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This article studied a new asphalt pavement patch repair method that used dynamic infrared pre-heating. The thermophysical properties of the asphalt mixture were measured because they affect heat transfer and storage inside the pavement initiated by the absorbed radiation energy of radiative heat application on the surface of the pavement. One of these thermophysical properties, thermal conductivity, was measuring using the transient line source (TLS) method. From the TLS method, ...
This research looked to investigate the thermal conductivity and heating performance of asphalt mixtures containing steel slag and steel wool fibers (SWF). An instrument was used with the transient plane source method, to evaluate the effect of SWF and steel slag on the thermal conductivity of asphalt. Results showed that as the content of SWF increased to 6%, the asphalt mixtures had a higher thermal conductivity. At 8% SWF content, the uneven ...
Hydronic Pavement (HP) is a potential alternative method of spreading sand and salt on slippery road surfaces through embedded pipes that circulate brine, oils, or glycol-water. The present study analyzes the thermal properties involved in designing a HP system. The transient plane source method was used to analyze thermal properties of asphalt with various sensor sizes. Results showed that thermal conductivity varied around 6-14% based on the different depths of ...
Deicing and anti-icing performance of an innovative polyurethane pavement surface layer that replaces asphalt binder was studied. Thermal properties of polyurethane concrete and asphalt concrete were measured using a Thermal Constants Analyzer with transient plane source (TPS) method. Results found that polyurethane concrete had similar thermal conductivity to asphalt concrete, but a much greater specific heat. Polyurethane was also found to have a better anti-icing and deicing performance compared to ...
The goal of this paper was to incorporate Phase-Change Materials (PCMs) into asphalt in order to reduce the amount of heat that the pavement absorbs. Asphalt pavement is vastly preferred to cement for roads, however the downside is that it can reach extremely high temperatures during daylight hours, which can increase the heat island effect and cause deformation in the road surface. The thermal and mechanical properties of asphalt with ...
