2019 CSCE Annual Conference - Laval (Greater Montreal) Conference
Mr. George Naguib
Mr. Ahmed El-Mekawy
Mr. Athnasious Ghaly, American University in Cairo
Mr. Moustafa El Assaly, Mr
Ms. Reem Abou Ali
Dr. Mohamed N. Abou-Zeid, The American University in Cairo
Acoustic noise can be a major source of pollution particularly in densed residential areas. A research conducted in a busy neighborhood in Cairo, Egypt concluded that street noise exceeded the permissible limits at three different times of the day. Hence, the introduction of sound insulation materials to residential areas, among others, can help reduce noise without completely muting the exterior noise to maintain a level of awareness of the surrounding environment. The main purpose of this study is to help assess various means of sound insulation systems in structures at different levels of sound frequency intervals. Three different types of materials; natural cork, rockwool and blue foam, were investigated for their performance as sound insulating materials, along with their thermal insulation property. For the purpose of this investigation, a special control room was constructed using conventional cement bricks with conventional plastering mortar. A partition wall was built in the middle of the room to divide it into a source room and a receiving room. The insulation materials were installed on the partition wall. The acoustic insulation behavior was tested by setting monotone sounds at the same amplitude at various frequency intervals covering the human hearing range. The results demonstrated that each material had different acoustic insulation behavior under the various levels of sound frequencies tested. In general, cork has yielded the best sound insulating results while having the lowest conductivity. Recommendations are made as to how to improve sound insulation in residential buildings.