made of cement concrete, offering high rigidity under loads.
The effective design of rigid pavements incorporates critical load positions and various stress types.
Joint designs, like expansion and contraction joints, are essential for accommodating temperature variations and preventing structural damage.
A measure of the sub-grade support provided to a slab, defining the relationship between pressure and deflection.
Specific locations (interior, edge, corner) on a pavement slab where stress distributions are critically affected by vehicle loads.
Stresses caused in the pavement due to temperature gradients resulting in slab deformation.
Stresses generated due to friction at the interface between the slab and the sub-grade.
Steel bars used to transfer loads between two concrete slabs and maintain their level.
Bars used to keep two slabs tied together but do not transfer loads.
Total Questions
2
Estimated Time
4 min
Passing Score
70%
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