Abstract
Introduction: The utilization of colored roller compacted concrete (RCC) for pavements in order to mitigate the urban heat island effect is a popular approach: increasing solar reflectance can reduce the effect. The paper explores the possibility of applying the reverse mechanism for regions with cold climates. The purpose of the study was to evaluate the mechanical, durability and solar reflectance properties of roller compacted concrete with coal powder (CP) and basalt fiber (BF) additives for pavement. Methods: an UV-Vis-NIR spectrophotometer was utilized for the albedo measurements. Consistency of the specimens was determined with Vebe consistometer. Compressive, flexural, and splitting tensile strengths were recorded at 7, 28 and 90 days. Frost resistance of the specimens was also investigated. Result: The combined utilization of 5% CP and 0.5% BF showed great performance for the roller compacted concrete pavements. Furthermore, the obtained albedo values also have the potential to increase the ambient temperature in cold climates.
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