Materials used for highway noise barriers include galvanized steel sheets, fiberglass-reinforced plastic (FRP), acrylic, polycarbonate (PC), solar panels, and aluminum sheets. They are typically classified into metal louvered noise barriers, metal perforated noise barriers, acrylic noise barriers, fiberglass-reinforced plastic (FRP) noise barriers, solar panel noise barriers, lightweight concrete noise barriers, and foam aluminum noise barriers.
Metal Louver Noise Barrier:
The metal louver noise barrier consists of aluminum alloy louver blades, a galvanized steel backing plate, an H-beam support frame, sound-absorbing core material, single-tube rubber strips, and other components. The louver aperture design fully accounts for waterproofing and dustproofing requirements; the blades are angled at 45° to achieve sound reflection and absorption, ensuring that sound absorption performance remains unaffected in dusty or rainy conditions. The “louver structure + porous sound-absorbing system” delivers comprehensive performance in noise reduction, rain protection, ventilation, and durability.
This structure can also be configured as a composite sound barrier, with a transparent upper section (acrylic/PC) and a lower section consisting of metal louvered sound-absorbing panels, integrating sound absorption, natural lighting, and environmental beautification into a single solution.
Application Scenarios:
Highways / Urban Roads
Railways / High-Speed Rail
Industrial Parks
Coastal and High-Humidity Areas
Residential Areas
Urban Rail Transit
Advantages:
Excellent sound absorption performance (industry standard)
Excellent waterproofing and wind resistance
High structural strength, with resistance to aging and impact
High fire resistance, along with strong weather resistance, durability, and corrosion resistance
Excellent cost-performance ratio
Noise Reduction (Insertion Loss): ≥10–20 dB
Sound Insulation: ≥30–35 dB
Sound Absorption Coefficient: ≥0.7
Metal Micro-perforated Acoustic Barriers:
The Metal Micro-perforated Acoustic Barrier consists of An acoustic structure consisting of a thin plate perforated with small holes, with a cavity of a certain depth left between the plate and a rigid wall behind it, is known as a perforated resonant acoustic structure. Filling the cavity with acoustic material broadens the sound absorption frequency range.
This design can be used for modular sound barriers, featuring composite perforated panels at the top and bottom and a transparent laminated acrylic structure with opening windows in the middle, combining multiple functions such as sound absorption, natural lighting, and environmental beautification.
Application Scenarios:
Highways / Urban Roads
Railways / High-Speed Rail
Industrial Parks
Residential Areas
Noise Reduction (Insertion Loss): ≥10–25 dB
Sound Insulation: ≥25–40 dB
Sound Absorption Coefficient: ≥0.60
PMMA Acrylic Noise Barrier (Reinforced Acrylic)：
PMMA Acrylic sound barriers are acoustic structural systems formed by combining PMMA (polymethyl methacrylate) sheets as the primary facing material with steel structural columns (H-beams/channel beams). They consist of extruded colorless or tinted transparent PMMA sheets and are suitable for applications such as bridges, urban elevated roads, and scenic roads where high visual transparency is required. Their sound insulation performance exceeds that of ordinary glass but is inferior to sound-absorbing (metal/composite) barriers.
They are typically used in combination with other metal sound-absorbing panels to achieve a multifunctional effect that integrates sound absorption, natural lighting, and environmental beautification.
Application Scenarios:
Highways / Urban Roads
Railways / High-Speed Rail
Urban Rail Transit
Residential Areas
Advantages: Combines sound insulation, visual transparency, and aesthetic appeal; high transparency (key advantage); good sound insulation performance; weather resistance; lightweight. Easy to repair and replace; convenient installation.
The inner side of the acrylic panels can be reinforced to prevent bird strikes and effectively prevent flying animals from being misled.
Noise Reduction (Insertion Loss): ≥8–20 dB
Sound Insulation: ≥25–35 dB
Fiberglass-Reinforced Plastic (FRP) Noise Absorption Barriers:
Fiberglass-reinforced plastic (FRP) noise absorption barriers are composite sound barrier systems that use FRP as the panel or structural material and are filled with sound-absorbing material. They achieve sound absorption and noise reduction through a porous or perforated structure. FRP sound barriers offer excellent corrosion resistance and chemical stability, combined with superior durability and bending strength. They are resistant to deformation and have a lightweight design, which reduces the structural requirements for the foundation and support columns while facilitating on-site installation.
FRP sound barriers, also known as fiber-reinforced plastic barriers, are non-metallic structures. They feature an engineering plastic perforated panel on the front face, an extruded FRP panel on the back, and are filled with glass fiber batting. Their standout feature is excellent corrosion resistance, making them commonly used in coastal areas.
Application Scenarios:
Highways / Urban Roads
Railways / High-Speed Rail
Industrial Parks
Coastal and High-Humidity Areas
Bridge Engineering
Advantages: Excellent sound absorption performance, superior corrosion resistance, lightweight yet high-strength, strong weather resistance, high design flexibility, available in various colors and textures, customizable appearance (aesthetically pleasing), easy to transport, install, and maintain, and capable of withstanding harsh environments such as UV radiation and acid rain.
Noise Reduction (Insertion Loss): ≥12–28 dB
Sound Insulation: ≥25–38 dB
Sound Absorption Coefficient: ≥0.7–0.85
Photovoltaic Noise Barriers:
Photovoltaic noise barriers are innovative, eco-friendly structures that combine solar power generation with noise control. Building upon the design of traditional sound barriers, they integrate photovoltaic modules (PV modules) onto the surface or top of the barrier, generating electricity by absorbing solar energy while maintaining noise reduction capabilities. This design ingeniously combines solar panels with traditional sound barrier structures.
Application Scenarios:
Highways
Expressways
Industrial Parks
Advantages:
Noise Reduction + Power Generation (Core Competitive Advantage)
Compliance with Green Energy Policies
Enhanced Value of Infrastructure
Noise Reduction (Insertion Loss): ≥12–28 dB
Sound Insulation: 10–15 dB
Sound Absorption Coefficient: ≥
ECP Lightweight Concrete Noise Barriers:
ECP Lightweight Concrete Noise Barriers:Extruded Cement Panels (ECP) are hollow panels manufactured through vacuum high-pressure extrusion, primarily composed of cement, siliceous materials (such as silica sand), fibers (such as glass fiber), and lightweight aggregates.
Applications: Railways, urban roads.
Highways / Urban Expressways
High-Speed Rail / Intercity Rail
Industrial Sites / Boundary Noise Reduction
Landscape Sections (available in wood-grain or stone-texture finishes to blend with the environment).
Advantages: Excellent durability, good wind and seismic resistance, long service life, and a wide range of customizable colors and texture patterns.
Noise Reduction (Insertion Loss): ≥12–28 dB
Sound Insulation: 20–30 dB
Sound Absorption Coefficient: ≥0.85
Different materials vary in terms of noise reduction effectiveness, durability, and cost. Therefore, different types of sound barriers should be selected based on the specific project requirements.
LuoLu offers a wide range of sound barrier materials and boasts a highly professional technical team and state-of-the-art production equipment. We can recommend the optimal sound barrier materials and designs based on your project needs, environmental conditions, and budget, providing you with the most cost-effective solution.
Would you like us to help you choose the right sound barrier?