Cost Estimate of B vs. C Grade Asphalt Binders
| 项目名称： | Cost Estimate of B vs. C Grade Asphalt Binders |
| 摘要： | Polymer modified binders (PMB) have been shown over the decades to have superior rheological and mechanical properties compared to unmodified asphalts. However, the higher costs of PMBs has prevented a wider use of these materials. While for high traffic roads, the choice of superior products is more obvious, for lower volume roads, there isn’t always enough information to allow engineers to determine if using a PMB is cost-effective in the long run. For example, for a job of 50,000 t, a difference of $12 per ton results in an additional cost of $600k, which is very significant for local roads authorities. In Minnesota, the necessity of understanding the benefits of using polymer modification, which provides superior resistance to cracking, is even greater, since asphalt pavements largely fail due to low-temperature cracking. Many local agencies use polymer modified binders, mainly PG 58H-34 (Grade C), in the asphalt mixtures for the wearing course, which reduce the occurrence of transverse cracking. However, the answer to the question “how cost-effective is the use of the Grade C binder, especially when compared to the cheaper PG58S-28 (Grade B) binder”, is not known. The main goal of the proposed research is to provide a well-informed answer to the above question. This will be accomplished by documenting and analyzing existing performance data, reviewing relevant case studies, perform experimental work on various asphalt binders and mixtures to evaluate their low temperature cracking resistance, and conduct a benefit-cost analysis to provide recommendations on when to use Grade B and Grade C for lower volume roads. |
| 状态： | Active |
| 资金： | 171,777.00 |
| 资助组织： | Local Road Research Board |
| 开始时间： | 20210604 |
| 预计完成日期： | 20230630 |
| 主题领域： | Materials；Pavements |
相关文献
- Hot Mix Asphalt Research Investigation for Connecticut
- Advanced Testing and Characterization of Iowa Soils and Geomaterials
- Exploring the Autonomous Truck Mounted Attenuator (ATMA) Technology Potential for Kansas
- Use of Nanoclays as Alternatives of Polymers Toward Improving Performance of Asphalt Binders
- DSR-based Test Procedures and Specification Guidelines for Grading PG58-XX and PG64S-XX Asphalt Binders in the State of Kansas
- Use of X-Ray Fluorescence (XRF) to Determine Tire Rubber Content in Asphalt Binders
检索历史
应用推荐
