• Concrete Removal
    Concrete Removal

Handheld or excavator mounted concrete breaker is a traditional mechanical equipment for concrete breaking and removal. Using such equipment will generate loud noise, with sound power levels generally range from 108 dB(A) to 122 dB(A). Nowadays, a number of commercially available quieter equipment or methods for concrete breaking or removal could be less noisy or could reduce the noise propagation. These include high pressure water jet system, handheld concrete crusher, medium duty breaker, blade saw, wire saw and noise enclosure.

Sound pressure level at 7 meters from equipment

 

Noise reduction for some mitigation measures for reference.

Noise reduction

Quieter Type Blade Saw

The contact between the saw blade and the workpiece creates vibration during sawing which causes high noise generation. Quieter type blade saw, such as noise reducing diamond blade, with higher speed and smoother blade reduces the excitation of vibration and hence the propagation of sound.

 

Courtesy of Modern Concrete Drill Cut Co., Ltd.

Courtesy of Hilti(Hong Kong) Ltd.

Sound pressure level in dB(A) at 7m from equipment 76-81dB(A)