The present invention provides for an acoustically absorbent porous panel that is both rigid and resistant to sagging caused by moisture. The acoustically absorbent porous panel is comprised of at least two layers. The first layer is a facing layer formed from a cured aqueous foamed cementitious material. The foamed cementitious material comprises on a wet basis about 53% to about 68% by weight cement, about 17% to about 48% by weight water, about 0.05% to about 5% by weight fiber, and about 0.01% to about 10% by weight surfactant. Additionally, pores distributed within the cured material comprising about 75% to about 95% by volume of the material. The second layer is a backing layer that is affixed to the facing layer.

La actual invención preve un panel poroso acústico absorbente que sea rígido y resistente a la comba causada por la humedad. El panel poroso acústico absorbente se abarca por lo menos de dos capas. La primera capa es los revestimientos acoda formado de un material de cemento hecho espuma acuoso curado. El material de cemento hecho espuma abarca sobre una base mojada cerca de el 53% al cerca de 68% al lado del cemento del peso, al cerca de 17% al cerca de 48% al lado del agua del peso, a cerca de 0.05% al cerca de 5% al lado de la fibra del peso, y a cerca de 0.01% al cerca de 10% al lado del surfactant del peso. Además, poros distribuidos dentro del material curado que abarca el cerca de 75% al cerca de 95% por el volumen del material. La segunda capa es una capa del forro que se pone a la capa de los revestimientos.

 
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