ABSORPTION MEASUREMENTS FOR BAUX ACCORDING TO SS-EN …

1 (7) 16-066-R1

Report 16-066-R1 2016-04-11 7 pages, 11 appendices

Akustikverkstan AB, Fabriksgatan 4, 531 30 Lidköping, tel +46 510 - 911 44, SWEDEN [email protected] Direct: +46 510 78 54 03

ABSORPTION MEASUREMENTS FOR BAUX ACCORDING TO SS-EN ISO 354:2003 AND SS-EN ISO 11654:1997

CONCLUSIONS The sound absorption for a number of products from Baux has been measured according to the reverberation room method (SS-EN ISO 354:2003) and evaluated according to SS-EN ISO 11654:1997. The results as weighted sound absorption coefficient and sound absorption class are presented in the table below. In the table, the value for NRC (Noise Reduction Coefficient) and SAA (Sound Absorption Average) according to ASTM C423 is also presented.

Measurement protocol/Test object Mounting αw Absorption class

SAA NRC

M1 Baux Pixel 3D A (direct fixing) 0.5(MH) D 0.62 0.60

M2 Baux 25 mm A (direct fixing) M3 E-200 M4 E-400 M5 E-655

0.30(H) 0.50(H) 0.40(H) 0.45(H)

D D D D

0.41 0.46 0.43 0.40

0.40 0.45 0.45 0.40

M6 Baux 25 mm+Exclusive 40 mm B A (direct fixing) M7 E-200 M8 E-400 M9 E-675

1.00 0.90 0.90 0.90

A A A A

0.95 0.91 0.88 0.88

0.95 0.90 0.90 0.90

1. CLIENT Baux, Sankt Eriksgatan 106, 113 31 Stockholm Contact: Fredrik Franzon, +46 70 300 29 55, [email protected].

2. ASSIGNMENT To measure sound absorption coefficient for a number of different solutions from Baux according to SS-EN ISO 354:2003 and evaluate the results according to SS-EN ISO 11654:1997. Evaluation of NRC and SAA according to ASTM C423 shall also be included.

2 (7) 16-066-R1

3. TEST OBJECTS The Baux products are based on Träullit, an absorber made from wood fibre and cement. In one setup, it was combined with a mineral wool sound absorber.

A number of measurements were performed with an air gap behind the absorber. The total construction height, which is the sum of the absorber and air gap thickness, is stated in the measurements. Baux Pixel 3D Small tiles (290x290 mm) in three different thicknesses (25, 50 and 70 mm) were placed directly on the floor (type A mounting).

Figure 1: Baux Pixel 3D, close up

Figure 2: Baux Pixel 3D

Baux 25 mm Large tiles (1200x600) of 25 mm Träullit were measured in a grid for suspended ceilings at different construction heights (direct fixing, 200, 400 and 655 mm)

Figure 3: Baux 25 mm

3 (7) 16-066-R1

Baux 25 mm with Parafon Exclusive 40 mm (edge B) Large tiles (1200x600) of 25 mm Träullit on top of a 40 mm Parafon Exclusive (edge B, 140 kg/m3) were measured in a grid for suspended ceilings at different construction heights (direct fixing, 200, 400 and 675 mm).

Figure 4: Baux 25 mm on top of Parafon Exclusive,

close up with one Baux tile removed.

Figure 5: Baux 25 mm on top of Parafon Exclusive

4. MEASUREMENT PROCEDURE The absorption measurements were performed according to the standard SS-EN ISO 354:2003. The measurements were made with three speaker positions and four microphone positions. The results for absorption coefficient were evaluated according to SS-EN ISO 11654:1997. The test specimen area fulfils the requirements in SS-EN ISO 354:2003.

The measurements were performed by Johan Jernstedt 2016-04-07 in Akustikverkstan's reverberation room in Skultorp, Skövde, Sweden. More information on the test facilities can be found in Appendix 2.

4 (7) 16-066-R1

5. MEASUREMENT EQUIPMENT Table 1 lists the equipment used during the measurements. The equipment fulfils class 1 according to SS-EN 61672-1, 60942 and 61260. Date for the latest calibration is available in the instrument journal of Akustikverkstan.

Instrument Manufacture and type Serial number

Internal designation

Measurement computer

HP ZBook DA02

Front end National Instruments NI 9234 195551B-01L-1918620

AN05

Microphone Roga MI-17 592 MI04 Microphone Roga MI-17 593 MI05 Microphone Roga MI-17 594 MI06 Microphone Roga MI-17 595 MI07 Speaker IMA Kub 1 8 HÖ7 Speaker IMA Kub 1 9 HÖ8 Speaker IMA Kub 1 10 HÖ9 Equalizer Monacor MEQ-2152 - Lab Amplifier Denon POA-2200 - Lab

Table 1: Equipment used during the measurements.

6. RESULTS The weighted sound absorption coefficient and sound absorption class for the applicable measurements are listed in table 2. Detailed measurement results for all test specimens are available in the measurement protocols belonging to this report 16-066-M1 to M9. The results are only valid for the tested samples.

Measurement protocol/Test object Mounting αw Absorption class

SAA NRC

M1 Baux Pixel 3D A (direct fixing) 0.5(MH) D 0.62 0.60

M2 Baux 25 mm A (direct fixing) M3 E-200 M4 E-400 M5 E-655

0.30(H) 0.50(H) 0.40(H) 0.45(H)

D D D D

0.41 0.46 0.43 0.40

0.40 0.45 0.45 0.40

M6 Baux 25 mm+Exclusive 40 mm B A (direct fixing) M7 E-200 M8 E-400 M9 E-675

1.00 0.90 0.90 0.90

A A A A

0.95 0.91 0.88 0.88

0.95 0.90 0.90 0.90

Table 2: Results according to SS-EN ISO 11654:1997 and ASTM C423 for the different materials from Baux.

5 (7) 16-066-R1

7. COMMENTS AND INTERPRETATIONS The presented values for SAA and NRC are part of the American sound absorption measurement standard ASTM C423 and should be regarded as complementary information. SAA is calculated as the average of the sound absorption coefficients in the third octave bands 200-2500 Hz. NRC is calculated as the average of the sound absorption coefficients in the octave bands 250-2000 Hz rounded to the nearest multiple of 0.05. As the reverberation times were measured in third octave bands only, the value is based on the average of third octave band data. A comparison of the sound absorption for the Baux 25 mm at different construction heights is presented in figure 6.

Figure 6: The sound absorption of Baux 25 mm at different construction heights.

0,00#

0,20#

0,40#

0,60#

0,80#

1,00#

1,20#

50# 63# 80# 100# 125# 160# 200# 250# 315# 400# 500# 630# 800# 1000#1250#1600#2000#2500#3150#4000#5000#

Soun

d&ab

sorp,o

n&coeffi

cien

t&

Frequency&(Hz)&

Sound&absorp,on&Baux&25&mm&

Baux#25#mm,#direct#fixing#

Baux#25#mm,#E:200#

Baux#25#mm,#E:400#

Baux#25#mm,#E:655#

6 (7) 16-066-R1

A comparison of the sound absorption for the Baux 25 mm on top of a 40 mm Parafon Exclusive at different construction heights is presented in figure 7.

Figure 7: The sound absorption of Baux 25 mm with Parafon Exclusive 40 mm at different construction heights.

8. DEVIATIONS FROM THE TEST PROCEDURE The temperature during the measurement was between 13 and 17° C. According to ISO 354, the temperature shall be above 15° C. The material type does not change properties due to this temperature deviation and the measurements are judged to be unaffected.

0,00#

0,20#

0,40#

0,60#

0,80#

1,00#

1,20#

50# 63# 80# 100# 125# 160# 200# 250# 315# 400# 500# 630# 800# 1000#1250#1600#2000#2500#3150#4000#5000#

Soun

d&ab

sorp,o

n&coeffi

cien

t&

Frequency&(Hz)&

Sound&absorp,on&Baux&25&mm&with&Parafon&Exclusive&40&mm&

Baux#25#mm#with#Parafon#Exclusive#40#mm,#direct#fixing#

Baux#25#mm#with#Parafon#Exclusive#40#mm,#EB200#



7 (7) 16-066-R1

9. MEASUREMENT UNCERTAINTY The uncertainties in the measured sound absorption coefficients have been estimated to the values in table 3. The uncertainty corresponds to one standard deviation.

50 Hz 63 Hz 80 Hz 100 Hz 125 Hz 160 Hz 200 Hz ± 0,10 ± 0,08 ± 0,07 ± 0,06 ± 0,05 ± 0,04 ± 0,03

250 Hz 315 Hz 400 Hz 500 Hz 630 Hz 800 Hz 1 kHz ± 0,03 ± 0,03 ± 0,03 ± 0,03 ± 0,03 ± 0,03 ± 0,03

1,25 kHz 1,6 kHz 2 kHz 2,5 kHz 3,15 kHz 4 kHz 5 kHz ± 0,03 ± 0,03 ± 0,03 ± 0,03 ± 0,03 ± 0,03 ± 0,03

Table 3: Measurement uncertainty for each third octave. This report should always be used in its complete context, even though the measurement protocols may be used independently. Johan Jernstedt Master of Science, Civil engineering Reviewed by Anders Grimmehed, 2016-04-11

B-1 (2) 16-066-R1

APPENDIX 1: MEASURED REVERBERATION TIMES

f(Hz) Empt

y (m

orni

ng)

Bau

x 3D

Pix

el, 2

5/50

/70

mix

Empt

y (a

ftern

oon)

Bau

x 25

mm

, dire

ct fi

xing

Bau

x 25

mm

, E-2

00

Bau

x 25

mm

, E-4

00

Bau

x 25

mm

, E-6

55

Bau

x 25

mm

with

Par

afon

Exc

lusi

ve

40 m

m, d

irect

fixi

ng

Bau

x 25

mm

with

Par

afon

Exc

lusi

ve

40 m

m, E

-200

Bau

x 25

mm

with

Par

afon

Exc

lusi

ve

40 m

m, E

-400

Bau

x 25

mm

with

Par

afon

Exc

lusi

ve

40 m

m, E

-675

50 9.29 8.32 9.36 9.33 7.95 7.21 6.20 9.29 6.06 5.61 5.57 63 9.10 7.75 8.98 8.62 7.33 7.03 6.35 7.75 6.34 5.87 5.89 80 8.59 7.13 8.41 7.43 6.67 5.67 4.57 6.33 5.08 4.38 4.26 100 7.56 6.21 7.50 6.80 5.21 4.40 4.86 5.05 3.91 3.90 4.04 125 6.63 5.46 6.67 6.03 5.17 4.16 4.01 4.48 3.03 3.42 3.64 160 5.61 4.17 5.69 5.00 4.10 3.49 3.48 3.24 2.74 2.86 2.99 200 5.61 4.17 5.64 4.80 3.74 3.30 3.68 2.69 2.62 2.81 2.97 250 5.41 3.88 5.39 4.67 3.11 3.12 3.98 2.31 2.50 2.68 2.83 315 5.69 3.70 5.59 4.41 2.78 3.18 3.61 2.16 2.43 2.51 2.47 400 5.35 3.24 5.29 3.94 2.70 3.46 3.12 2.00 2.21 2.31 2.29 500 4.89 2.86 4.80 3.36 2.75 3.24 3.14 1.97 2.06 2.07 2.07 630 4.41 2.34 4.44 3.07 2.79 2.83 2.93 1.85 1.89 1.87 1.88 800 4.75 2.16 4.75 3.07 3.10 2.97 3.01 1.81 1.81 1.80 1.78 1000 4.60 2.02 4.77 2.78 3.03 2.88 2.94 1.84 1.87 1.86 1.83 1250 4.07 1.95 4.11 2.27 2.63 2.66 2.65 1.77 1.77 1.77 1.76 1600 3.77 1.96 3.80 1.96 2.51 2.47 2.45 1.84 1.84 1.84 1.83 2000 3.32 1.80 3.37 1.88 2.22 2.19 2.18 1.76 1.75 1.76 1.75 2500 2.96 1.60 2.99 1.82 1.95 1.94 1.93 1.65 1.65 1.64 1.65 3150 2.54 1.44 2.56 1.77 1.68 1.66 1.65 1.50 1.51 1.51 1.51 4000 2.14 1.33 2.14 1.57 1.44 1.43 1.41 1.31 1.31 1.32 1.29 5000 1.70 1.10 1.70 1.24 1.20 1.21 1.20 1.10 1.10 1.10 1.10 Test area (m2) 0 10 0 10 10 10 10 10 10 10 10 Temperature (°C) 14.5 14.7 15.1 16.5 16.8 17.4 17.6 13.5 13.6 13.6 13.7 RH (%) 54.3 53.2 52.3 49.9 49.2 48.2 47.7 57.5 57.1 57.0 57.0

B-2 (2) 16-066-R1

APPENDIX 2: INFORMATION ABOUT THE REVERBERATION ROOM

The reverberation room is rectangular, measuring Length x Width x Height = 5,85 x 4,65 x 7,35 m. The room volume is 200 m3 and the total area of the walls, ceiling and floor is 209 m2. There are 22 diffusors (size 0,775 x 1,25 m) randomly installed in the room. The reverberation time between 50 and 200 Hz is controlled with membrane absorbers on the walls. The test specimen is put on the floor on the mounting area (10 m2, 2.6 x 3.85 m) according to figure B2.1. The mounting area consists of a concrete slab that can be lowered up to 700 mm below the floor. Test specimen

Figure B2.1: Plane drawing of the reverberation room with the test specimen put on the mounting area.

Baux 3D Pixel, 25/50/70 mixSOUND ABSORPTION COEFFICIENT ACCORDING TO ISO 354 AND ISO 11654Measurement of sound absorption coefficient in a reverberation room

Report number:

16-066-M1Date2016-04-08

Frequencyf

[Hz]

Sound absorptioncoefficient��

50 0.04

63 0.06 0.05

80 0.08

100 0.09

125 0.11 0.15

160 0.20

200 0.20

250 0.24 0.25

315 0.31

400 0.40

500 0.47 0.50

630 0.66

800 0.82

1000 0.90 0.85

1250 0.87

1600 0.79

2000 0.83 0.85

2500 0.92

3150 0.97

4000 0.93 1.00

5000 1.04

�� = 0.50(MH)

Absorption class = D

Client:Manufacturer:

Product identification:

Description of test specimen:

BauxTräullit

Baux 3D Pixel

A mix of 25, 50 and 70 mm tiles (0.29x0.29 m) placed directly on floor (type A mounting).

Reverberation room volume:Temperature: (empty:Air humidity: (empty:Air pressure: (empty:Size of specimen:

Measurement date:Measured by:

14.753

97.310

20014.5

5497.3

m3

°C)°C% %)

kPa)kPam2

2016-04-07Johan Jernstedt

Frequency band (Hz) 63 125 250 500 1k 2k 4k

Abso

rptio

n co

effic

ient

(-)

0

0.2

0.4

0.6

0.8

1.0

1.2Test sample�pReference curve

Baux 25 mm, direct fixingSOUND ABSORPTION COEFFICIENT ACCORDING TO ISO 354 AND ISO 11654Measurement of sound absorption coefficient in a reverberation room

Report number:

16-066-M2Date2016-04-08

Frequencyf

[Hz]


50 0.00

63 0.01 0.00

80 0.05

100 0.04

125 0.05 0.05

160 0.08

200 0.10

250 0.09 0.10

315 0.15

400 0.21

500 0.29 0.25

630 0.32

800 0.37

1000 0.48 0.50

1250 0.63

1600 0.80

2000 0.76 0.75

2500 0.69

3150 0.57

4000 0.56 0.60

5000 0.72

�� = 0.30(H)





BauxTräullit

Baux 25 mm

Absorber tiles 1200x600x25 mm placed in grid for suspended ceilingdirectly on floor (type A mounting).



16.549.997.3

10

20015.152.397.3

m3

°C)°C% %)

kPa)kPam2



Abso

rptio

n co

effic

ient

(-)

0

0.2

0.4

0.6

0.8

1.0


Baux 25 mm, E-200SOUND ABSORPTION COEFFICIENT ACCORDING TO ISO 354 AND ISO 11654Measurement of sound absorption coefficient in a reverberation room

Report number:

16-066-M3Date2016-04-08

Frequencyf

[Hz]


50 0.06

63 0.08 0.10

80 0.10

100 0.19

125 0.14 0.20

160 0.22

200 0.29

250 0.44 0.45

315 0.58

400 0.59

500 0.50 0.50

630 0.43

800 0.36

1000 0.39 0.40

1250 0.44

1600 0.43

2000 0.50 0.50

2500 0.57

3150 0.66

4000 0.74 0.75

5000 0.80

�� = 0.50(H)





BauxTräullit

Baux 25 mm

Absorber tiles 1200x600x25 mm placed in grid for suspended ceilingwith a total construction height of 200 mm (type E-200 mounting).



16.849

97.310

20015.1

5297.3

m3

°C)°C% %)

kPa)kPam2



Abso

rptio

n co

effic

ient

(-)

0

0.2

0.4

0.6

0.8

1.0



Report number:

16-066-M4Date2016-04-08

Frequencyf

[Hz]


50 0.10

63 0.10 0.15

80 0.18

100 0.30

125 0.29 0.30

160 0.36

200 0.40

250 0.43 0.40

315 0.43

400 0.32

500 0.32 0.35

630 0.41

800 0.40

1000 0.44 0.40

1250 0.42

1600 0.45

2000 0.51 0.50

2500 0.58

3150 0.68

4000 0.75 0.75

5000 0.80

�� = 0.40(H)





BauxTräullit

Baux 25 mm




17.448.297.3

10

20015.152.397.3

m3

°C)°C% %)

kPa)kPam2



Abso

rptio

n co

effic

ient

(-)

0

0.2

0.4

0.6

0.8

1.0



Report number:

16-066-M5Date2016-04-08

Frequencyf

[Hz]


50 0.17

63 0.15 0.20

80 0.32

100 0.23

125 0.32 0.30

160 0.36

200 0.30

250 0.21 0.25

315 0.31

400 0.42

500 0.35 0.40

630 0.37

800 0.39

1000 0.42 0.40

1250 0.43

1600 0.46

2000 0.52 0.50

2500 0.59

3150 0.69

4000 0.79 0.75

5000 0.80

�� = 0.45(H)





BauxTräullit

Baux 25 mm




17.647.797.3

10

20015.152.397.3

m3

°C)°C% %)

kPa)kPam2



Abso

rptio

n co

effic

ient

(-)

0

0.2

0.4

0.6

0.8

1.0


Baux 25 mm with Parafon Exclusive 40 mm, direct fixingSOUND ABSORPTION COEFFICIENT ACCORDING TO ISO 354 AND ISO 11654Measurement of sound absorption coefficient in a reverberation room

Report number:

16-066-M6Date2016-04-08

Frequencyf

[Hz]


50 0.00

63 0.06 0.05

80 0.13

100 0.21

125 0.24 0.30

160 0.43

200 0.64

250 0.81 0.80

315 0.93

400 1.02

500 0.98 1.00

630 1.03

800 1.12

1000 1.09 1.00

1250 1.06

1600 0.92

2000 0.89 0.90

2500 0.90

3150 0.91

4000 0.98 1.00

5000 1.08

�� = 1.00

Absorption class = A




BauxTräullit and Paroc

Baux 25 mm, Parafon Exclusive 40 mm edge B

Absorber tiles 1200x600x25 mm placed in grid for suspended ceilingon top of 40 mm mineral wool tiles (140 kg/m3) directly on floor.



13.557.597.3

10

20015.152.397.3

m3

°C)°C% %)

kPa)kPam2



Abso

rptio

n co

effic

ient

(-)

0

0.2

0.4

0.6

0.8

1.0


Baux 25 mm with Parafon Exclusive 40 mm, E-200SOUND ABSORPTION COEFFICIENT ACCORDING TO ISO 354 AND ISO 11654Measurement of sound absorption coefficient in a reverberation room

Report number:

16-066-M7Date2016-04-08

Frequencyf

[Hz]


50 0.19

63 0.15 0.20

80 0.25

100 0.40

125 0.59 0.55

160 0.62

200 0.67

250 0.70 0.70

315 0.76

400 0.86

500 0.91 0.90

630 0.99

800 1.12

1000 1.07 1.00

1250 1.05

1600 0.92

2000 0.91 0.90

2500 0.90

3150 0.90

4000 0.98 1.00

5000 1.08

�� = 0.90







Absorber tiles 1200x600x25 mm placed in grid for suspended ceiling on top of 40 mm mineral wool tiles (140 kg/m3) with a total constructionheight of 200 mm (type E-200 mounting).



13.657.197.3

10

20015.152.397.3

m3

°C)°C% %)

kPa)kPam2



Abso

rptio

n co

effic

ient

(-)

0

0.2

0.4

0.6

0.8

1.0



Report number:

16-066-M8Date2016-04-08

Frequencyf

[Hz]


50 0.23

63 0.19 0.25

80 0.36

100 0.40

125 0.47 0.50

160 0.57

200 0.58

250 0.61 0.65

315 0.72

400 0.80

500 0.90 0.90

630 1.01

800 1.13

1000 1.08 1.00

1250 1.05

1600 0.92

2000 0.90 0.90

2500 0.90

3150 0.90

4000 0.97 1.00

5000 1.06

�� = 0.90










13.657

97.310

20015.152.397.3

m3

°C)°C% %)

kPa)kPam2



Abso

rptio

n co

effic

ient

(-)

0

0.2

0.4

0.6

0.8

1.0



Report number:

16-066-M9Date2016-04-08

Frequencyf

[Hz]


50 0.24

63 0.19 0.25

80 0.38

100 0.37

125 0.41 0.45

160 0.52

200 0.52

250 0.55 0.60

315 0.74

400 0.81

500 0.90 0.90

630 1.01

800 1.15

1000 1.10 1.00

1250 1.06

1600 0.92

2000 0.90 0.90

2500 0.89

3150 0.90

4000 1.02 1.00

5000 1.08

�� = 0.90










13.757

97.310

20015.152.397.3

m3

°C)°C% %)

kPa)kPam2



Abso

rptio

n co

effic

ient

(-)

0

0.2

0.4

0.6

0.8

1.0


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ABSORPTION MEASUREMENTS FOR BAUX ACCORDING TO SS-EN …