Characterization of the sound insulation properties of a two-layers lightweight concrete innovative façade

Calleri, Cristina; Astolfi, Arianna; Shtrepi, Louena; Prato, Andrea; Schiavi, Alessandro; Zampini, Davide; Volpatti, Giovanni

doi:10.1016/j.apacoust.2018.10.003

Cited by 28 publications

(13 citation statements)

References 6 publications

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“…However, in order for a single-layer reinforced concrete wall to provide standard sound insulation for urban conditions, it is necessary to ensure that its thickness is more than 1 m, which is very expensive and significantly reduces the internal space [ 165 ]. Therefore, the use of multilayer wall systems for building facades is very relevant [ 166 ]. Figure 11 shows a clear model for the construction of RC walls with extremely high acoustic insulation.…”

Section: Building Componentsmentioning

confidence: 99%

Acoustic Properties of Innovative Concretes: A Review

et al. 2021

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Concrete is the most common building material; therefore, when designing structures, it is obligatory to consider all structural parameters and design characteristics such as acoustic properties. In particular, this is to ensure comfortable living conditions for people in residential premises, including acoustic comfort. Different types of concrete behave differently as a sound conductor; especially dense mixtures are superior sound reflectors, and light ones are sound absorbers. It is found that the level of sound reflection in modified concrete is highly dependent on the type of aggregates, size and distribution of pores, and changes in concrete mix design constituents. The sound absorption of acoustic insulation concrete (AIC) can be improved by forming open pores in concrete matrices by either using a porous aggregate or foam agent. To this end, this article reviews the noise and sound transmission in buildings, types of acoustic insulating materials, and the AIC properties. This literature study also provides a critical review on the type of concretes, the acoustic insulation of buildings and their components, the assessment of sound insulation of structures, as well as synopsizes the research development trends to generate comprehensive insights into the potential applications of AIC as applicable material to mitigate noise pollution for increase productivity, health, and well-being.

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Section: Building Componentsmentioning

confidence: 99%

Acoustic Properties of Innovative Concretes: A Review

et al. 2021

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“…These solutions' results are appropriate for several outdoor applications dealing with railway noise and traffic noise reductions and feature a spectrum of interest in the range of 125 to 4000 Hz [46]. Moreover, the investigated mounting systems could be integrated with structural multilayer building facades [47,48].…”

Section: Discussionmentioning

confidence: 99%

More Than Just Concrete: Acoustically Efficient Porous Concrete with Different Aggregate Shape and Gradation

et al. 2021

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The interest in the use of resistant acoustic materials has put further attention on the use of porous concrete in the building industry. This work investigates the acoustic properties of four different mix designs of porous concrete obtained with two types of aggregates, that is, normal weight and lightweight aggregates. The assessment of the sound-absorbing performances has been conducted in the small-scale reverberation room (SSRR) at Politecnico di Torino (Italy), in agreement with the procedure indicated in the ISO 354 Standard. For each concrete type, three panel thicknesses, i.e., 20 mm, 40 mm, and 60 mm, were tested. Moreover, different mounting conditions were investigated, considering the combination of single panels in multiple layers, adding an air gap between the panel and the backing, and inserting a layer of rock wool in the air gap itself. The results show weighted absorption coefficients (αw) in the range of 0.30 to 0.75 depending on the thickness and mounting conditions. These encouraging values make these materials useful for efficient practical applications in indoor and outdoor environments.

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“…The study in [142] studied the sound insulation properties of a facade system consisting of two layers of lightweight concrete. The inner of which is a structural element, and the outer one is heat-insulating.…”

Section: Lightweight Aggregate Concretementioning

confidence: 99%

Sound-Absorbing Acoustic Concretes: A Review

et al. 2021

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Noise is continuously treated as an annoyance to humans and indeed commotion contamination shows up within the environment, causing inconvenience. This is likewise interesting to the engineering tactic that inclines to develop this noise proliferation. The basics of the sound-retaining proliferation, sound-absorbing properties, and its variables were rarely considered by previous researchers. Thus, the acoustic performance and sound insulation of constructions have gained significance over the last five decades due to the trend for accommodating inner-city flat and multi-story residential building condominiums. Due to this dilemma, the proliferation of high-driven entertaining schemes has engaged extraordinary demands on building for its acoustic performance. Yet, construction industries worldwide have started to mainly use sound-absorbing concrete to reduce the frequency of sounds in opened-and-closed areas and increase sound insulation. As reported, the concrete acoustic properties generally rely on its density, exhibiting that the lighter ones, such as cellular concrete, will absorb more sound than high-density concretes. However, this paper has an objective to afford a wide-ranging review of sound-absorbing acoustic concretes, including the measurement techniques and insulation characteristics of building materials and the sound absorption properties of construction materials. It is also intended to extensively review to provide insights into the possible use of a typical sound-absorbing acoustic concrete in today’s building industry to enhance housing occupants’ efficiency, comfort, well-being, and safety.

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Characterization of the sound insulation properties of a two-layers lightweight concrete innovative façade

Cited by 28 publications

References 6 publications

Acoustic Properties of Innovative Concretes: A Review

Acoustic Properties of Innovative Concretes: A Review

More Than Just Concrete: Acoustically Efficient Porous Concrete with Different Aggregate Shape and Gradation

Sound-Absorbing Acoustic Concretes: A Review

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