Analytical Investigation for Determining Ressilient Modulus for Interface Layer of Aggregates
Quality road aggregates have become rare and costly in many places in India due to massive construction activities required for the development of new infrastructure facilities. The pavement industry seeks ways of improving lower quality materials that are readily available for use in roadway construction. Cement treatment has become an accepted method for increasing the strength and durability of soils and marginal aggregates. However, cement-stabilized bases can also be the source of shrinkage cracks in the stabilized base layer, which can reflect through the asphalt surface. Introducing “Interface Layer of Aggregates (ILA)” between stabilized base and bituminous concrete (BC) layer appears to be very favorable. The present paper presents the determination of resilient modulus of ILA using FPAVE software. Figures have been developed to determine resilient modulus, varying the CBR value, the thickness of cement treated base and the thickness of interface layer of aggregates which is useful to determine the pavement thickness for cement treated base.
Flexible Pavement Design and Comparison of Alternative Pavements using IRC 37-2012 IITPAVE
The project includes collection of data related to traffic studies, axle load survey and sub-grade CBR values from the field. From the data obtained, flexible pavement will be designed with the help of guidelines mentioned in IRC: 37-2012.Then we analyse the pavement using software IITPAVE and compare with the alternate pavements available in the IRC: 37-2012. An attempt will be made to study the life cycle cost of different pavements.
APPLICATION OF AASHO ROAD TEST RESULTS TO THE DESIGN OF FLEXIBLE PAVEMENT STRUCTURES
This paper outlines the methods utilized by the AASHO Operating Committee on design in applying the results of the AASHO Road Test to the design of flexible pavements. The pavement serviceability used to analyze Road Test data, is accepted as the basis of the design procedures that have been evolved. Also, the equations that have been reported as the findings of the Road Test are accepted and used without modification as to basic form.