How about the noise reduction effect of Expressway Soundproof Wall@Expressway Soundproof Wall?
The general principles for the selection of materials for expressway metal soundproof walls are good noise reduction performance, safe and reliable structure, economical material price, low installation cost, durability, long service life, landscape coordination, and beautiful appearance.
The specific instructions are as follows:
(1) Large amount of sound insulation: the average sound insulation should not be less than 35dB;(2) High sound absorption coefficient: the average sound absorption coefficient should not be less than 0.84;
(3) Weather resistance and durability: The product should have water resistance, heat resistance, resistance to Ultraviolet rays, no performance degradation or abnormal quality caused by changes in rain temperature. The products are made of aluminum alloy coils, galvanized coils, glass wool, and H-steel columns.
(4) Beautiful appearance: You can choose a variety of colors and shapes to combine, coordinate with the surrounding environment, and form a beautiful landscape.
(5) Economy: Prefabricated construction improves work efficiency, shortens construction time, and saves construction costs and labor costs.
(6) Convenience: It is installed in parallel with other products, easy to maintain and update.
(7) Lightweight: The sound-absorbing panel series products have the characteristics of light weight, which can reduce the load-bearing load of elevated light rails and elevated roads, and can reduce the structural cost.
(8) Fire protection: Ultra-fine glass wool is used, which fully meets the requirements of environmental protection and fire protection specifications due to its high melting point and non-flammability.
(9) High strength: Combined with the different climatic conditions of various regions in my country, the virtual wind load is fully considered in the structural design. Increased strength by pressing grooves on the production line.
(10) Waterproof and dustproof: Waterproof and dustproof are fully considered in the material design, and its sound absorption performance will not be affected in the environment of dust or rain. Dust and drainage measures have been set up in the structure to avoid water accumulation inside the components. The sound absorption performance of the micro-perforated resonant cavity is not affected in the rain environment, and the noise reduction is particularly obvious for the medium and low frequency.
(11) Durable: The product design has fully considered the wind load of the road, the impact safety of traffic vehicles and the open-air anti-corrosion of full gas fake. The products are made of aluminum alloy coils, galvanized coils, glass wool, and H-steel columns with galvanized surfaces. No corrosion, no change in shape, sound absorption and sound insulation effect during the warranty period