Monitoring Rail Bed Infrastructure Using Wireless Passive Sensing Project 1.20 Project Summary Assessment and monitoring the performance and health of rail structures is an essential aspect of prioritizing the repair and replacement, as well as extending service life, of these transportation infrastructures. Intrusion of fines from the subgrade or surface leads to ballast fouling and […]
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Development and Application of a Cost-Benefit Tool for Quantifying External Social Impacts of Small to Mid-Size Transportation Projects Project 4.13 Project Summary This two-year project will focus on developing methods for quantifying the external social costs of transportation civil infrastructure projects, particularly small to mid-size projects that are common in New England states. Transportation projects […]
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Base Projects Investigating the Effectiveness of Enzymatic Stabilizers for Reclaimed StabilizedBase Projects Project 3.13 Project Summary The overarching goal of this project is to evaluate the effectiveness of enzymatic stabilizers in RSB projects in Vermont and the New England (NE) region. The outcomes of this project will assist engineers in (i) determining the appropriate enzymatic […]
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Performance Structural Concrete Optimized for Cost, Durability and Manufacturability Project 2.13 Project Summary The primary goal is to develop prescriptive concrete mix designs that meet modern high- performance durability requirements while being practical to manufacture with New England-sourced materials and suppliers. These new Performance Concrete or High Performance Concrete (HPC) mix designs use graded aggregates, […]
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Evaluation of Processed Glass Aggregate for Utilization in Transportation Projects as A Sand Burrow. Project 2.12 Project Summary “Sand borrow” is a sand-like material most commonly used as a subbase under pavements. To provide good drainage and protect the pavement from frost heaves, the sand borrow material is required to have a low content of […]
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Advanced Sensing Technologies for Practical UAV-Based Condition Assessment Project C20.2020 Project Summary The problem we are trying to investigate is the synergistic application of unmanned aerial vehicles (UAVs) with active acoustic sensing (AAS) and synthetic aperture radar (SAR) for the underside inspection of bridge decks. The problem is important because that employing such UAV-AAS-SAR system […]
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A New Method of Determining Payment for In-Place Concrete with Double-Bounded Compressive Strength Pay Factors Project C9.2019 Project Summary The Vermont Agency of Transportation (VTrans) currently uses a lower acceptance limit on 28-day concrete compressive strength (CCS) of 4,000 psi for acceptance of in-place concrete in its construction projects. Over time, to mitigate risk, the […]
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Leveraging High-Resolution LiDAR and Stream Geomorphic Assessment Datasets to Expand Regional Hydraulic Geometry Curves for Vermont: A Blueprint for New England States Project C5.2018 Project Summary Regional hydraulic geometry curves (RHGCs) for Vermont have been updated through development of additional observations and use of newly-available high-resolution lidar and stream geomorphic assessment data to improve the […]
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High Performance Concrete with Post-Tensioning Shrinking Fibers Project 2.7 Project Summary This research improves upon the technique of reinforcing concrete with dispersed fibers by having the fibers axially shrink after curing to produce a dispersed multi-axial post-tensioned state. Such reinforcing may increase the crack resistance and durability of the concrete. Preliminary benchtop testing with natural […]
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Measuring Adhesion Between Binders and Aggregates Using Particle Probe Scanning Force Microscopy at Low Temperatures Project 2.3 Project Summary Low temperature cracking is one primary distress of pavement materials in New England area. It is estimated that only half of the major US roads are in good condition, whereas thirteen percent are in poor condition. […]
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