Absorption Coefficient Concrete Floor

Tables of random incidence absorption coefficients α.

Absorption coefficient concrete floor.

Concrete floor 0 01 0 03 0 05 0 02 0 02 0 02 0 02 marble floor 0 01 0 01 0 01 0 02 0 02 0 02 0 02 lightweight constructions and linings material octave band frequency in hz 125 250 500 1k 2k 4k 8k 2 13 mm plasterboard on steel frame. 100 of the sound would have a sound absorption coefficient of 1 0. The mean absorption coefficient can be. The total sound absorption in a room with.

Marble or glazed tile. Concrete unpainted rough finish 0 01. 40 m 2 fiberboard walls with absorption coefficient 0 3. Linoleum vinyl tile on concrete.

Wood parquet on concrete. Absorption coefficients of common building materials and finishes floor materials 125 hz 250 hz 500 hz 1 khz 2 khz 4 khz carpet 0 01 0 02 0 06 0 15 0 25 0 45 concrete unpainted rough finish 0 01 0 02 0 04 0 06 0 08 0 1 concrete sealed or painted 0 01 0 01 0 02 0 02 0 02. Absorption coefficients www akustik ua frequency hz material thickness 125 250 500 1000 2000 4000 masonry walls rough concrete 0 02 0 03 0 03 0 03 0 04 0 07 smooth unpainted concrete 0 01 0 01 0 02 0 02 0 02 0 05. Energy μ ρ μ en ρ mev cm 2 g cm 2 g 1 00000e 03 3 466e 03 3 456e 03 1 03542e 03 3 164e 03 3 156e 03 1 07210e 03 2 889e 03 2 880e 03 11 k 1 07210e 03 2 978e 03 2 968e 03 1 18283e 03 2 302e 03 2 295e 03 1 30500e 03 1 775e 03 1 769e 03.

If a generated sound level of 80 db is observed in one room and 30 db is measured in an adjacent. Concrete sealed or painted 0 01. 13 presents the comparison of nrc computed based on the sound absorption coefficients for the concrete or cement based materials of various densities. Vinyl tile or linoleum on concrete.

Table 2 summarizes the details of the sound absorption coefficient and fig. The effectiveness of wall construction as a means of sound absorption is tested in a similar manner as that of stc. It can be summarized that the cement based products which possess good absorption coefficient have relatively low. 4000 hz concrete or tile.

10 m 2 concrete floor with absorption coefficient 0 02. Sound transmission class stc provides an estimate of the acoustic performance of a wall in certain common airborne sound insulation applications the stc of a wall is determined by comparing sound transmission loss stl values at various frequencies to a standard contour stl is the decrease or attenuation in sound energy in db. A surface absorbing 35 of the sound would have a coefficient of 0 35. Floor materials 125 hz 250 hz 500 hz.

Floor materials 125 hz 250 hz 500 hz 1 khz 2 khz 4 khz. Determining sound transmission class stc for concrete masonry.