Noise Absorbing Aluminum Highway Sound Barrier Wall

• Type: Sound Barriers
• Acoustic Panel Type: Metal Acoustic Panels
• Eco-Friendly: E1
• Fireproof Grade: A1
• Surface Finishing: Painting
• Edge: Custom
• Model NO.: ASB
• Certification: ISO
• Color: Custom
• Product Name: Sound Noise Barrier
• Metal Sheet Material: Galvanized Steel/Aluminum
• Insert: Glass Wool
• Function: Noise Absorbing&Fire-Rating
• Size: Custom
• Special Service: Custom as Drawing
• Average Sound Absorbing: 25dB
• Sample: Avaliable
• Application Field: Highway&Bridge&Railway&Residential
• Warranty: 5 Years
• Transport Package: Plywood Box
• Specification: custom
• Trademark: MEISHUO
• Origin: Jiangsu, China
• HS Code: 73089000
• Production Capacity: 10000 Square Meters/Month

Product Description

Brief Introduction

A noise barrier (also called a soundwall, sound berm, sound barrier, or acoustical barrier) is an exterior structure designed to protect inhabitants of sensitive land use areas from noise pollution. Noise barriers are the most effective method of mitigating roadway, railway, and industrial noise sources - other than cessation of the source activity or use of source controls.

Theory of Design


The acoustical science of noise barrier design is based upon treating an airway or railway as a line source. The theory is based upon blockage of sound ray travel toward a particular receptor; however, diffraction of sound must be addressed. Sound waves bend (downward) when they pass an edge, such as the apex of a noise barrier. Further complicating matters is the phenomenon of refraction, the bending of sound rays in the presence of an inhomogeneous atmosphere. Wind shear and thermocline produce such inhomogeneities.

Sound Absorption Coefficient
 

Frequency(Hz)	100	125	160	200	250	315	400	500	630
Sound Absorption Coefficient a	0.21	0.24	0.36	0.41	0.64	0.81	0.98	1.02	0.96
Frequency(Hz)	800	1000	1250	1600	1600	2500	3150	4000	5000
Sound Absorption Coefficient a	0.91	0.96	1.05	1.12	1.12	1.10	1.04	0.99	0.94

Features


 

1, Soundproof function: sound insulation STC≥30-35
2, Noise absorption function: Using advanced centrifugal glass wool, Average noise reduction coefficient NRC≥0.95
3, Solid and steady: Using aluminum and steel post, wind resistance 1500N/m2
4, Anti-aging and anti-corrosion
5, we provide custom service as our customers' requirements
6. Aesthetic appearance---available in color options and shaping options
7. Economization---easy installation and money saved
8. Durability---good temperature stability, combustion and corrosion resistant
9. Self supporting--- mechanically located and therefore cannot suffer from adhesive failure
10. Application scope---railway, highway, city viaduct, residential quarter and related areas

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Packing Details



Packing Details : 1.pearl cotton as separation 2.carton for inner package 3.Container
Delivery Details : 1.Safety package
2.100% test before delivering (ensure the quality)
3.Item is shipped in about 15-30 working days against payment depends on the quantity 
4.Tracking number will be sent to you as soon as we ship the product 

Contact

Mike Chen
Nanjing MEISHUO Building Materials Co.,Ltd
ADD: No. 50, Dingjie, Pancheng, Pukou District, Nanjing, China
Web: http://njmeishuo.en.made-in-china.com
Tel: [phone]