State-of-the-Practice for Cold-Weather Compaction of Hot-Mix Asphalt Pavements

摘要

Proper density in the HMA pavement is the single most important determinant of the performance of the pavement. The three most important issues for achieving density are temperature, temperature, and temperature. In many instances, owners request or demand that mix be placed in cold-weather conditions. While placement of HMA can be successfully accomplished in cold-weather conditions, mere are risks involved. The owner and contractor need to understand the risks involved and understand that the risk may not be justified. In some cases, cold-weather paving simply may not be the right decision. In other situations, the owner may understand the risk and choose to pave for safety or business reasons, fully understanding mat the performance life of the pavement may be compromised. Placing HMA in cold-weather conditions is inevitable. Project planning and heightened attention to detail during the construction operation are vital in cold-weather operations. The owner and contractor must work together to ensure good quality materials and placement are achieved.