The effect of temperature on reflection cracks in composite pavements

• Main Authors: Raheem, Hiba M., Abduljabbar, Ahmed Subhi
• Format: Conference Proceeding
• Language: English
• Subjects: Asphalt; Cracks; Geotechnical fabrics; Interlayers; Pavement overlays; Pavements; Temperature effects; Transformers
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0212580

Reverse cracking is a common problem in hot mix asphalt (HMA) overlays. In this work, models of concrete and asphalt were evaluated to see what effect interlayers added by applying vertical stresses (representing road traffic) under the influence of heat. The LVDT (linear variable differential transformer) electro-transformer was also utilized to determine the model’s deviation. The results were satisfactory since the reflecting cracks began to form late through the employment of three separate layers, namely the geological network, geotextiles, and steel mesh, and the behavior of these layers was changed by the heat. This method was sensitive to several factors including the type of mixture, fall loads, and temperature selection, with the results showing that the steel mesh outperformed other options. The heating temperature was chosen to simulate the summer effect on the pavement by increasing the crack reflection speed in comparison to a moderate or medium temperature. It is superior to the other two interlayer types, with a percentage increase (i.e. performance improvement) of 37.5% when using geotextiles, compared to a percentage increase of 20.9% when using geogrid, and the lowest reflective crack resistance, when using geotextiles. Using the geographic network, 16.7% of the population was impacted.