A new cement was prepared which consisted of the composite porous sound absorbing material with portland cement, expanded perlite, ceramsite as main raw materials and some supplementary substances.

• 摘要以普通硅酸盐水泥、膨胀珍珠岩、陶粒主要原料，加以一定的辅助材料，研制出一种新型水泥基复合多孔吸声材料。