Changing patterns of thermal behavior of concrete pavements in diurnal periods
Y. Mao (TU Delft - Civil Engineering & Geosciences)
M. M. Rutten – Mentor (TU Delft - Water Resources)
E. Stache – Graduation committee member (TU Delft - Materials and Environment)
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Abstract
Concrete is affected by a variety of environmental factors, and its temperature varies with time and other meteorological factors. The subsequent construction of the Heat Square is supported by an analysis of concrete temperature changes and their environmental influences. This article evaluates the variation of concrete block temperature by two months of field measurements at the Heat Square and meteorological data from The Green Village. The temperature of the concrete bricks changed asymmetrically, with the cooling time being much longer than the warming time. The maximum temperature occurred in the early morning after sunset, with a 3-hour time delay between changes in concrete temperature. By using partial correlation analysis, the most significant influence of meteorological factors on the surface temperature was the air temperature and the least influence of changes in relative humidity on the surface temperature. The article's analysis offers two suggestions for the Heat Square's construction: (1) Include measurements of near-surface wind speed. (2) Combine temperature measurements taken at various depths. (3) Subsequent research can explore the cooling effect by analyzing the shading effect of plants.