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Development of Structural Carbon Nanotube-Based Sensing Composites for Rehabilitation of Deteriorating and Fatigue-Damaged Steel Bridges

Project Information

Project ID: 
FHWA-PROJ-13-0046
Project Status: 
Active
Start Date: 
Monday, September 30, 2013
End Date: 
Monday, September 9, 2019
FHWA Program: 
Exploratory Advanced Research
FHWA Subprogram: 
Long-Term Infrastructure Performance
FHWA Activity: 
Long-Term Bridge Performance
FHWA Topics: 
Research/Technologies--Turner-Fairbank Highway Research Center (TFHRC)
TRT Terms: 
Structural Health Monitoring; Infrastructure; Structures; Research; Bridges; Corrosion
FHWA Discipline: 
Structures
TRB Subject Area: 
Bridges and other structures

Contact Information

First Name: 
Frank
Last Name: 
Jalinoos
Telephone: 
(202) 493-3082
Email Address: 
Team: 
Long-Term Infrastructure Performance Team
Office:
Office of Infrastructure Research and Development
Office Code: 
HRDI-30

Project Details

Project Description: 

Structural Health Monitoring has become a viable solution to continuously monitor critical infrastructure components that show distress or are unable to pass current load rating procedures. This research focuses on the development of a structural sensing composite layer for concrete structures that is capable of providing distributed monitoring capability. The layer consists of carbon nanotubes that are deposited on a carrier, which form a continuous conductive skin that is extremely sensitive to changes in strain and the formation and propagation of microdamage and macrodamage. It can be either loadbearing, i.e., the layer represents the reinforcement as well as the sensor, or nonloadbearing, i.e., the layer acts as a sensing skin alone. Distributed sensing allows for increased detectability of forming or growing defects that cannot necessarily be captured with conventional point-type sensors, such as strain gauges or accelerometers.

Goals:

Develop a structural sensing composite layer for concrete structures that is capable of providing distributed monitoring capability.

Deliverables

Deliverable Name: 
Structural Carbon Nanotube-Based Sensing Composites for Rehabilitation of Deteriorating and Fatigue-Damaged Steel Bridges
Deliverable Type: 
Research report or guidelines
Deliverable Description: 
Structural Carbon Nanotube-Based Sensing Composites for Rehabilitation of Deteriorating and Fatigue-Damaged Steel Bridges