Design and Construction of Rigid and Flexible Pavement on the Basis of Laboratory Tests and Analysis

Abstract

A highway pavement is a structure consisting of superimposed layers of processed materials above the natural soil sub-grade, whosewho’s first and the foremostprimary function is to distribute the applied vehicle loads to the sub-grade. The pavement structure should provide a surface of acceptable riding quality, favorable light reacting characteristics, adequate skid resistance, favorable light reacting characteristics, and low noise pollution. The ultimate aim is to ensure that the transmitted stresses due to wheel load are sufficiently reduced, so that they will not exceed bearing capacity of the sub-grade. Two types of pavements are commonly known as flexible and rigid pavements are recognized as the most cost effective and durable in all aspects. This type of research gives an overview of pavement types, layers , and their functions, and pavement failures. Improper design of pavements that leads to early failure of pavements acting the riding quality has been taken into consideration for safe and comfortable road construction. Prior to the design of pavement, laboratory tests of soil, aggregate and bitumen were conducted. This followed by preparation of four mould samples of hot mix designs with 4%, 5%, 6% and 7% of bitumen whose grading, bulk density and air voids were calculated.