Analysis and Design of Rigid Pavement in Submerged Condition

Abstract

A pavement structure causes huge expense for their rehabilitation and maintenance because of flooding or improper drainage conditions. It has been in practice from the evolution of art to science design of rigid pavements is defined by an important experimentation phenomenon. In rigid pavements the cement concrete slab is placed either on a single layer of granular material or directly on the sub grade. In rigid pavement design, sub grade strength is obtained by modulus of sub grade reaction (K). It is determined by plate load tests of the foundation defined as the pressure per unit deflection. Temperature variations during day and night time causes temperature stresses due to curling occurs for cement concrete slabs. Due to seasonal temperature variations the concrete slab is subjected to contraction and expansion. Pavement causing damage due to the cyclic load applications of vehicles stressed are induced on the slab. In this study, an analysis is carried out to determine the effect on sub grade strength and its properties during pavement submergence period. An existing pavement structure suggested by the Indian Roads Congress standard is analyzed and compared with its submerged condition. New pavement sections were designed using the material properties under submerged cases, and fatigue analysis is done through IRC method.