whitetopping
WHITE-TOPPING A SOLUTION FOR DISTRESSED ROAD
ABSTRACT
India has one of the largest highway and road networks on the planet, third road network after United States and China. The road network has expanded from 0.4 million km in 1951 to about 3.32 million kilometres presently (2012), a sevenfold increase, but traffic has increased 120 times. This leads to the deterioration of the surface of the asphalt pavements and a need to rehabilitate them before further damage could occur. Since the use of a concrete overlay, called as whitetopping, is a relatively new concept in Hot Mix Asphalt (HMA) pavement rehabilitation in India. Portland cement concrete (PCC) overlay on an existing bituminous pavement is commonly known as whitetopping. The principle purpose of an overlay is either to restore or to increase the load carrying capacity or both, of existing pavement. Whitetopping as a measure of repair and rehabilitation of distressed road is gaining popularity and acceptance at a large scale in India due to its sustainable characteristic and freedom from the requirement of subsequent periodical overlay.Concrete overlay offers cost-effective alternative to asphalt overlay taking into account life-cycle costs, whitetopping can be cost-effective in rehabilitating deteriorated asphalt pavements.
KEY WORDS:-
HMA
PCC
DETERIRORATION
CHAPTER – 1 INTRODUCTION
1.0 Introduction Portland cement concrete (PCC) overlay on an existing bituminous pavement is commonly known as whitetopping. The principle purpose of an overlay is either to restore or to increase the load carrying capacity or both, of existing pavement. 1 Whitetopping as a measure of repair and rehabilitation of distressed road is gaining popularity and acceptance at a large scale in India due to its sustainable characteristic and freedom from the requirement of subsequent periodical overlay. Concrete overlay offers cost effective alternative to asphalt overlay taking into
ABSTRACT
India has one of the largest highway and road networks on the planet, third road network after United States and China. The road network has expanded from 0.4 million km in 1951 to about 3.32 million kilometres presently (2012), a sevenfold increase, but traffic has increased 120 times. This leads to the deterioration of the surface of the asphalt pavements and a need to rehabilitate them before further damage could occur. Since the use of a concrete overlay, called as whitetopping, is a relatively new concept in Hot Mix Asphalt (HMA) pavement rehabilitation in India. Portland cement concrete (PCC) overlay on an existing bituminous pavement is commonly known as whitetopping. The principle purpose of an overlay is either to restore or to increase the load carrying capacity or both, of existing pavement. Whitetopping as a measure of repair and rehabilitation of distressed road is gaining popularity and acceptance at a large scale in India due to its sustainable characteristic and freedom from the requirement of subsequent periodical overlay.Concrete overlay offers cost-effective alternative to asphalt overlay taking into account life-cycle costs, whitetopping can be cost-effective in rehabilitating deteriorated asphalt pavements.
KEY WORDS:-
HMA
PCC
DETERIRORATION
CHAPTER – 1 INTRODUCTION
1.0 Introduction Portland cement concrete (PCC) overlay on an existing bituminous pavement is commonly known as whitetopping. The principle purpose of an overlay is either to restore or to increase the load carrying capacity or both, of existing pavement. 1 Whitetopping as a measure of repair and rehabilitation of distressed road is gaining popularity and acceptance at a large scale in India due to its sustainable characteristic and freedom from the requirement of subsequent periodical overlay. Concrete overlay offers cost effective alternative to asphalt overlay taking into