An acoustically absorbent porous panel formed from a cured aqueous foamed cementitious material comprising on a wet basis of 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. The panel also has pores distributed within the cured material comprising about 75% to about 95% by volume of the material. The cement-based, foamed panel provides good acoustical performance with enhanced durability and moisture resistance.

Un panel poroso acústico absorbente formó de un material de cemento hecho espuma acuoso curado que abarcaba sobre una base mojada de el cerca de 53% al cerca de 68% por el cemento del peso, al cerca de 17% al cerca de 48% por el agua del peso, a cerca de 0.05% al cerca de 5% por la fibra del peso, y a cerca de 0.01% al cerca de 10% por el surfactant del peso. El panel también tiene poros distribuidos dentro del material curado que abarca el cerca de 75% al cerca de 95% por el volumen del material. El panel cemento-basado, hecho espuma provee de buen funcionamiento acústico resistencia realzada de la durabilidad y de la humedad.

 
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~ 00043