International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | Mar-2017
p-ISSN: 2395-0072
www.irjet.net
Performance Evaluation of Rigid Pavements Akshay. J1, Inchara.K.P2, Mithun. K 3 1Assistant
Professor, Dept. of Civil Engineering, KIT, Karnataka, India Professor, Dept. of Civil Engineering, KIT, Karnataka, India 3Assistant Professor, Dept. of Civil Engineering, KIT, Karnataka, India ---------------------------------------------------------------------***--------------------------------------------------------------------2Assistant
Abstract - Rural roads play an important role in the
reach a minimum acceptable level, at that point maintenance would be carried out and a new service life would begin. Pavement condition consists of four main components; riding comfort, load carrying capacity, safety and aesthetics. Pavement condition data are collected to assist in making decision on highway maintenance, rehabilitation and reconstruction. For successful maintenance of the pavements it is essential to know the present condition of the pavement to withstand the design traffic under prevailing climate and environmental conditions. When pavements are subjected to increased magnitude of wheel loads the pavement deterioration starts earlier than the anticipated design life. The PSI models and PCI help to analyze the present condition and to provide a proper maintenance to the pavements to increase the service life.
development of the country, as major part of the Indian population stays in rural areas. The construction of cement concrete rural roads has gained momentum due to the central government sponsored program called Pradhana Mantri Gram Sadak Yojana (PMGSY). In the present study, nine cement concrete test stretches constructed under PMGSY connecting many villages in Hangal Taluk, Haveri District at Karnataka state in India were selected, to develop the present serviceability index (PSI) equation for cement concrete roads. To carry out the studies, the test stretches were selected with varying pavement conditions from worst to good condition. The unevenness of the pavements was determined using MERLIN, and the unevenness values were expressed in terms of BI and are measured in millimeters per kilometer. The distress such as scaling (ravelling), spalling, faulting, cracking, rut depth etc were measured and recorded. The rating studies were also carried out by constituting two panels with five raters in each panel. The ratings of the two panels from the field observations were subjected to error elimination viz leniency error and central tendency error. The true ratings were obtained after application of corrections to the individual ratings. The distress data and the mean of the corrected ratings of both visual and ride ratings were used and regression analysis were carried out to develop PSI equations for these village roads based on both visual and ride ratings. The pavement distress data were substituted in the developed models to obtain the PSI values. Then the values were compared with the corrected PSR values obtained from rating studies. The pavement condition index (PCI) values were computed by the deduct value method.
1.1 Location of the Roads selected for studies: In the present study, nine different rural road stretches connecting many villages in Hangal Taluk, Haveri District at Karnataka State in India were selected. These nine stretches were further divided into 20 subsections for more precise studies. The different technologies were adopted for the construction of these roads. These roads were constructed by under the initiation of Central Government programme ‘Pradha Mantri Gram Sadak Yojana’ (PMGSY). The roads which are considered for this study comes under PMGSY and constructed as experimental stretches with varying the construction material and to evaluate their performance, durability and cost. The carriageway width of each road was found to be 3.75 m.
Key Words: Present Serviceability Index (PSI), Pavement Condition Index (PCI), International Roughness Index (IRI), Present Serviceability Rating (PSR) 1. INTRODUCTION Road transport is an important mode of transport having many desirable characteristics such as flexibility, door to door service and accessibility to remote areas. The development of distress in a road leading to failure can be considered as a continuation of the development of the irreversible strain in the road, after a period of initial compaction due to repeated loading of one or more elements of the road above critical values of stress and strain. The service life of the pavement would be reached when any one of the structural or functional parameters
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Fig 1: Map showing the project Location & project roads.
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