Sound absorbing cementitious composition and method of making same
    33.
    发明授权
    Sound absorbing cementitious composition and method of making same 失效
    吸声水泥组合物及其制备方法

    公开(公告)号:US5824148A

    公开(公告)日:1998-10-20

    申请号:US857851

    申请日:1997-05-16

    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.

    Abstract translation: 本发明涉及一种改进的吸音胶结组合物及其制备方法,该方法涉及由表面活性剂制成的预制泡沫溶液,所述表面活性剂例如硫酸化直链醇乙氧基化物表面活性剂的铵盐与水预先混合,其水的范围为 表面活性剂为约40:1至10:1。 此后,预成型泡沫溶液与包括水泥,骨料,水和任选的添加剂的组分组合。 该组合物提供能够吸收声音的开放的细胞表面。

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