A comprehensive review of warm mix asphalt mixtures-laboratory to field

Abstract

Warm mix asphalt (WMA) from different warm mix technologies (WMT's) can be prepared and compacted at reduced temperatures in comparison to hot mix asphalt (HMA). WMT's offers unique environmental and economic benefits by reducing the energy consumption, fuel cost, and hauling distance. Numerous laboratory and field investigations have been done to assess the mechanical performance of WMA. The main objective of this state of the art review is to assimilate information on various aspects of WMA mixtures. Data on available WMT's, mix design of WMA, workability requirements, and performance obtained in the laboratory and field are extensively reviewed and summarized. Effect of various WMT's on the mechanical performance of asphalt mixtures prepared using polymer modified binder, crumb rubber modified binder, and reclaimed asphalt pavement material is also presented. Additionally, previous works on life cycle cost assessment, greenhouse gas emissions, and economic benefits related to various WMT's are surveyed. © 2020 Elsevier Ltd