详情

Develop Methodologies for Reducing Costs in Full Depth Reclamation (FDR) Construction

项目名称：	Develop Methodologies for Reducing Costs in Full Depth Reclamation (FDR) Construction
摘要：	Full depth reclamation (FDR) using emulsified asphalt or foamed asphalt continues to grow in usage throughout Texas. To date, almost all mixtures use a cement additive in the mix design. The cement additive reportedly contributes to early strength gain which can be particularly important for projects that require daily opening to heavy traffic. However, not all construction projects require daily opening to traffic, and some materials may provide adequate performance without the cement additive. Additionally, with potential cement supply shortages, design and construction of FDR layers using only the asphalt treatments could save materials cost, reduce schedule risk, and increase daily productivity since one less step would be required in the treatment process. The research team will analyze the performance of asphalt-based FDR materials with and without the cement additive and evaluate the strength and stiffness properties of those mixes in the early, intermediate, and final curing stages. The research team will leverage those results to determine the operational benefits and acceptability of placing traffic on the section for traffic control and construction staging, evaluate how the long-term performance of the layer may be impacted for pavement design, and make recommendations for mix design and construction specification updates.
状态：	Active
资金：	679484
资助组织：	Texas Department of Transportation
管理组织：	Texas Department of Transportation
项目负责人：	Steele, Joanne
执行机构：	Texas A&M Transportation Institute
主要研究人员：	Sebesta, Stephen
开始时间：	20220901
预计完成日期：	20251130
主题领域：	Construction；Highways；Maintenance and Preservation；Materials；Pavements