BACKGROUND Noise pollution is currently a major health risk factor for workers in industries. The aim of this study was to investigate noise pollution and implement a control intervention plan for blast furnace in a steel industry. METHODS The measurement of sound pressure level (SPL) along with frequency analysis was done with the sound-level-meter Cell-450. Personal noise exposure was perfo...

For the purpose of reducing impact noise transmission across floating floors in residential buildings, two main sound paths floor structure are considered: stud path and cavity path. The each is analysed separately: through predicted by statistical energy analysis (SEA). Then, insulation prediction model established. There reasonable agreement between theoretical measurement, results show that ...

The continuing development of industrialization and increasing population density has led to the emergence noise as an increasingly common problem, requiring various types sound absorption insulation methods address it. Meanwhile, recycling resources ensure a sustainable future for planet mankind is also required. Therefore, this study investigates potential corrugated cardboard resource reduct...

Abstract Sound transmission through panels is governed by the well-known mass law in mid-frequency range. This paper reveals a possibility of breaking this density-dominant strongly nonlinear interaction, while broadening bandwidth for effective sound insulation. For purpose, basic model established, and corresponding exact analytical methods bifurcation stability analyses are proposed. Influen...

In a developing and increasing world, the increment in consumption of natural resources brings environmental problems together. The use plant raw materials has great importance construction industry, which high rate. Increasing demand to develop sustainable environmentally friendly increased fibers building (sound absorption, heat sound insulation). fact that hemp fiber does not have water prod...

Noise is continuously treated as an annoyance to humans and indeed commotion contamination shows up within the environment, causing inconvenience. This likewise interesting engineering tactic that inclines develop this noise proliferation. The basics of sound-retaining proliferation, sound-absorbing properties, its variables were rarely considered by previous researchers. Thus, acoustic perform...

Abstract The integrated composite wallboard is a new type of prefabricated building enclosure made autoclaved aerated concrete (ALC) and rock wool panel, which can meet the thermal requirements cold areas in China without additional insulation. ALC divided into local four-sided supported plates by vertical horizontal ribs, makes have different sound insulation performance from single uniform ma...

Silica aerogels are popular in terms of production volume and real-world applications. Although the current market growth rate is driven exclusively by thermal insulation, may also be attractive for acoustic applications with potential aiding sound absorption/insulation. This paper a summary acoustics related studies silica aerogel-based products. It introduces aerogels, some characterization m...