Various performance indicators of sound barrier materials

Today, noise barrier manufacturers share some relevant content about various performance indicators of 

sound barrier materials. The comprehensive technical indicators of sound barrier materials must meet
relevant industry product standards.

The sound absorption performance index of the sound barrier material:

Good acoustic performance, efficient sound absorption and noise reduction, sound absorbing performance
of sound barrier material is measured according to GBJ47-1983 “Reverberation Room Method Sound
Absorption Coefficient Measurement Specification”, at 125HZ, 250HZ, 500HZ, 1000HZ, 2000HZ and 4000HZ
frequency The coefficients should not be less than 0.25, 0.40, 0.80, 0.95, respectively.

Sound barrier index of sound barrier material:

According to GBJ75-1984 “Specifications for Measurement of Sound Insulation in Buildings”, the sound
insulation of sound barriers should not be less than 30dB.

Performance indicators of snoring barrier materials:

It should be grade A according to the “Classification Method of Combustion Performance of Building
Materials”.

Freeze-thaw resistance indicators of snoring barrier materials:

 The freeze-thaw resistance performance shall be carried out in accordance with the method of 3.2.4
freeze-thaw resistance in 149-2003 “expanded polystyrene board thin plaster external wall thermal
insulation system”. After 30 cycles, the test specimen shall be free from spalling, cracking and layer
formation.