Reducing noise pollution by using new types of ecological composite materials

Industrial activities cause important environmental changes. It is relevant to observe that the impact of industrial activities on the environment depends on the type of technological process and on the product that is obtained, or on the efficiency of pollution control technologies. A known source for environmental pollution in urban areas or at the workplace is noise. Sound pressure level produces harmful effects on human health. There are several studies that have investigated noise pollution determining the World Health Organization to warn, to raise awareness and to promote actions against noise pollution. This paper aims to introduce innovative systems that absorb and attenuate the noise from industry, urban or extra-urban environment efficient and sustainable based on composite made by recycling solid waste. Research regarding absorptive properties of new types of ecological composite materials, composed of reinforcement materials from various wastes is presented in this paper. Are presented research on the absorbing properties of new types of ecological composite materials, which are based on use as reinforcement material of various wastes, which can affect the environment. Absorption sound capacity for new composite materials varies depending on the proportion and of the nature of the waste that is used. Both the absorbtion capacity for each composite materials represented by the absorbtion coefficient and the influention of the reinforcement material are presented in this paper. Thus the worldwide was taken a series of measures to reduce noise, as in the environment, and jobs.Upon joining the EU, our country is required to align the relevant legal provisions that are regulated by a series of measures to limit noise.