Towards Improved Sensor Systems For Bridge Structural Health Monitoring,
2020
School of Electronics, Electrical Engineering and Computer Science, Queen's University Belfast
Towards Improved Sensor Systems For Bridge Structural Health Monitoring, Alan Ferguson, Roger Woods, David Hester
Civil Engineering Research in Ireland 2020
Taking long-term measurements on in-service bridges is challenging due to the lack of easy access to power and communications. Whilst all-in-one, portable sensor data loggers act to address these challenges, they still lack the flexibility to meet evolving measurement needs. This paper presents the design and implementation of a highly flexible, modular sensor system for bridge structural health monitoring research, which has an emphasis on customisability and extensibility to allow it to meet evolving challenges. The architecture incorporates interchangeable sensor modules that allows data acquisition to an on-board Secure Digital card, with timing and synchronisation provided by global positioning system …
Towards Automated Uav Assisted Bridge Inspections Using Photogrammetry And Image Processing Techniques,
2020
School of Natural and Built Environment, Queen's University Belfast
Towards Automated Uav Assisted Bridge Inspections Using Photogrammetry And Image Processing Techniques, Habeene Habeenzu, Patrick Mcgetrick, David Hester, Su Taylor, Louie Wong
Civil Engineering Research in Ireland 2020
At the heart of addressing bridge condition challenges are bridge inspections. The main activity during a bridge inspection is close, arm’s length visual inspection of the entire bridge structure. During this process, all defects such as cracks, spalls and material degradation are manually recorded on the bridge itself and on inspection forms. Where access is difficult such as where a safe working platform cannot be mounted under bridge decks, or on high bridges, expensive underbridge equipment is required which when used results in expensive lane closures. Furthermore, visual inspections have been shown to lack consistency from inspector to inspector and …
Acceleration Based Bridge Weigh In Motion Using Moving Force,
2020
School of Civil Engineering, University College Dublin, Ireland
Acceleration Based Bridge Weigh In Motion Using Moving Force, Shou Wang, Daniel Mccrum, Eugene O'Brien
Civil Engineering Research in Ireland 2020
Measuring vehicle axles weights is an important method to control traffic and monitor infrastructure. Traditional methods of measuring the static weight of vehicles at a weigh station is disruptive and time consuming. It is more cost effective and efficient to indirectly measure moving vehicle weights crossing a bridge. The weigh-in-motion concept, first proposed by Moses (1979) is an algorithm that uses measured bridge structural response (deflection, strain, …) due to passing vehicles to and a theoretical response. Moving Force identification (MFI) is a variation of the dynamic WIM algorithm that gives a force time history as a vehicle passes the …
A Two-Stage Direct Integration Approach To Find The Railway Track Profile Using In-Service Trains,
2020
School of Civil Engineering, University College Dublin
A Two-Stage Direct Integration Approach To Find The Railway Track Profile Using In-Service Trains, Yifei Ren, Jennifer Kennahan, Eugene O'Brien
Civil Engineering Research in Ireland 2020
The railway track is an important element in transportation networks. In recent years, drive-by monitoring of railways has become more popular. Using data measured from in-service trains, the railway profile can be found. In previous research, a complex optimiziton method is used to calculate the railway profile. This paper introduces a new two-stage direct integration approach to find the same track profile much more efficiently. The calculated track profile is similar to a ‘true’ profile and can be used to monitor the condition of the track.
Investigating The Contact-Point Response For Drive-By Damage Detection In Bridges,
2020
School of Civil Engineering, University College Dublin
Investigating The Contact-Point Response For Drive-By Damage Detection In Bridges, Robert Corbally, Abdollah Malekjafarian
Civil Engineering Research in Ireland 2020
Bridges are critical elements in any road or rail transport network and ensuring their safety is paramount. Recent years have seen significant research efforts to develop cost-effective techniques for bridge monitoring on a large scale. Drive-by bridge inspection techniques, whereby sensors inside a vehicle are used to monitor bridge condition, are at the focus of much of this work. This paper develops a relationship between the measured response in a vehicle and the contact-point response between the wheel and the surface of a bridge using a quarter-car representation of the vehicle. Numerical simulations are carried out to examine the feasibility …
Application Of The Iec Technical Specification For Assessment Of Wave Energy Resource: A Case Study From The West Coast Of Ireland,
2020
College of Science & Engineering, National University of Ireland Galway, Galway, Ireland
Application Of The Iec Technical Specification For Assessment Of Wave Energy Resource: A Case Study From The West Coast Of Ireland, Iulia Anton, Stephen Nash
Civil Engineering Research in Ireland 2020
There is significant interest globally in harnessing our ocean wave energy resource, estimated at approximately 30,000 TWh/year. The key to this is understanding the resource. The International Electrotechnical Commission (IEC) has developed a technical specification for the evaluation of wave energy resource, IEC-TS 62600- 101: Wave energy resource assessment and characterization. This research applies the IEC standard for a resource characterization study of the Atlantic Marine Energy Test Site on the west coast of Ireland. A key focus is the comparison of the detailed IEC validation approach using scatter diagrams with the traditional timeseries validation approach. Coarse (0.005°) and fine …
Wind Power Prediction And Early Downtime Detection For Ireland,
2020
Dynamical Systems and Risk Laboratory, School of Mechanical and Materials Engineering, University College Dublin
Wind Power Prediction And Early Downtime Detection For Ireland, Vikram Pakrashi, Basuraj Bhowmik, Juan Manuel González-Sopeña, Paul Mucchielli, Bidisha Ghosh
Civil Engineering Research in Ireland 2020
Wind energy must be commercially competitive to be economically sustainable. Existing wind farms in Ireland must be more efficient to meet the 2009 EU Renewable Energy Directive target of 7% of total energy demand from onshore wind energy farms, which is 45% of the total national renewable energy target of 16%. WindPearl - a Sustainable EnergyAuthority of Ireland (SEAI) funded project is currently looking into improvin operations & maintenance (O&M) of onshore wind turbine farms in Ireland.
An Experimental Investigation Of The Optimum Properties And Conditions For Use Of Anionic Emulsions In Road Maintenance Applications,
2020
Dept. of Building & Civil Eng., Galway-Mayo Institute of Technology, Galway Campus, Dublin Road, Galway, Ireland; Chemoran, Deerpark Industrial Estate, Oranmore, Co. Galway, H91 D934, Ireland
An Experimental Investigation Of The Optimum Properties And Conditions For Use Of Anionic Emulsions In Road Maintenance Applications, Simonas Ignatavicius, Alan Kavanagh, David Colleran, Michael J. Brennan, Shane Newell
Civil Engineering Research in Ireland 2020
Bitumen emulsions are used for a range of road maintenance applications, including surface dressing, gravel seals, slurry seals, tack coating, cold-mix asphalt and in situ pavement recycling. The emulsions used can be classified as being either cationic (i.e. possessing a positive electrostatic surface charge) or anionic (i.e. carrying a negative electrostatic surface charge). The vast majority of emulsions used for such applications in Europe are cationic, while anionic bitumen emulsions are used widely throughout North America and Africa. The aims of the experimental study described in this paper were (a) to investigate why one or the other emulsion type is …
A Review Of Vision Based Methods For Pothole Detection And Road Profile Analysis,
2020
Mechanical and Manufacturing Engineering, Queen’s University Belfast, Belfast, Northern Ireland
A Review Of Vision Based Methods For Pothole Detection And Road Profile Analysis, Darragh Lydon, Su Taylor, Myra Lydon, Julia Early
Civil Engineering Research in Ireland 2020
This paper is an overview of the development and application of Computer Vision for the detection of pothole, pavement distress and road profile analysis and categorisation. A brief explanation of the traditional methods for determining these factors is given, followed by a chronological description of the evolution and the challenges of using Computer Vision (CV) approaches to determine these conditions. The paper is separated into sections aligned to image capture and analysis methodologies. Qualitative evaluations and comparison of these methods have been provided along with the proposal of guidelines for new computer vision-based road analysis systems.
Analysis And Optimisation Of Tii’S Pams Reset Values And Deterioration Models For Irish Pavement Conditions,
2020
PMS Pavement Management Services Ltd. Raheen Industrial Estate, Athenry, Galway, H65 PD37 Ireland; Department of Civil Engineering, Institute of Technology Sligo, Ash Lane, Sligo, F91 YW50 Ireland
Analysis And Optimisation Of Tii’S Pams Reset Values And Deterioration Models For Irish Pavement Conditions, James Quinn, Raymond Mcgowan, Tomas O'Flaherty
Civil Engineering Research in Ireland 2020
Ireland has a national road network of approximately 5300km that is managed by Transport Infrastructure Ireland (TII). TII create yearly pavement maintenance and renewal programs from the operation of a Pavement Asset Management System (PAMS). Accurate pavement deterioration models and reset values are an essential part of PAMS and are required for life cycle cost analysis (LCCA). Pavement maintenance and renewal schemes are prioritised based on the LCCA's largest benefit to cost ratio, and therefore optimise the annual pavement maintenance and renewal budget. Currently, TII implement pavement deterioration models and reset values from Austria's and Belgium's PAMS, and are not …
An Analysis Of The Effectiveness Of Bitumen Additives On The Performance Of Pavement Surface Dressings,
2020
Department of Civil Engineering, Institute of Technology Sligo, Ash Lane, Sligo, F91 YW50 Ireland; Colas Bitumen Emulsions LTD, Oranmore, Co Galway
An Analysis Of The Effectiveness Of Bitumen Additives On The Performance Of Pavement Surface Dressings, Alan Anderson, John Casserly, Alan Kavanagh, Jim Campbell
Civil Engineering Research in Ireland 2020
Surface dressing is a maintenance technique that uses thin layers of bitumen emulsion and single sized aggregates. The surface dressing process seals and binds the surface of a road to protect its substructure from water ingress. It also provides increased skid resistance, which improves safety for road users. Early life chip-loss can occur if there is an insufficient degree of adhesion between the emulsion and aggregate used. The range of additives used in bitumen can have an effect on their adhesion properties. The focus of this research project was to investigate if the use of these additives in surface dressing …
Winter Maintenance On The Irish Road Network,
2020
School of Engineering and Design, Institute of Technology, Sligo, Ireland
Winter Maintenance On The Irish Road Network, Hugh Mcconnell, Brian Mccann
Civil Engineering Research in Ireland 2020
Winter maintenance relates to those activities undertaken where the objective is to minimise the impact of frost, ice or snow on the travelling public. The responsibility for winter maintenance of all roads in Ireland currently rests with local authorities and Transport Infrastructure Ireland (TII) (Formerly the NRA) on behalf of the Department of Transport, Tourism and Sport (DTTaS), (DTTaS, 2017). The aim of the study was to examine current winter maintenance practices undertaken in Ireland by local authorities and the Motorway Maintenance and Renewals Contracts (MMaRC) contractors and examine the potential financial, operational and environmental benefits if pre-wet and brine …
An Experimental Investigation Of The Optimum Properties And Conditions For Use Of Anionic Emulsions In Road Maintenance Applications,
2020
Dept. of Building & Civil Eng., Galway-Mayo Institute of Technology, Galway Campus, Dublin Road, Galway, Ireland; Chemoran, Deerpark Industrial Estate, Oranmore, Co. Galway, H91 D934, Ireland
An Experimental Investigation Of The Optimum Properties And Conditions For Use Of Anionic Emulsions In Road Maintenance Applications, Simonas Ignatavicius, Alan Kavanagh, David Colleran, Michael J. Brennan, Shane Newell
Civil Engineering Research in Ireland 2020
Bitumen emulsions are used for a range of road maintenance applications, including surface dressing, gravel seals, slurry seals, tack coating, cold-mix asphalt and in situ pavement recycling. The emulsions used can be classified as being either cationic (i.e. possessing a positive electrostatic surface charge) or anionic (i.e. carrying a negative electrostatic surface charge). The vast majority of emulsions used for such applications in Europe are cationic, while anionic bitumen emulsions are used widely throughout North America and Africa. The aims of the experimental study described in this paper were (a) to investigate why one or the other emulsion type is …
A Review Of Vision Based Methods For Pothole Detection And Road Profile Analysis,
2020
Mechanical and Manufacturing Engineering, Queen’s University Belfast, Belfast, Northern Ireland
A Review Of Vision Based Methods For Pothole Detection And Road Profile Analysis, Darragh Lydon, S. E. Taylor, Myra Lydon, Julia Early
Civil Engineering Research in Ireland 2020
This paper is an overview of the development and application of Computer Vision for the detection of pothole, pavement distress and road profile analysis and categorisation. A brief explanation of the traditional methods for determining these factors is given, followed by a chronological description of the evolution and the challenges of using Computer Vision (CV) approaches to determine these conditions. The paper is separated into sections aligned to image capture and analysis methodologies. Qualitative evaluations and comparison of these methods have been provided along with the proposal of guidelines for new computer vision-based road analysis systems.
Analysis And Optimisation Of Tii’S Pams Reset Values And Deterioration Models For Irish Pavement Conditions,
2020
PMS Pavement Management Services Ltd. Raheen Industrial Estate, Athenry, Galway, H65 PD37 Ireland; Department of Civil Engineering, Institute of Technology Sligo, Ash Lane, Sligo, F91 YW50 Ireland
Analysis And Optimisation Of Tii’S Pams Reset Values And Deterioration Models For Irish Pavement Conditions, James Quinn, Raymond Mcgowan, Tomas O'Flaherty
Civil Engineering Research in Ireland 2020
Ireland has a national road network of approximately 5300km that is managed by Transport Infrastructure Ireland (TII). TII create yearly pavement maintenance and renewal programs from the operation of a Pavement Asset Management System (PAMS). Accurate pavement deterioration models and reset values are an essential part of PAMS and are required for life cycle cost analysis (LCCA). Pavement maintenance and renewal schemes are prioritised based on the LCCA's largest benefit to cost ratio, and therefore optimise the annual pavement maintenance and renewal budget. Currently, TII implement pavement deterioration models and reset values from Austria's and Belgium's PAMS, and are not …
An Analysis Of The Effectiveness Of Bitumen Additives On The Performance Of Pavement Surface Dressings,
2020
Department of Civil Engineering, Institute of Technology Sligo, Ash Lane, Sligo, F91 YW50 Ireland; Colas Bitumen Emulsions LTD, Oranmore, Co Galway
An Analysis Of The Effectiveness Of Bitumen Additives On The Performance Of Pavement Surface Dressings, Alan Anderson, John Casserly, Alan Kavanagh, Jim Campbell
Civil Engineering Research in Ireland 2020
Surface dressing is a maintenance technique that uses thin layers of bitumen emulsion and single sized aggregates. The surface dressing process seals and binds the surface of a road to protect its substructure from water ingress. It also provides increased skid resistance, which improves safety for road users. Early life chip-loss can occur if there is an insufficient degree of adhesion between the emulsion and aggregate used. The range of additives used in bitumen can have an effect on their adhesion properties. The focus of this research project was to investigate if the use of these additives in surface dressing …
Winter Maintenance On The Irish Road Network,
2020
School of Engineering and Design, Institute of Technology, Sligo, Ireland
Winter Maintenance On The Irish Road Network, Hugh Mcconnell, Brian Mccann
Civil Engineering Research in Ireland 2020
Winter maintenance relates to those activities undertaken where the objective is to minimise the impact of frost, ice or snow on the travelling public. The responsibility for winter maintenance of all roads in Ireland currently rests with local authorities and Transport Infrastructure Ireland (TII) (Formerly the NRA) on behalf of the Department of Transport, Tourism and Sport (DTTaS), (DTTaS, 2017). The aim of the study was to examine current winter maintenance practices undertaken in Ireland by local authorities and the Motorway Maintenance and Renewals Contracts (MMaRC) contractors and examine the potential financial, operational and environmental benefits if pre-wet and brine …
Thermodynamic Cement Hydration Modelling Using Hydcem,
2020
Technological University Dublin
Thermodynamic Cement Hydration Modelling Using Hydcem, Niall Holmes, Denis Kelliher, Mark Tyrer
Conference papers
Thermodynamics have been successfully applied to the field of cement hydration science to predict the formation of phase assemblages and pore solution chemistry. For any cement hydration model to be accepted, it must provide accurate forecasts of which solids may form and how the cement will dissolve over time. This is particularly important for the ongoing development of new sustainable cements and understanding their hydration behaviour in service. HYDCEM is a cement hydration model that simulates volumetric changes of cement and gypsum dissolution and product growth that, up to now, assumed which solids would form. In order to improve its …
Effects Of Accelerated Carbonation Curing On Co2 Sequestration And On The Compressive Strength Of Concrete Masonry Units,
2020
Mattest Ireland
Effects Of Accelerated Carbonation Curing On Co2 Sequestration And On The Compressive Strength Of Concrete Masonry Units, Barry Gilroy, Leon Black, David Thompson, Ronan Hogan, Niall Holmes
Conference papers
The global consumption of Portland cement has risen to over 4 billion tonnes per annum. Its manufacture is energy and carbon intensive and approximately 900 kg of CO2 is emitted into the atmosphere for each tonne of Portland cement produced. The International Energy Agency (IEA) roadmap sets out a goal to reduce emissions due to cement production to 18 % below 2006 levels by 2050. Concrete has the potential to re-absorb CO2 by the process of carbonation, where it reacts with CaO in the concrete to form calcium carbonate. Accelerated carbonation curing (ACC) is a technique for curing fresh concrete …
Predicting Mortar Compressive Strength Using Hydcem,
2020
Technological University Dublin
Predicting Mortar Compressive Strength Using Hydcem, Ewoma Ogoro, Niall Holmes, Denis Kelliher, Mark Tyrer
Conference papers
The compressive strength of mortar is a significant property that will influence its performance in concrete or masonry. Being able to accurately model and predict the mortar compressive strength would be of great benefit to suppliers and end users alike that could possibly reduce the need for multiple physical testing. A section of the original HYDCEM cement hydration model (amoungst others) has been partitioned to focus on predicting the compressive strength of Portland cement and cement-limestone mortars, entitled HYDCEM_CompressiveStrength. The model uses the cement/binder oxide composition along with other inputs to predict the compressive strength development over time. This paper …
