**2.3.6 Asphalt products**

The new asphalt concrete sample was black, and for this reason had very high mean maximum temperature of 61.8 oC, Tair+27.3 oC and mean temperature of 46.7 oC, Tair+15.5 oC, While the weathered asphalt sample was significantly cooler, having a mean maximum temperature of 50.6 oC (Tair+16.1 oC) and a mean temperature of 40.3 oC (Tair+9 oC). The differences between the new and the weathered samples were larger than 10 oC, for the mean maximum, and around 7 oC, for the mean surface temperatures.

Asphalt water-proofing membranes recorded the highest surface temperatures among all the samples. All the samples apart from the one with the polished aluminium facing (mean maximum temperature equal to 46.8 oC, Tair+12.3 oC) recorded temperature exceeding the mean maximum surface temperature of 65.5 oC (Tair+31 oC). It should be noted, though, that the samples were placed on an extruded polystyrene slab, which differs from their actual placing practice on a concrete substrate. As a result, the temperatures that were measured may be higher than those, which would have been measured if the materials were placed on a more conductive substrate.
