A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
More than just concrete: Acoustically efficient porous concrete with different aggregate shape and gradation
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 (aw) 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.
More than just concrete: Acoustically efficient porous concrete with different aggregate shape and gradation
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 (aw) 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.
More than just concrete: Acoustically efficient porous concrete with different aggregate shape and gradation
Louena Shtrepi (author) / Arianna Astolfi (author) / Elena Badino (author) / Giovanni Volpatti (author) / Davide Zampini (author) / Shtrepi, Louena / Astolfi, Arianna / Badino, Elena / Volpatti, Giovanni / Zampini, Davide
2021-01-01
Article (Journal)
Electronic Resource
English
DDC:
690
There is more to recycled concrete aggregate than just aggregate
| British Library Conference Proceedings | 2007
Pervious Concrete: Compaction and Aggregate Gradation
| Online Contents | 2009
Pervious Concrete: Compaction and Aggregate Gradation
| British Library Online Contents | 2009
Mechanical properties of porous concrete with variations of coarse aggregate gradation
| DOAJ | 2019