Sound absorbing cementitious composition and method of making sa

Details Sound absorbing cementitious composition and method of making sa Sound absorbing cementitious composition and method of making sa

1997-05-16

1998-10-20

Marcheschi, Michael

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106679, 106680, 106681, 106682, 106675, 106705, 106719, 106726, 106122, 106DIG2, 106676, 106709, 252 62, 264 41, 264 453, 264 50, 264 51, C04B 3800, C04B 3810, C04B 2416

Patent

active

058241485

ABSTRACT:
The invention relates to an improved sound absorbing cementitious composition and method of making involving a preformed foam solution made from a surfactant, such as an ammonium salt of a sulfated linear alcohol ethoxylate surfactant, preblended with water at a dilution ratio in a range of water to surfactant of from about 40:1 to 10:1. Thereafter, the preformed foam solution is combined with components including cement(s), aggregate(s), water and optional additives. The composition provides for an open cellular surface capable of absorbing sound.

REFERENCES:
patent: 3989534 (1976-11-01), Plunguian et al.
patent: 4741782 (1988-05-01), Styron
patent: 5250578 (1993-10-01), Cornwell
patent: 5678363 (1997-10-01), Ogorchock et al.

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