The overall goal of this project is to develop guidelines for a rapid mix design with small samples for lime-treated materials for TexDOT. To accomplish this goal the following objectives will be achieved: 1. Conduct a literature review and summarize state-of-the practice and key findings; 2. Review and summarize mix design methods currently in use for lime treated materials; 3. Conduct a comprehensive lab program comparing existing procedures with small sample methods; 4. Develop a lab mix design method for lime treatment that is similar in methodology, with accelerated methods of mix design currently in use or under development for asphalt-based and cement-based treatments; 5. Demonstrate the procedures for upcoming construction projects; 6. Develop recommended test procedures and updates to specifications. The scope of the proposed work consists of a comprehensive testing and analysis program for a set of carefully selected soils and base course, with a range of plasticity index and clay minerals, and the development of a mix design procedure that will result in a significant reduction in turnaround time and amount of materials required for mix design. The work will evaluate and compare physical, chemical and mechanical test properties of the samples designed according to the current method and the selected potential methods, to recommend the most optimum curing, moisture conditioning and testing methods. The conclusions and recommendations will be provided in the form of specification updates for effective implementation. The results of this study will allow TexDOT to design good performing, durable and long-lasting lime-treated layers, and allow them to harmonize the mix designs for different types of treatments.