Akademik Veri Yönetim Sistemi
Sustainable Energy Technologies and Assessments, cilt.62, 2024 (SCI-Expanded)
Phase Change Materials are used to provide a more stable micro-climate around the applied materials or surfaces. Using PCMs for snow melting applications is a very innovative and technical solution. These solutions are especially valuable in situations where flight delays can cause high costs when airport runways are covered with snow. In these applications, hot air is accumulated in PCMs and extracted during cold times. For this purpose, PCMs are incorporated into the pavements in different ways. One of the effective ways is to incorporate PCMs into lightweight aggregates. Perlite is a widely used lightweight aggregate that is also used with PCMs in building applications for insulation purposes. In this study, the performances of 3 different PCMs that were suitable for low temperature applications were investigated. These PCMs were incorporated into the raw and expanded perlite then a totally of 12 cement based composite mixtures including the reference mixture were produced. Thermal performances of the samples were monitored by both thermocouple measurements and thermal camera images. In addition to the thermal performances, the physical and mechanical performances of the composites were determined by the standard test methods. Results revealed that although using lightweight aggregates made an adverse effect on the mechanical values (these reductions, which were up to 87% when expanded perlite was used, were limited to 5.2% when raw perlite was used), they exhibited great potential for snow melting applications by keeping the surface warmer through more time.