The use of Warm Mix Asphalt (WMA) technology enables a substantial reduction in both the manufacturing and paving temperatures of the Hot Mix Asphalt (HMA). Certain Warm Mix Asphalt (WMA) technologies can drop the temperature to 100C or below, compared to the used 160C of HMA, while maintaining the required performance of the asphalt mixture. The mixing and laying temperatures are reduced by decreasing the bitumen's viscosity or enhancing the mixture's workability. This technology has many advantages compared to HMA, such as reducing greenhouse gas emissions, lowering energy usage, enhancing working conditions, improving workability, and compaction. This research offers a comprehensive examination of the advantages associated with using Warm Mix Asphalt (WMA), as well as the potential areas of specialization for its implementation.

Despite demonstrating the promising performance of WMA in contrast to HMA, this technique has not yet garnered widespread adoption within the asphalt industry. In order to achieve broad deployment, it is essential to provide empirical evidence demonstrating that WMA exhibits comparable or superior properties and long-term performance compared to HMA. This research examines the possible issue areas associated with various WMA technologies and presents the findings from the research conducted on their performance.

This study will start by examining the use of two nano materials at two different addition percentages, to find which of these materials at the selected addition percentage will produce the best performance grade (PG) of the modified asphalts. Then, four asphalt concrete mixes will be designed using the Superpave mix design procedure to find the optimal asphalt percentage addition. The four mixes will include a standard hot mix asphalt without any additive, an HMA using the optimal nano-asphalt binder, a mix using WMA additive, and a mix comprising the optimal nano-asphalt binder and WMA additive. Performance of the four mixes at the optimal asphalt content additions will be evaluated through Indirect Tensile Strength testing, Stripping test, Fatigue performance, and Permanent Deformation (Rutting) Testing. The research will be supported by an economic evaluation study to find the optimal mix at the lowest cost.

The study objectives are:

1. Improve the Performance Grade (PG) of the asphalt binder using two types of nanomaterials at two different percentages. Determine optimal material and optimal addition percentage.
2. To identify WMA additives encompassing the breadth of WMA technologies and evaluate their effects on unmodified asphalt binders.
3. To design a standard non-modified HMA mixture, nano-modified asphalt binder HMA mixture, HMA mixture with WMA additive, and a mixture that includes the nano-asphalt binder and WMA additive using Superpave mix design criteria.
4. Performance evaluation of the Superpave optimized mixes.

Conduct an economic evaluation study to find the optimal mix at the lowest cost.

1. More environmentally sustainable (reduced emissions, more energy efficiency).
2. Technically superior to Hot Mix Asphalt (HMA) regarding rutting, fatigue, and moisture resistance.
3. Economic (sustained savings for infrastructure allocations).
4. Socially advantageous (safer roadways, improved work conditions).