A number of warm-mix asphalt (WMA) technologies are used to reduce the temperature at which the asphalt mixtures are produced and compacted, apparently without compromising the performance of the pavement. The main objective of this study is to determine whether the use of an innovative wax-based LEADCAP WMA additive influences the performance of the asphalt mixture, which is produced and compacted at significantly low temperatures. The WMA pavement using LEADCAP additive (WMA-LEADCAP) along with a control HMA pavement was evaluated with respect to their performances of rutting resistance, crack resistance, and viscoelastic property based on the laboratory dynamic modulus test, indirect tensile strength test, and in-door accelerated pavement test (APT) results. With the limited data carried out, the LEADCAP additive is effective in producing and paving asphalt mixture at approximately 30°C lower temperature than a control HMA mixture, and the performances of WMA-LEADCAP pavement are comparable to a control HMA pavement. 1. Introduction Hot-mix asphalt (HMA) is produced at temperatures between 140°C and 160°C and even higher mixing temperatures can be required to produce some mixtures, namely, asphalt rubber and polymer-modified asphalt (PMA) mixtures. These temperatures ensure that the aggregate is dry, the asphalt coats the aggregate, and the mixture has a suitable workability. Several temperature reduction technologies, called warm-mix asphalt (WMA), have been recently developed in the asphalt paving industry. The initial concept of WMA technologies was introduced in European to reduce greenhouse gas emission due to warn of global warming. Each country within Europe Union was confronted with greenhouse gas reduction targets as a result of the 1997 Kyoto treaty on climate change [1]. The use of WMA technology has become a mainstream of the asphalt pavement construction in the United States and the world due to the reduced fuel consumption, less carbon dioxide emission, reduced oxidation of asphalt, early opening to traffic, and a better working environment for workers. Most WMA technologies work by lowering the viscosity of the asphalt which allows to better coat aggregate surfaces and reduces the target temperatures to reach adequate workability of the mixture. The WMA technology has become popular in recent years because of the environmental and economic benefits in the world [2]. A number of WMA processes have been developed in Europe and the United States since the late 1997. There were approximately 20 WMA technologies being marketed in the United
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