Technical Features

Technical Hebel AAC properties

Characteristics

Block/Panels
 
AAC-4
AAC-6
Units
Notes
Compressive strength (f´aac)
580
870
psi
For design
Nominal Density
31
37
pcf
Dry
Design weight
37
45
pcf
---
Moisture content (average)
8
8
%
by mass
Modulus of Elasticity
295,780
377,246
psi
---
Drying shrinkage
0.25
0.25
in/ft
---
Thermal conductivity
0.9124
0.9811
Btu in/ft² h °F
---
Thermal expansion coefficient
8x10-6
8x10-6
K-1
---
Modulos of rupture (MOR)

115

142
psi
---
Resistance to freezing
0.979
0.979
---
---
Allowable bearning stress
348
523
psi
---

September 2013

 

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 -

 

Thermal Performance - R Values
Thickness in (in)*
AAC-4
AAC-6
R-Value
R-Value
(ft2hF/Btu)
(ft2hF/Btu)
4" (3 7/8)
4.30
4.00
5" (4 7/8)
5.39
5.01
6" (5 7/8)
6.46
6.01
7" (6 7/8)
7.55
7.02
8" (7 7/8)
8.62
8.02
10" (9 13/16)
10.78
10.03
12" (11 13/16)
12.95
12.03
* Nominal (real) dimension.
AAC-4 Thermal conductivity (K) = 0.9124 Btu in/ft2 h°F in accordance with ASTM-C-518-04
AAC-6 Thermal conductivity (K) = 0.9811 Btu in/ft2 h°F in accordance with ASTM-C-518-04