Effect of Porosity and Compaction Method on Noise and Light Reflectance of Pervious Concrete

• Published in: Journal of the Eastern Asia Society for Transportation Studies Vol. 15; pp. 2494 - 2509
• Main Authors: GHOSH, Shuddhashil, BATHAM, Vishwas, SINGH, Priyansh
• Format: Journal Article
• Language: English
• Published: Eastern Asia Society for Transportation Studies 2024
• Subjects: Image Processing; Light Reflectance; Pavement Noise Interaction; Pervious Concrete; Sound Absorption Capacity
• ISSN: 1881-1124
• DOI: 10.11175/easts.15.2494

Pervious Concrete (PC) has an open-graded framework, as it contains no or minimal fine aggregate and can help to reduce night-time glare and vehicular noise. This study investigated PC samples with varying densities and compaction techniques for sound absorption and reflectance. The samples were tested for sound reflectance using an acoustic enclosure to analyse the reflected audio signals and were then photographed to be analysed using Python. The findings revealed a positive relationship between density and sound reflectance, indicating that higher-density PC exhibited increased reflectivity. Light reflectivity analysis demonstrated that density and the compaction method during casting influenced the reflectance characteristics. Also, increased surface porosity led to a reduction in glare and pavement noise. Understanding the relationship between PC density, porosity, and acoustic and reflective properties is essential for optimizing PC design and application. This knowledge can be used to design PC pavements that effectively reduce noise and glare.