Acoustic Performance of Recycled Glass Aggregate-Based Porous Concrete and Its Applicability through Café Space Simulation
Year: 2026
Type: article
Abstract: This study evaluated the feasibility of porous concrete using waste glass aggregates as an acoustic building material.Mechanical properties and sound absorption performance were examined, and room acoustic simulations were conducted using Odeon software.The results showed that the GB (Glass Bead) specimen exhibited the highest sound absorption performance, reaching a peak absorption coefficient of 0.71 at 1,000 Hz and a weighted sound absorption coefficient (aw) of 0.40, although it possessed very low mechanical strength.In contrast, LGS (Large Glass Sand) and SGS (Small Glass Sand) demonstrated balanced performance, with maximum absorption coefficients of 0.74 and 0.76 at 2,000 Hz, respectively, and aw values of 0.35 and 0.40.Simulation results indicated that replacing conventional concrete finishes with porous concrete reduced the Early Decay Time (EDT) by up to 33% and the reverberation time (T 20 ), indicating an overall improvement in reverberation characteristics.In addition, D50 increased from 0.37 to 0.55, and C 80 improved from 0.4 dB to 4.0 dB, suggesting enhanced acoustic clarity.Overall, while GB showed superior acoustic performance, its structural limitations restrict practical application.LGS and SGS are considered more suitable for non-structural acoustic finishing materials.
Source: 한국생활환경학회지
Institution: Chungnam National University
Language: English
Subfield: Building and Construction
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7160435669