Concrete acoustic screens
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Noise Barriers
Railway Equipment
Urban Equipment
Road Equipment
ADIF Electrical Substations
Forestry Equipment
Concrete Noise Barriers
1. Introduction and Benefits
First and foremost, Insametal supplies and installs sound-absorbing concrete acoustic panels for railway and road infrastructure as a noise attenuation solution. Concrete panels are chosen for their stability and durability over time. Their design prevents excessive noise and is also highly durable. Consequently, the panel's composition is ideal for withstanding the test of time.
2. Composition and Materials
The concrete acoustic screen is composed of HA-45/P/12 reinforced concrete with silicon aggregate, with 6 mm B500S steel mesh every 15 cm and up to 13 cm of corrugated porous concrete, made from silica aggregate (4-8), washed sand, and cement. The panel is also supported and fitted between steel pillars, which are then galvanized and powder-coated.
3. Dimensions and Features
The panels vary in height and width: for example, the smallest is 0.5 meters, the medium-sized is 1 meter, and the largest is 2 meters. As for width, they are typically 4 meters apart from each other, with metal posts. Thus, the approximate weight of each panel is 2,200 kg.
4. Panel Structure
The panel's structure is divided into two layers: first, the sound-absorbing porous concrete, made of larger gravel, which gives it a porous texture and therefore better sound absorption. Second, the load-bearing conventional concrete, whose interior retains the metal mesh that provides stability and rigidity.
5. Pillars and Additional Options
In addition, the steel pillars contribute to the effective anchoring of the acoustic barrier. This steel has an S-275-JR or similar classification, and the powder-coated finish can be any RAL color. However, the system can optionally be fitted with a methacrylate top panel that acts as a smaller, transparent screen.
6. Additional Information
Finally, for official information on concrete acoustic screens, you can consult Royal Decree 1367/2007, which implements Law 37/2003 on Noise, establishing criteria for acoustic zoning and quality objectives. More details at BOE – Royal Decree 1367/2007.
