Referenced Test Methods & Standards

ASTM E1042-85 Acoustically Absorptive Materials Applied by Trowel or Spray

No

Properties

ASTM E1042 Classification & Requirements

Test method

1

Material type

Type I

Type II

Type III

UL classification

Material ingredient

Cementicious; cement or gypsum

Fibrous; mineral or organic fiber

Cellular plastic

2

NRC classification

NRC95

NRC90

NRC85

NRC80

NRC75

NRC70

NRC65

NRC60

NRC55

NRC50

NRC45

NRC40

ASTM C423

NRC≧

0.95

0.9

0.85

0.8

0.75

0.7

0.65

0.6

0.55

0.5

0.45

0.4

3

Flame spread index

Class A

Class B

Class C

ASTM E84

test value≦

25; smoke development≦50

75

200

4

Dust propensity

Category A

Category B

ASTM E859

test value

≦0.025g/ft2

>0.025g/ft2

5

Specimen mounting

Type 1

ASTM E795

 

FS SS-S-111B：Sound Controlling Materials（Trowel & spray application）

No

Properties

FS SS-S-111B Classification and Requirements

Test method

1

Material classification

Type I

Type II

Type III

UL classification

Ingredient

Cementicious

Fibrous

Synthetic polymeric

Dem=nsity classification

A

B

C

D

E

F

density (pcf)

18-20

>20

11-14

>14

2-12

>12

2

NRC classification

1

2

3

4

5

6

7

ASTM C423

NRC

≧0.9

0.8-0.89

0.7-0.79

0.6-0.69

0.5-0.59

0.4-0.49

<0.4

3

500Hz sound-absorption coefficient classification

101

102

103

104

105

106

107

ASTM C423

α

≧0.9

0.8-0.89

0.7-0.79

0.6-0.69

0.5-0.59

0.4-0.49

<0.4

4

Surface flame spread classification

Class A

Class B

Class C

ASTM E84

test value≦

25

75

200

5

Dust test

≦0.025g/ft2

ASTM E859

※ NRC (Noise Reduction Coefficients) = The average of 250Hz, 500Hz, 1000Hz and 2000Hz sound-absorption coefficients

※ α= sound absorption coefficient