Faculty Directory

https://www.atiner.gr/civil-unit

• Condition assessment of infrastructure and materials through non-destructive testing, NDT;
• Non-destructive-based QA/QC systems
• Quality assurance risk assessment, performance specifications, and pay factors
• Recycled materials and Infrastructure Sustainability
• Highway materials performance assessment
• Machine Learning in Performance Predictions of Bridge Decks & Highway Materials

 

 

Whiting-Turner Infrastructure Engineering Laboratories

Materials, Pavements & NDT Labs

Testing Systems                                                                                                                    

• MTS servohydraulic closed loop 300 kip*                                                                
• Instron  servohydraulic closed loop  100 kip*                                                    
• UPM  servohydraulic closed loop with Env Chamber 100 kip*                                                                           
• ELE Compression 120 kip                                                                                          
• Humbolt Compression 180 kip                                                                                  
• Non Destructive Testing (10): resonance frequency RTG, impact echo IE, array pulse echo UPE , E-meter, Ultrasonic Pulse Velocity (2), Ground Penetrating Radar GPR, 2D Traverse Imaging, Thermal imaging, FLIR camera.            
• AIMS 3D Laser imaging                                                                                             
• LWD                                                                                                                            
• Maturity instrumentation                                                                                                                                                                              
• Mortar Testing Equipment                                                                                

* (servo-hydraulic DAQ and controllers, actuators, hydraulics and maniforlds, software). 

 

Sample Preparation & Conditioning

• Gyratory Compactors (2)                                                                                             
• PCC Freeze Thaw PCC system                                                                                   
• Freeze Thaw 3cf programmable                                                                                  
• RH variable conditioning (2)                                                                                       
• RH 100% curing high capacity (2)                                                                              
• RTFOT                                                                                                                          
• Sieve shakers high capacity (3)                                                                                   
• Sieve shakers low capacity (2)                                                                                     
• Mortar instrumentation                                                                                                
• PCC & HMA mixers (6)                                                                                             
• Coring systems (2)                                                                                                       
• Sample prep accessories                                                                                              
• Humboldt Compactor                                                                                                  
• Microduval                                                                                                                            
• Oven high capacity (2)                                                                                              
• SG setup                                                                                                                       
• Fabricating/ Machining stations (5)                                                                                     
• Sample prep accessories/ air content, slump, permeability, scales, other.                           

 

Data Acquisition & Instrumentation:

• DAQs, filtering modules, signal acquisition meters, LVDTs, strain gages, pressure cells, proving rings, other                                                                                    
• Transducers, load cells, LVDT, linear potentiometer, strain gages,  thermocouples, accelerometers.                                                                           
• PCC Extensometer 2D                                                                                                  
• SmartJig (with pressure cell/LVDT)                                                                           
• Software: Labview, FlexTest,Bluehill, Geostudio other.                                           

                                                

 

 

 

Auto Shredder Residue for Renewable Construction Materials (Low Carbon Transportation Materials, LCTM initiative).

Principal Investigator

Goulias, Dimitrios G.

Sponsors 

Joseph Smith & Sons Inc

https://smithindustriesgroup.com/

https://cee.umd.edu/news/story/goulias-tapped-to-develop-renewable-construction-materials

 

Evaluating Correlation Between Slip Resistance and Skid Resistance of Pavement Markings at Crosswalks

Principal Investigator

Goulias, Dimitrios G.

Sponsors 

Maryland State Highway Authority (MSHA)

Federal Highway Administration (FHWA)

 

Performance of Ultra Thin Bonded Wearing Course (UTBWC) During Winter Snow Ice Events

Principal Investigator

Goulias, Dimitrios G.

Sponsors 

Maryland State Highway Authority (MSHA)

Federal Highway Administration (FHWA)

 

Evaluating Maryland Asphalt Mixtures Using Balanced Mix Design for Durable Pavements

Principal Investigator

Goulias, Dimitrios G.

Sponsors 

Maryland State Highway Authority (MSHA)

Federal Highway Administration (FHWA)

 

Data Mining in Transportation Geomaterials & Infrastructure Health Monitoring Through Machine Learning

Principal Investigator

Goulias, Dimitrios G.

Sponsors 

Maryland Transportation Institute (USDOT)

https://cee.umd.edu/news/story/monitoring-bridge-wear-and-tearmdashwith-radar

 

 

Implementation of Ground Penetrating Radar for Condition Assessment & Monitoring of Critical Infrastructure Components of Bridges & Highways Phase I to Phase III

Principal Investigator

Goulias, Dimitrios G.

Sponsors 

Maryland State Highway Authority (MSHA)

Federal Highway Administration (FHWA)

 

 

Development of a Manual using Non-Destructive Testing (NDT) & Case Studies on Precast Concrete Elements in Highway Construction

Principal Investigator(s) 

Goulias, Dimitrios G.

Sponsors 

Federal Highway Administration

Objective of this project is to develop a guidance manual for State Highway Agencies (SHA) for non-structural precast concrete elements for highway construction.  The manual will provide effective uses for different types of non-destructive testing and inspection. Furthermore, it is the objective of the project to document three case studies of SHAs non-structural precast concrete elements acceptance programs. The case studies shall allow SHAs to utilize guidance for developing effective acceptance programs. Thus, the specific objectives are: (i) develop recommended procedures for nondestructive testing (NDT) of completed precast concrete elements; and (ii) document three case histories of acceptable and reasonable acceptance programs.

UPV and GPR–NDT Testing at Precast Concrete Elements

 

 

Effective Implementation of Ground Penetrating Radar (GPR) for Condition Assessment & Monitoring of Critical Infrastructure Components of Bridges and Highways

Principal Investigator(s) 

Goulias, Dimitrios G.

 

Sponsors 

Maryland State Highway Authority (MSHA)

Federal Highway Administration (FHWA)

The objective of this study is to assist State Highway Administration (SHA) engineers, technicians, and decision makers in their current effort to explore the use of Ground Penetrating Radar (GPR) in assessing the condition of critical infrastructure components and to identify potential improvements in GPR data analysis. With regard to pavement structures, a new methodology is suggested to improve the accuracy of GPR data analysis. The initial analysis and results indicate that this new method, Multi-scale Pavement GPR data Analysis (MPGA), has the potential to add value and accuracy to pavement thickness data used in pavement management and rehabilitation analysis. For bridge deck evaluation, the need to capture moisture effects and detailed depth information are imperative.  The use of advanced GPR data analysis techniques such as migration imaging (for concrete cover depth measurement applications among others), Fourier analysis of GPR waveforms (for qualitative bridge deck moisture analysis) and emerging techniques such as Short Time Fourier Transform analysis (for anticipated quantitative moisture analysis) are suggested. Current quality control (QC) on precast concrete elements is based on plant inspections and periodic audits that have important limitations.  Specifically, current precast quality assurance practices include labor intensive activities and sporadic inspections with the potential to miss important problems. This study examines how GPR can be used to address several of the inspection applications needed in precast concrete production, including an evaluation of concrete cover depth, reinforcement location and section thickness. The work under this multiyear project was undertaken in cooperation with ADOJAM and Starodub Inc.

 

GPR Pavement Thickness Evaluation using MPGA Analysis (US15)

Bridge Deck GPR Evaluation with Migration Analysis—Deterioration & Moisture Effects (Route 290)

 

GPR Data Analysis of a Precast Concrete Wall Panel: Integrated 2 to 3 Inch Depth

Note: Plan View Migrated Results (Hot/Red Color Map); Individual Alpha Numeric Scans (Gray Color Map)