Whitetopping- An Engineered Economical Long-lasting Solution for Distressed Roads
Dr Rakesh Kumar, Scientist and Dr Renu Mathur, Scientist & HoD,Rigid Pavements Division, Central Road Research Institute (CRRI), New Delhi
Whitetopping is an engineered method of placement of concrete overlay on existing distressed bituminous as well as concrete roads. In India, whitetopping technology is being adopted at a very fast rate not only as a measure for overcoming commonly occurring distresses in bituminous roads but also for the purpose of enhancing load carrying capacity of the roads. Currently, this technology is being adopted for colonies and street roads of cities at a large scale. The thickness of whitetopping generally varies from four inches to ten inches. Based upon the thickness of the concrete overlay, it is known as ultrathin, thin, and conventional whitetopping. Whitetopping has immense potential to result in a stronger and more durable pavement with respect to bituminous pavements. This technology provides several advantages over new construction on virgin sub-grade and granular or treated bases as well as bituminous overlays.
Whitetopping is an engineered method of placement of concrete overlay on existing distressed bituminous as well as concrete roads. In India, whitetopping technology is being adopted at a very fast rate not only as a measure for overcoming commonly occurring distresses in bituminous roads but also for the purpose of enhancing load carrying capacity of the roads. Currently, this technology is being adopted for colonies and street roads of cities at a large scale. The thickness of whitetopping generally varies from four inches to ten inches. Based upon the thickness of the concrete overlay, it is known as ultrathin, thin, and conventional whitetopping. Whitetopping has immense potential to result in a stronger and more durable pavement with respect to bituminous pavements. This technology provides several advantages over new construction on virgin sub-grade and granular or treated bases as well as bituminous overlays.
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NBM&CW September 2011
