Experimental Study on Design of Flexible Pavement using Atterberg Method
The procedure presented here for design of flexible pavements is generally referred to as the Atterberg test design
procedure. This procedure requires that each layer be thick enough to distribute the stresses induced by traffic so that when
they reach the underlying layer they will not overstress and produce excessive deformation in the underlying layer.
As we know that the load on the pavement is generally increasing with the increase in traffic. Traffic is considered in terms
of the cumulative number of standard axles(8160 kg) to be carried by the pavement during the design life. For estimating the
design traffic, the following information is needed:
1. Initial traffic construction(CVPD)
2. Traffic growth rate during design life
Flexible pavements will transmit wheel load stresses to the lower layers by grain to grain transfer through the points of
contact in the granular structure. The following common factors influencing the performance of pavement are :-a)Traffic
b)moisture c)Subgrade d)construction quality e)maintenance.
Thorough analysis of the existing pavement is necessary to understand the existing conditions and estimate the futuristic
scenario to maintain sustainability of the road pavement and safe travel.