Abstract:
Pavements are one of the most significant parts of any highway system. To design any
pavement structure, the subgrade soil plays a crucial role as it has to provide sufficient
support to the pavement. It has to have proper stability under harsh traffic and climatic
conditions. Soils generally found in distinguished sites are strong enough to bear the
designed load of the structure that has to be built upon them or there may be a requirement
to modify it. Clays as subgrades pose serious problems to flexible pavements built over
them as they retain moisture for a longer period and possess low strength. As pavement
structures are exposed to forces of nature and fatigue loads, their durability and stability are
of key importance. Excessive settlements along the wheel tracks on pavement surface and
bearing capacity failures in the subgrade soil are often observed in the flexible pavements
constructed over such subgrades. Soil stabilization is an important aspect to improve the
strength of soils and bring it up to certain standards as per the engineering requirements.
The present study is carried to evaluate the strength and performance of pavement
constructed on low-bearing capacity soil mixed with recycled asphalt pavement aggregates
subjected to the traffic load. The analysis is being carried out using IITPAVE software
where actual strain and deflection are obtained, which is based on the M-E design approach.
