Noise barrier has
various names such as soundwall, noise wall, sound berm, sound barrier, or
acoustical barrier. It is an exterior structure designed to safeguard from
noise pollution. Population residing near roadways, railway and industrial
areas use these noise barriers as a source to control noise pollution. Use of
hybrid vehicles, improved automobile aerodynamics and low-noise paving
materials are a few methods that are being implemented to reduce noise
pollution. Various materials are used for manufacturing of sound barriers such
as masonry, earthwork, steel, concrete, wood, plastics, insulating wool, or
composites and with active materials such as solar photovoltaic panels to
generate electricity. Barriers with porous surface material and sound-dampening
content material are absorptive compared to hard surfaces such as masonry or
concrete which reflect more noise. Noise barriers are effective tools for noise
pollution but the use of noise barriers is not feasible in few geographic
locations. Cost and design of the noise pollution barriers are the key factors
involved in the choice of the noise barriers.
According to the
study “North
America Noise Barrier Industry Situation and Prospects Research report”,
noise barriers force the pollution from the surroundings to move up and over
the barrier creating the effect of an elevated source and enhancing vertical
dispersion of the noise cloud. Deceleration and the deflection of the noise
flow by the noise barrier forces the noise waves to disperse horizontally. Roadside
noise barriers witnessed a reduction in noise pollution concentration levels
along with air pollution. Use of noise barriers may reduce upto more than fifty
percent of noise pollution caused by various operations in the environment.
Noise barriers are
categorized based on the products types such as ground-mounted noise barrier,
structure-mounted noise barrier and others. Noise barriers are used at various
places such as construction, transportation, industrial sections, airport and
other noise polluting areas. The leading global noise barrier industry is
highly competitive due to the presence of many players. There is a stiff
competition based on the products, specification, capacity, production, and
price. Noise barrier leading players in North America market are Amcon Block
& Precast Incorporated, Armtec Infrastructure Incorporated, Cretex
Companies Incorporated, CRH PLC., Evonik Industries, Faddis Concrete Products,
Fort Miller Group Incorporated, Hoover Treated Wood Products Incorporated, RPM
International, Industrial Acoustics, Industrial Noise Control, Lafarge Holcim,
Smith-Midland, Spancrete Group Incorporated, Speed Fab-Crete, Valmont
Industries Incorporated and Wieser Concrete Products Incorporated.
Many development
policies and plans are implemented by the North American government, in
manufacturing processes and cost structures. Population in North America are
widely using noise barriers and demand for more such products to stay in a
healthy noise free environment. The advanced technologies help in manufacture
of quality and durable noise barriers. With the demand for noise barriers
increasing drastically, it was observed that the noise barrier market in North
America will continue growing over the next few years.
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