Environmental-protection acoustical building panel and production method thereof
A building board and sound absorption technology, which is applied to building components, building structure, sound insulation and other directions, can solve the problems of poor compression resistance, complex preparation method, poor corrosion resistance, etc., and achieves good sound absorption effect and simple preparation process. , The effect of double-layer structure is strong
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[0022] Example 1
[0023] An environmentally friendly sound-absorbing building board, the board is a double-layer porous structure composed of a face material layer and a substrate layer, and the face material layer is made of construction waste recycled fine aggregate, coal gangue, cement, lime and sludge The substrate layer is prepared from construction waste recycled fine aggregate, cement and sludge; the thickness ratio of the substrate layer and the surface material layer is 1.25:1, and the mass ratio of the two is 4:1.
[0024] Among them, the parts by weight of the raw materials of the face material layer are: 30 parts of cement, 25 parts of sludge, 23 parts of coal gangue, 15 parts of construction waste recycled fine aggregate, and 7 parts of lime. In the substrate layer, the weight ratio of each raw material is: 35 parts of construction waste regenerated fine aggregate, 40 parts of cement and 25 parts of sludge.
[0025] The construction waste regenerated fine aggregate is...
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[0035] Example 2
[0036] An environmentally friendly sound-absorbing building material and its preparation method, the same as Example 1, except that the parts by weight of the raw materials of the face material layer are: 35 parts of cement, 25 parts of sludge, 22 parts of coal gangue, and construction waste regeneration 10 parts of fine aggregate and 8 parts of lime; in the substrate layer, the weight ratio of each raw material is: 45 parts of construction waste recycled fine aggregate, 35 parts of cement and 20 parts of sludge. The thickness ratio of the base material layer and the face material layer is 1.7:1, and the mass ratio of the base material layer mixture to the face material layer mixture is 3:1.
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[0037] Example 3
[0038] An environmentally friendly sound-absorbing building material and its preparation method, the same as Example 1, and the difference from Example 1 is that the parts by weight of the raw materials of the face material layer are: 25 parts of cement, 28 parts of sludge, and 24 parts of coal gangue. Parts, 18 parts of construction waste recycled fine aggregate, 5 parts of lime; in the substrate layer, the proportion of each raw material by weight is: 35 parts of construction waste recycled fine aggregate, 30 parts of cement and 35 parts of sludge substrate layer and The thickness ratio of the face material layer is 2.5:1, and the mass ratio of the base material layer mixture to the face material layer mixture is 3.5:1.
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