Project 1.1 Abstract: Concrete T-beam bridges are an important class of structures that has seen limited investigation. These structures are often perceived as quite robust and are in good condition, but possess very low rating factors based on conventional analysis per the AASHTO Manual for Bridge Evaluation. Testing of five Read more…
Project Abstract: The objectives of this project are to synthesize novel sensors integrated with physics-informed data analytics to monitor the railway track for enhanced reliability and durability. New active sensing mechanisms will be developed, to enable autonomous detection and identification. New physics-informed statistical inference algorithms will be formulated, to realize Read more…
Project Abstract: To ensure long lasting performance of pavement materials and avoid significant maintenance and rehabilitation costs, it is necessary to achieve high quality and uniformly compacted materials. In this project, we aim to improve the IC performance and facilitate the process of geomaterial compaction and pavement performance monitoring by Read more…
Project Abstract: The main goal of this project is the development of non-proprietary concrete mixtures with high and ultra-high mechanical and durability performance. In collaboration with ConnDOT and concrete material suppliers from the New England area, mix design solutions will be sought tailored towards workability, mechanical and durability performance as Read more…
Project Summary: This project focuses on the extension of novel, fiber-reinforced polymer composite tub girder (CT girder) sections to incorporate precast concrete deck panels. This will extend the application of this new bridge technology by modularizing construction, optimizing the use of relatively costly composite materials, and reducing required superstructure depth. Read more…
Project 3.14 Summary: UMaine recently developed and commercialized, in partnership with AIT Bridges, a novel, fiber-reinforced polymer (FRP) composite bridge girder. This project will assess the shear strength of foam-core webs of the girders using a combined experimental and analytical approach. Data from this and other previous and ongoing research Read more…
Project 3.20 Summary: Maine Department of Transportation (MaineDOT) has been experiencing increasing costs in bids received for bridge repair, road paving and other infrastructure construction projects. This was first observed for bridges in the Fall of 2018 and paving in the spring 2019. Moreover, for projects with single bidders, the Read more…
Project Abstract: Based on successful testing and supporting research conducted by UMaine on a new, hybrid FRP-concrete girder, a demonstration bridge using this technology in Hampden, Maine will be constructed in the 2020. This bridge has been designed in partnership with Advanced Infrastructure Technologies of Orono, Maine. Our prior experience Read more…
Project Summary: The proposed study supports a project sponsored by MaineDOT, titled “Road Salt Impact Assessment.” Winter weather and maintenance treatments have significant impact on highway safety and operations. Understanding the safety impact of these factors directly influence decisions on diminishing maintenance funds, and cost-benefit analysis of alternative maintenance strategies. Read more…
Project Abstract: The objective of this study is to future-proof transportation infrastructure (e.g., highways, railways, and bridges) through proactive, intelligent, and public-involved planning and management so that they can prepare appropriately, minimize impact, and capitalize opportunities in the face of future events, changes, and needs. Examples of future events, changes, Read more…
Project Abstract: This research project aims to design a systematic and quantitative framework to explore the connectivity and security issues in representative transportation infrastructures, including low-power wireless network infrastructure mainly for long-term structural monitoring, and vehicle-to-everything (V2X) communication infrastructure for vehicle-to-vehicle and vehicle-to-infrastructure message passing. Principal Investigator: Dr. Song Han Read more…
Project Abstract: Bridge rehabilitation or new bridge design is often performed as needed for individual bridges without much consideration for how the change affects other bridges, properties, roads, etc. This is often a concern raised by stakeholders when they hear about planned changes in their river corridor. This project will Read more…
Project 4.9 Summary: The proposed study accomplishes a task for a project sponsored by Maine DOT, titled “Analysis of Covid-19 and travel in Maine (ACTIME).” The federal census, traffic count stations and regional phone-based travel surveys have been the traditional sources of data used to study and quantify traffic volumes Read more…
Project Abstract: Regional hydraulic geometry curves for Vermont and surrounding portions of New England states will be updated through consideration of additional observations, and through application of advanced statistical techniques (e.g., clustering, multiple linear regression, Bayesian inference) that leverage newly-available high-resolution LiDAR and stream geomorphic assessment data. This will result Read more…
Project C9.2019 Abstract: 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 concrete industry’s response has led to increasingly higher average 28-day CCS, Read more…