详情

Low-Cost Rural Surface Alternatives Phase III: Demonstration Project TR-721

项目名称：	Low-Cost Rural Surface Alternatives Phase III: Demonstration Project TR-721
摘要：	The objectives of the proposed Phase III project are to construct and monitor several more test sections around Iowa using additional stabilization methods employing different types of virgin and recycled materials. The economic and initial versus life-cycle maintenance costs for the different methods will be studied as was done in the Phase II project (TR-664). It is proposed that four to five additional demonstration sections be constructed in Hamilton County, including one control section. Similar demonstration sections will then be built in three additional counties distributed around Iowa (a total of 16 to 20 test sections over four counties), to cover a range of different aggregate sources, subgrade soil types, and weather conditions. All demonstration sections will then be tested and monitored through two winter freeze-thaw cycles, and the construction and maintenance costs will be tracked and analyzed as was done in the Phase II project. The most effective and economical stabilization methods will be identified, and a "How-To" guide will be written for county and district engineers to implement the stabilization methods. Additionally, tests will be performed at several existing macadam-based granular roadways around Iowa, to try to identify the surface-course material properties and subgrade conditions that lead to good long-term performance of non-bitumen macadam bases under granular-surfaced roads.
状态：	Active
资金：	151428
资助组织：	Iowa Department of Transportation
管理组织：	Iowa State University, Ames
项目负责人：	Waid, Danny R
执行机构：	Iowa State University, Ames
主要研究人员：	Cetin, Bora
开始时间：	20170401
预计完成日期：	20201231
实际结束时间：	0