"Exploring Aerated Autoclaved Concrete (AAC) Acoustic Properties Across Diverse Frequency Bands"

Abstract

Aerated Autoclaved Concrete (AAC) stands out as an environmentally friendly and lightweight construction material. Known for its durability, load-bearing capacity, and excellent insulation, AAC surpasses traditional concrete blocks and red bricks in construction preferences. Its suitability as a wood alternative is evident, given its resistance to decay and comparable lightweight characteristics. Comprising a blend of cement, fly ash, limestone, and gypsum in an 8:69:20:3 ratio, with aluminum powder as the expansion agent, AAC serves as a versatile building material. In addition to its various attributes, understanding the acoustic properties of AAC is essential. Structures such as schools, hospitals, hotels, offices, and multi-family housing demand effective sound insulation, necessitating the use of materials with favorable sound absorption coefficients and minimal sound reflection coefficients. Due to its porous composition, Aerated Autoclaved Concrete exhibits notable sound absorption coefficients, making it ideal for applications in environments like schools and hospitals. This research delves into the determination of AAC's sound absorption coefficient and sound reflection coefficient across a spectrum of frequencies ranging from 1 kHz to 10 kHz. The analysis extends beyond frequency variations to encompass different sound intensities, offering a comprehensive exploration of AAC's acoustic characteristics.