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Sound Barrier
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The features and advantages of sound barriers
A sound barrier is an engineering structure used to reduce the transmission of noise and is widely applied in noise-sensitive areas such as highways, railways, industrial zones, and urban elevated Bridges. Its core function is to reduce the impact of noise on the surrounding environment by reflecting, absorbing or scattering sound waves. The following are its main features and advantages:
Main features
Material diversity
Sound barriers can be made of various materials according to different needs, including:
Metal sound barriers (galvanized steel plates, aluminum plates, stainless steel) - durable and easy to install.
Transparent sound barriers (acrylic sheets, PC sheets, laminated glass) - Good light transmittance, no obstruction to the line of sight.
Concrete/masonry sound barriers - Strong sound insulation performance, suitable for long-term fixed facilities.
Sound-absorbing sound barriers (porous sound-absorbing materials, such as rock wool, glass wool, and aluminum foam) - absorb noise rather than reflect it, reducing secondary pollution.
Composite material sound barriers (such as aluminum fiber boards, ceramic fiber boards) - have both sound insulation and sound absorption functions.
Flexible structural design
Upright type: The most common, suitable for use along highways and railways.
Folded corner type/arc shape: Enhances sound wave reflection and improves noise reduction effect.
Install sound-absorbing structures (such as T-shaped, Y-shaped, and mushroom-shaped) on the top to reduce sound wave diffraction and enhance the overall sound insulation performance.
Adjustable height
The height is usually 2 to 6 meters and can be adjusted according to the intensity of the noise source and the distance of the sensitive area.
Some sound barriers adopt a height-adjustable or modular design, which is convenient for maintenance or temporary use.
Integration of additional functions
Windproof function: Some sound barriers are designed as windproof walls to reduce the impact of crosswinds on vehicles.
Landscape beautification: It can be combined with greenery (vertical green walls) or artistic patterns to enhance the beauty of the city.
Anti-glare: The transparent sound barrier can reduce the glare from vehicle headlights and enhance driving safety.
Core advantages
Efficient noise reduction
It can reduce noise by 10 to 30 dB(A), and the specific effect depends on the material, height and distance.
Sound-absorbing sound barriers can reduce noise reflection and prevent noise from bouncing back to other areas.
Strong durability
Metal and concrete sound barriers are resistant to wind pressure and corrosion, and their service life can reach 20 to 30 years.
Transparent sound barriers (such as PC boards) are UV-resistant, impact-resistant and not prone to aging.
Easy installation
Modular design enables quick assembly and is suitable for new construction or renovation projects.
Some sound barriers adopt prefabricated structures, reducing on-site construction time.
Environmental protection and aesthetics
Sound-absorbing materials (such as rock wool and aluminum foam) are recyclable and meet green building standards.
Customizable in color and pattern, it can coordinate with the surrounding environment and even be part of the urban landscape.
Economy
Compared with building sound insulation renovations (such as installing soundproof Windows), sound barriers have a lower cost and a wider coverage.
The maintenance cost is low, requiring only regular cleaning or inspection of the fasteners.
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