International Journal of Science, Engineering and TechnologyAuthors: Namathoti Snehalatha, G. Nagalakshimi
Abstract: The present effort focuses on improving the technique for analyzing and designing flexible pavement by taking into account the wide range of materials that will be utilized in the various pavement layers and the real field's environmental conditions. In order to understand how different loading conditions and material qualities affect performance parameters, the 2D axis symmetric finite element approach is used. The horizontal and vertical limits of the mesh are established after assuming and validating the planned pavement sections from the relevant codes. Subgrade soils were categorized according to their strength parameters by field study and laboratory examination. This research analyzes the impact of various waste products, both singly and in combination, on the physical characteristics, rutting, and fatigue behavior of pavement in a controlled laboratory setting. Structural models make use of a wide variety of input data, such as traffic characteristics, moduli of paving materials, etc. Distress models employ structural model outputs such as strains, stresses, and deflection, and their results are compared to fatigue and rutting requirements from the design handbook of flexible pavement (IRC37-2012). By comparing the estimated strains at the key sites with the allowed limits, the thicknesses of hypothetical circumstances created under different combinations of different materials and varied thicknesses may be determined. The majority of India's flexible pavement is showing signs of early deterioration, much before the end of its expected lifespan. The results of an analysis of the relationship between overloading and inflated pressure show that the former is likely a contributing factor to the premature degradation of pavement. Overloading has a greater impact on pavements built on poor subgrade soils; hence, this problem must be addressed at the pavement design phase. Back-calculated elastic moduli bituminous mix designs, as suggested by temperature analysis, are likely to have the best possible depth, making them more cost-effective. The proposed design charts are more realistic and optimal since they take into account a number of aspects of diverse nature; these charts may be used to replace an existing pavement section in a way that is both environmentally friendly and fiscally responsible.
