Develop Guidelines and Design Program for Hot-Mix Asphalts Containing RAP, RAS, and Other Additives through a Balanced Mix-Design Process
| 项目名称： | Develop Guidelines and Design Program for Hot-Mix Asphalts Containing RAP, RAS, and Other Additives through a Balanced Mix-Design Process |
| 摘要： | University of Texas at El Paso (UTEP) will provide TxDOT with an Asphalt Concrete (AC) mix design program and guidelines to determine the optimum recycled asphalt pavement (RAP), recycled asphalt shingles (RAS), and additives content for designing balanced mixes without compromising the quality and performance of the final product. During this project, the university will: 1. Evaluate current mix designs, design processes and guidelines for use of RAP, RAS, and additives on AC mixes in Texas and worldwide to identify weaknesses and strengths of current practices for balanced mix designs involving RAP, RAS, and other additives. 2. Gather laboratory and field performance of sections studied under Research Project 0-6679. These sections are identified as historical and in-service sections (sections to be determined by Texas Department of Transportation (TxDOT)) constructed with and without RAP, RAS, and additives. 3. Determine correlation of laboratory results to pavement sections studied under Research Project 0-6679 (chosen by TxDOT) using performance indicators from tests such as the overlay tester (OT) and Hamburg wheel tracking device (HWTD) and strength parameters like the Indirect Tensile strength from past research projects to implement a protocol for a balanced cracking and rutting resistant mix containing RAP, RAS, and other additives. 4. Evaluate at least 15mixes used by TxDOT through a factorial experiment to assess the influence of RAP, RAS, and additives on the performance of balanced Hot Mix Asphalt (HMA) mixes. 5. Evaluate the feasibility of an AC mix design process that not only consider the raw and recycled materials but also incorporates the structural design of the pavement section to reliably characterize the performance of the designed AC mix. 6. Develop a design program for TxDOT pavement designers and engineers to determine the optimum RAP, RAS, and additive contents on AC mixes with varying aggregate type, asphalt content and grade and (if feasible) structural design of the pavement. |
| 状态： | Completed |
| 资金： | 523750 |
| 资助组织： | Texas Department of Transportation |
| 项目负责人： | Jensen, Darrin |
| 执行机构： | University of Texas, El Paso |
| 主要研究人员： | Nazarian, Soheil |
| 开始时间： | 20160621 |
| 预计完成日期： | 20190831 |
| 实际结束时间： | 20200831 |
相关文献
- Recommended Procedures for Verifying Material Quantities at Asphalt Mix Plants
- Evaluating Recycling Agents’ Acceptance for Virginia: Test Protocols and Performance-Based Threshold Criteria
- Testing and Evaluation of RAP and RAS on Experimental Pavement Sections
- Implementation of Balanced Mix Design of Asphalt Mixtures Prepared with Reclaimed Asphalt Pavements and Rejuvenators for Enhanced Performance
- The Effects of Recycling Agents on Asphalt Mixtures with High RAS and RAP Binder Ratios
- Recycled Asphalt Materials: Binder Availability and Its Impact on Mix Performance
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