Concrete acoustic material and manufacturing method thereof

The invention discloses a concrete acoustic material and a manufacturing method of the concrete acoustic material. The concrete acoustic material comprises 100 parts of cement, 120-180 parts of ceramsite, 0-1 part of polycarboxylate water reducer, 0-1.2 parts of silane waterproofing agent, 0-0.5 parts of polyester fiber, 0-0.3 parts of emulsion powder and 10-30 parts of water. The manufacturing method of the concrete acoustic material comprises the steps of burdening, molding, grouting, compression molding and demolding and maintaining. Compared with the prior art, the concrete acoustic material has the advantages that the mechanical property is high, the compression strength is more than 8MPa, the breaking strength is more than 2MPa; the specific gravity is light and is between 900-1100kg/m ; the sound suction frequency band is wide, the noise reduction coefficient is 0.85, can be more than 0.92 especially in the mid-high frequency band being more than 1250Hz, and is more than 1.04 in the frequency band being 500Hz. The concrete acoustic material not only can be applied to occasions such as high-speed railways, subways or urban railway systems, also can be used for building occasions with high noise reduction requirement, is convenient to construct and is safe and reliable.