A Comparative Analysis of Flexible Pavement Design using IRC 37-2012 and IITPAVE Software

P Praveen Kumar; S Manjunatha; P B Gnanamurthy

doi:10.17485/IJST/v16i43.2479

Article

A Comparative Analysis of Flexible Pavement Design using IRC 37-2012 and IITPAVE Software

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Indian Journal of Science and Technology

DOI: 10.17485/IJST/v16i43.2479

Year: 2023, Volume: 16, Issue: 43, Pages: 3875-3883

Original Article

A Comparative Analysis of Flexible Pavement Design using IRC 37-2012 and IITPAVE Software

P Praveen Kumar^1*, S Manjunatha¹, P B Gnanamurthy²

¹Assistant Professor, Department of Civil Engineering, Govt SKSJT Institute, Bangalore, 560001, Karnataka, India
²Assistant Professor, Department of Civil Engineering, Govt Engineering College, Ramanagara, 562159, Karnataka, India

*Corresponding Author
Email: [email protected]

Received Date:01 October 2023, Accepted Date:05 October 2023, Published Date:14 November 2023

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Objectives: To conduct a comparative analysis of pavement design methodologies adopted by the Indian Road Congress (IRC) 37-2012, based on the empirical method and mechanistic-empirical approach adopted by the IITPAVE software. Methods: The present research is carried out to design pavement crust thickness and calculate the strain values in pavement by adopting IRC 37-2012. Pavement crust thickness is designed based on real-time traffic and soil data collected for a stretch of road in Tamil Nadu, India. The allowable horizontal tensile strain and vertical compressive strains are estimated by the empirical equations proposed by IRC 37-2012 and the mechanistic-empirical method by IITPAVE software. A comparison of both design methodologies is made to check for their safety. Findings: Based on the soil data and traffic data from the stretch of road, the California Bearing Ratio (CBR) of the soil sample and design traffic in terms of million standard axles (msa) were computed to arrive at a total pavement crust thickness of 575 mm by adopting IRC 37-2012. The obtained values of allowable horizontal tensile strain at the bottom of the bituminous layer from IRC 37-2012 and the actual strain values from IITPAVE software are 301.73x10-6 and 270.4x10-6 respectively. Similarly, the allowable vertical compressive strain on the top of the subgrade soil surface and the actual strain values from IRC 37-2012 and IITPAVE software are 583.98x10-6 and 381.6x10-6 respectively. The analysis of the research shows that the actual compressive and vertical strain values obtained from IITPAVE are within the allowable strain values as per the code provisions of IRC 37-2012, making the design safe. Novelty: The novelty of the study lies in its approach to distinguishing itself by focusing on real-time data collection, analysis, and design of pavement. Furthermore, the design is checked for safety by using the latest available software.

Keywords: Pavement Design, IRC 372012, IITPAVE, Tensile Strain, Compressive Strain, Safe Design

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Copyright

© 2023 Kumar et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)