Concrete wastes are generally delivered to the landfill sites for disposal. Due to increase charges of landfill and shortage of natural coarse aggregate (NA). recycled coarse aggregate (RA) (resulting from concrete wastes) is growing interest in Building Engineering. It is sustainable to use recycled construction materials to preserve the natural resources and maintain the environment... https://ozqntfrdimaw5q.timeblog.net/70688500/multivariate-urban-air-quality-assessment-of-indoor-and-outdoor-environments-at-chennai-metropolis-in-south-india