Acoustic Insulation

Meets any STC requirements

acoustic

A commonly overlooked environmental problem in construction is noise pollution. The solid wall construction of a building made of Hebel AAC provides exceptional acoustic insulation. Its porous structure and high surface mass, coupled with its ability to dampen mechanical vibration energy, greatly reduces outside environmental noise pollution and the indoor echo effect (i.e. reflecting sound) in empty rooms, providing a quieter, more comfortable interior for the occupants.

 

Hebel AAC has exceptional sound insulation properties exceeding other solid materials of the same weight per surface area

 

✓Cellular structure
✓High surface mass
✓Mechanical vibration energy damping

Acoustic performance
Wall Asembly - without finishings
Acoustic information
STC
OITC
Hebel Wall 3 in AAC-4/500
36
32
Hebel Wall 4 in AAC-4/500
41
35
Hebel Wall 6 in AAC-4/500
44
38
Hebel Wall 8 in AAC-6/600 (GPA/700)
50
44
Hebel Wall 10 in AAC-4/500
50
42
Hebel Wall 12 in AAC-4/500
52
43
Notes:
STC Sound Transmissin Class
OITC Outdoor Indoor Transmission Class
GP4/AAC-4/AAC-6 Strength Class & Nominal Density
Testing in accordance to ASTM-E-90 "Standard Method for Laboratory Measurement of Airbond Sound Transmission Loss of Building Partitions."

 

Acoustic performance
Floor Systems - without finishings
Acoustic information
STC1
IIC2
Hebel AAC-6, 6" Floor Slab
463
---
Hebel AAC-6, 8" Floor Slab
503
---
6" Poured Concrete slab
534
274
8" Poured Concrete slab
554
304
4" LW concrete on metal deck (2½" concrete, 1½" metal deck)
434
204
6" LW concrete on metal deck (3" concrete, 3" metal deck)
514
214
8" Pre-stressed hollow core slab
534
284
8" Lightened Slab ( lightening Formwork 28" x 28" x 5" )
535
255
Notes:
1. STC = Sound Transmission Class - Testing in accordance to ASTM-E-90 "Standard Method for Laboratory Measurement of Airbone Sound Transmission Loss of Building Partitions."
2. IIC = Impact Insulation Class - Testing in accordance to ASTM-E-492 "Standard Test Method for Laboratory Measurement of Impact Sound Transmission through floor-ceiling assemblies Using the Tapping Machine"
3. According to test performed by Xella Mexicana at Acoustic Systems, Inc Laboratory (Austin, TX)
4. Reference: "Modern Steel Construction, The Sound of Silence" by Rob Kinchler, PE April 2009
5. Reference: "Cement of Concrete Association of New Zealand, Competitive Concrete Solutions" - Issue IB76 -

 

 

 

Acoustical Properties