Develop Methodologies for Reducing Costs in Full Depth Reclamation (FDR) Construction
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.
Language
- English
Project
- Status: Active
- Funding: $679484
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Contract Numbers:
0-7143
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Sponsor Organizations:
Texas Department of Transportation
125 E. 11th Street
Austin, TX United States 78701-2483 -
Managing Organizations:
Texas Department of Transportation
125 E. 11th Street
Austin, TX United States 78701-2483 -
Project Managers:
Jensen, Darrin
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Performing Organizations:
Texas A&M Transportation Institute
Texas A&M University System
3135 TAMU
College Station, TX United States 77843-3135 -
Principal Investigators:
Sebesta, Stephen
- Start Date: 20220901
- Expected Completion Date: 20251130
- Actual Completion Date: 0
Subject/Index Terms
- TRT Terms: Asphalt based materials; Cement additives; Full-depth reclamation; Mix design; Recommendations; Stiffness; Strength of materials
- Subject Areas: Construction; Highways; Maintenance and Preservation; Materials; Pavements;
Filing Info
- Accession Number: 01863339
- Record Type: Research project
- Source Agency: Texas Department of Transportation
- Contract Numbers: 0-7143
- Files: RIP, STATEDOT
- Created Date: Nov 3 2022 3:06PM