name the measures of noise reduction in asphalt pavements?
Author: admin Category: Noise Reduction
how we can reduce noise in asphalt pavements or what are the measures to reduce noise generation in asphalt pavements?
Noise reduction
Asphalt is the quiet pavement. Quiet pavement technologies include open-graded surfaces, fine-graded surfaces, and two-layer open-graded pavements.2 Studies show that the noise-reducing properties of asphalt last for many years.3
Noise reductions of 3 to 10 dB(a) are common. Reducing noise by 3 dB(a) is about the same as doubling the distance from the road to the listener, or reducing traffic volume by 50 percent.
For more information on quiet pavement technology, visit www.quietpavement.com.
Congestion reduction
Asphalt pavements are faster to construct and rehabilitate. In crowded urban areas, where closing a road for rehabilitation or reconstruction would dump increased traffic on neighboring routes—adding to congestion-asphalt is the answer. Highways and roads can be milled for recycling, then overlaid, during off-peak hours, so that most motorists are never inconvenienced.
Smoothness and conservation
Studies at a pavement test track in Nevada have shown that driving on smoother surfaces can reduce fuel consumption in the neighborhood of 4.5 to 5 percent.4
When trucks are driven on rough surfaces, the tires bounce and deliver heavy, punishing impacts to the pavement. Some experts estimate that a 25 percent increase in smoothness can result in a 9 to 10 percent increase in the life of pavements.
Building smooth asphalt roads is simple and cost-effective. Keeping them that way is fast, easy and inexpensive.
August 3rd, 2009
Noise reduction
Asphalt is the quiet pavement. Quiet pavement technologies include open-graded surfaces, fine-graded surfaces, and two-layer open-graded pavements.2 Studies show that the noise-reducing properties of asphalt last for many years.3
Noise reductions of 3 to 10 dB(a) are common. Reducing noise by 3 dB(a) is about the same as doubling the distance from the road to the listener, or reducing traffic volume by 50 percent.
For more information on quiet pavement technology, visit http://www.quietpavement.com.
Congestion reduction
Asphalt pavements are faster to construct and rehabilitate. In crowded urban areas, where closing a road for rehabilitation or reconstruction would dump increased traffic on neighboring routes—adding to congestion-asphalt is the answer. Highways and roads can be milled for recycling, then overlaid, during off-peak hours, so that most motorists are never inconvenienced.
Smoothness and conservation
Studies at a pavement test track in Nevada have shown that driving on smoother surfaces can reduce fuel consumption in the neighborhood of 4.5 to 5 percent.4
When trucks are driven on rough surfaces, the tires bounce and deliver heavy, punishing impacts to the pavement. Some experts estimate that a 25 percent increase in smoothness can result in a 9 to 10 percent increase in the life of pavements.
Building smooth asphalt roads is simple and cost-effective. Keeping them that way is fast, easy and inexpensive.
References :