Alternative Structural Systems Archives - Transportation Infrastructure Durability Center

Alternative Structural Systems

sensor placement under grist mill bridge

Project 3.17: Assessment of CT Girder Load Distribution and Web Buckling Through Field Load Testing and Finite-Element Analysis

Assessment of CT Girder Load Distribution and Web Buckling Through Field Load Testing and Finite-Element Analysis Project 3.17: Field Live Load Testing and Advanced Analysis of Concrete T-Beam Bridges to Extend Service Life Project Summary Recent and ongoing research has highlighted the need to better understand and quantify web shear capacity as well as the […]

Project 3.21: GBeam Bridge Girder Pultrusion: Section Design and Optimization

GBeam Bridge Girder Pultrusion: Section Design and Optimization Project 3.21 Project Summary The GBeam girder system, recently developed by the University of Maine (Dagher et al. 2019; Davids et al. 2022a; Davids et al. 2022b), holds significant promise for widespread application in conventional, slab-on-girder bridges. Its successful initial implementation is driven by enhanced durability, low […]

3.18 cover image of a diagram showing test method of concrete deck

Project 3.18: Steel-Free Concrete Bridge Decks

Steel-Free Concrete Bridge Decks Project 3.18: Project Summary In order to realize a potentially transformational improvement in concrete bridge deck durability, the proposed research program intends to validate a deck design by which little to no conventional reinforcement is required. The design relies on the development of so-called arching action to maintain compressive stresses in […]

Project 2.18: Recycling Large-Scale 3 D-Printed Polymer Composite Precast Concrete Forms

Recycling Large-Scale 3 D-Printed Polymer Composite Precast Concrete Forms Project 2.18 Project Summary Large-scale thermoplastic composite extrusion-based 3D printing has been used in research labs and is moving into industry. One significant use of large-scale 3D printing has been to make forms for manufacturing precast concrete parts. Once the forms have been used for casting […]

Project 2.17: Design and Development of High-Performance Composites for Improved Durability of Bridges in Rhode Island

Design and Development of High-Performance Compositesfor Improved Durability of Bridges in Rhode Island Project 2.17 Project Summary Transportation infrastructure is the backbone of our economy. But the current condition of America’s deteriorating transportation infrastructure network has raised serious concerns on safety, quality of life, and economic impacts. According to the recent American Society of Civil […]

Project 2.16 Cover Image, three graphs and a model of a bridge part

Project 2.16: Enhancing the Durability of Bridge Decks by Incorporating Microencapsulated Phase Change Materials (PCMs) in Concrete

Enhancing the Durability of Bridge Decks by Incorporating Microencapsulated Phase Change Materials (PCMs) in Concrete Project 2.16 Project Summary In Rhode Island and other New England states, combined effects of freeze-thaw-induced damage and chloride ingress (from deicing salts) make it very challenging to maintain the quality of concrete on bridges and road surfaces. This project […]

Project 3.16: CT bridge girder sections with precast decks and FRP girder-deck shear

CT Bridge Girder Sections with Precast Decks and FRP Girder-Deck ShearConnectors Project 3.16 Project Summary UMaine recently developed and commercialized, in partnership with AIT Bridges, a novel, fiber‐reinforced polymer (FRP) composite bridge girder. This project focuses on the assessment of the fiber‐reinforced polymer tub girder (CT girder) with precast concrete decks and new, FRP girder‐deck […]

Project 2.15: Incorporation of Pollinator Plantings to Enhance Ecosystem Functions and Durability of Transportation Right-of-Way Infrastructure

Incorporation of Pollinator Plantings to Enhance Ecosystem Functions and Durability of Transportation Right-of-Way Infrastructure Project 2.15 Project Summary Highway right-of-ways (ROWs) provide numerous ecosystem services beyond erosion control. Incorporation of native grasses and flowering plants into ROW plantings can further increase the services by providing habitat for endangered native pollinators while improving aesthetics, erosion control, […]

Project 2.14: Implementation of UHPC Technology into the New England Construction Industry

Implementation of UHPC Technology into the New England Construction Industry Project 2.14 Project Summary The proposed research aims at the development and implementation of cost effective non-proprietary high and ultrahigh performance concrete (UHPC) mix designs. Research emphasis is being placed on testing and analysis of durability properties of promising UHPC mixtures, as well as testing […]

Project 3.15: Nonstructural approaches to reduce sediment and pollutant runoff from transportation

Nonstructural Approaches to Reduce Sediment and Pollutant Runoff from Transportation Infrastructure in Urbanized Areas Project 3.15 Project Summary Stormwater management is a critical component of transportation infrastructure and reduces sediments and pollutants delivered to waterways. The primary goal of this proposed study is to assess the performance and cost-benefit of including enhanced street cleaning program […]

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