Emerging Methodologies & Technologies for Construction of Flexible Pavement
M.N.Nagabhushana, Senior Principal Scientist, Flexible Pavements, Co-ordinator (APTF), Pavement Engineering Area, CSIR-CRRI, New Delhi
Introduction
While an efficient transport system is needed for growth of economy, roads play an important role as most sought mode of transport. India has an extensive road network of 4.6 million kms and number of vehicles are growing at almost 10% per annum in last 5 years with overloading and growing traffic stressed road infrastructure. To cope up with increasing transportation demand, in the immediate next following decades, newer and different transportation systems will be greatly encouraged; however, road transport will continue to play a major role. As this new regime approaches and the earlier methods tend to become unacceptable, labour and labour-intensive techniques will experience shortages. In addition, the world is facing acute shortage of naturally available ingredient materials and the cost of construction materials increasing every year; the situation is forcing the agencies to find alternate sources and materials. Also, design, materials, and workmanship, will have to provide a long-lasting product to avoid the need for major traffic disruptions for maintenance and rehabilitation or reconstruction, keeping in mind the health and safety issues as well. This scenario demands new techniques, construction-automation and equipment, so that equivalent work can be performed with fewer crew. The automation is likely to prove more reliable, efficient, and cost-effective as well. Road pavements and allied structures, thus, are expected to undergo significant changes in terms of materials and methods of construction operations.
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Published on:
07 April 2018
Published in: NBM&CW March 2018
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