Plaster Products In The Application Of Indoor Ceiling

With the acceleration of the construction of national urbanization, aiming at restaurants, supermarkets, shopping malls, exhibition halls and other shared space decoration engineering, deepening the study on acoustical plaster products, create a good indoor acoustic environment, embody the space of human care is the purpose of the study.The through the study of the acoustic technology status, deconstruction of ceiling sound-absorbing strategy analysis and typical cases, use of aesthetics and the principles of acoustics, design practice of a new three-dimensional acoustical plaster products and application method, in indoor ceiling sound absorption and noise reduction.Named carrier design practice:ceiling plaster body.Design practice:the use of aesthetics and the basic acoustic theory, combined with "flat" perforated gypsum board perforated characteristics, absorption conception and design practice of space sound sucking body "polyhedral" absorption "stereo" acoustical plaster products. Design for the shape of the dome shaped, cylindrical, inverted trapezoidal. Using gypsum powder with turn over the mold making perforation cavity body and the inner wall of the cavity adhesion of porous sound absorbing materials and remaining cavity air layer, the formation of cavity resonance structure application in indoor ceiling. Design practice through professional test and with the same types of products of the sound absorption coefficient of the alignment and feasibility of applying methods and so on, have reached the expected sound-absorbing performance requirements. The use of size, aperture, perforation rate of the gypsum body can be used in the specific space height, size and noise level of the room.The installation of gypsum powder tune into a paste for the medium and the ceiling interface adhesion to form planar grid array. New installation method can save the traditional ceiling of the cumbersome process, to maintain the indoor floor space and physical space and psychological space more open. Suspension rate to sound-absorbing body expansion area is equal to the ceiling of the actual area of 35-45%.Gypsum ceiling sound-absorbing body according to test execution of the standard GB/T 18696.1-2004 Part 1 standing wave ratio method, after AWA6128A type standing wave tube tester. The test conclusion:Engineering noise reduction coefficient NRC=0.47, belonging to effective sound-absorbing materials and structures.Through theoretical research and practice, the paper reaches the conclusion: cavity resonance sound technical restrictions on the kinds of materials and cavity resonance sound absorption structure can use gypsum product modeling was applied to roof interface. Gypsum cavity thickness, hole size, hole rate, cavity back coating materials, reserved air scale layer is a cavity resonance sound absorption performance of the major determinants.The from the angle of decoration engineering application, to make up for the three-dimensional shape of the acoustical plaster products blank, founded the three-dimensional acoustical plaster products in the application rules of indoor ceiling, methods, skills, as well as into the modern sound-absorbing product market innovation and strategy.