Sharif Digital Repository

Although there are several popular and standardized mix design methods for hot-mix asphalt, there is no universally accepted mix design method for cold in-place recycling (CIR). The varieties of recycling machinery, materials, quality control limitations, etc. have contributed to this problem. Most of CIR laboratory mix designs are based on 4-inch molds and maximum aggregate size of 1inch. The use of single unit train, which is the most common machinery used for CIR, results in poor control of aggregate gradation, especially when distresses such as fatigue cracking exist. This may lead to presence of aggregate sizes larger than 1 inch. In this case the use of 4-in mold is no longer... 

Recent advancements have led to the widespread adoption of cold asphalt mixtures, primarily due to their numerous benefits, including reduced fuel consumption and lower emissions of harmful gases such as CO2. These mixtures are utilized for various applications, notably in road repair and maintenance. The duration required for cold asphalt layers to attain the requisite mechanical strength is termed the curing time. Various transportation agencies and authorities employ different methodologies to ascertain this curing period. Some agencies determine it based on the minimum moisture content of the mixture, often cited as 1.5% in several studies. Others prescribe a curing duration ranging from...