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Onifade, I., Dinegdae, Y. H. & Birgisson, B. (2017). Hierarchical approach for fatigue cracking performance evaluation in asphalt pavements. Frontiers of Structural and Civil Engineering, 11(3), 257-269
Open this publication in new window or tab >>Hierarchical approach for fatigue cracking performance evaluation in asphalt pavements
2017 (English)In: Frontiers of Structural and Civil Engineering, ISSN 2095-2430, E-ISSN 2095-2449, Vol. 11, no 3, p. 257-269Article in journal (Refereed) Published
Abstract [en]

In this paper, a hierarchical approach is proposed for the evaluation of fatigue cracking in asphalt concrete pavements considering three different levels of complexities in the representation of the material behaviour, design parameters characterization and the determination of the pavement response as well as damage computation. Based on the developed hierarchical approach, three damage computation levels are identified and proposed. The levels of fatigue damage analysis provides pavement engineers a variety of tools that can be used for pavement analysis depending on the availability of data, required level of prediction accuracy and computational power at their disposal. The hierarchical approach also provides a systematic approach for the understanding of the fundamental mechanisms of pavement deterioration, the elimination of the empiricism associated with pavement design today and the transition towards the use of sound principles of mechanics in pavement analysis and design.

Place, publisher, year, edition, pages
HIGHER EDUCATION PRESS, 2017
Keywords
fatigue cracking, energy based, crack initiation, mechanistic approach, pavement analysis
National Category
Civil Engineering
Identifiers
urn:nbn:se:kth:diva-214885 (URN)10.1007/s11709-017-0410-1 (DOI)000409070100001 ()2-s2.0-85020510132 (Scopus ID)
Note

QC 20171023

Available from: 2017-10-23 Created: 2017-10-23 Last updated: 2018-02-26Bibliographically approved
Onifade, I., Balieu, R. & Birgisson, B. (2016). Interpretation of the Superpave IDT strength test using a viscoelastic-damage constitutive model. Mechanics of time-dependant materials, 1-19
Open this publication in new window or tab >>Interpretation of the Superpave IDT strength test using a viscoelastic-damage constitutive model
2016 (English)In: Mechanics of time-dependant materials, ISSN 1385-2000, E-ISSN 1573-2738, p. 1-19Article in journal (Refereed) Published
Abstract [en]

This paper presents a new interpretation for the Superpave IDT strength test based on a viscoelastic-damage framework. The framework is based on continuum damage mechanics and the thermodynamics of irreversible processes with an anisotropic damage representation. The new approach introduces considerations for the viscoelastic effects and the damage accumulation that accompanies the fracture process in the interpretation of the Superpave IDT strength test for the identification of the Dissipated Creep Strain Energy (DCSE) limit from the test result. The viscoelastic model is implemented in a Finite Element Method (FEM) program for the simulation of the Superpave IDT strength test. The DCSE values obtained using the new approach is compared with the values obtained using the conventional approach to evaluate the validity of the assumptions made in the conventional interpretation of the test results. The result shows that the conventional approach over-estimates the DCSE value with increasing estimation error at higher deformation rates.

Place, publisher, year, edition, pages
Springer Netherlands, 2016
Keywords
Anisotropic damage, Asphalt concrete, Dissipated Creep Strain Energy (DCSE), Superpave IDT strength test, Visco-elastic-damage
National Category
Applied Mechanics
Identifiers
urn:nbn:se:kth:diva-187213 (URN)10.1007/s11043-016-9297-9 (DOI)000381982300010 ()2-s2.0-84961798950 (Scopus ID)
Note

QC 20161003

Available from: 2016-05-18 Created: 2016-05-18 Last updated: 2017-11-30Bibliographically approved
Onifade, I. & Birgisson, B. (2016). Investigation of Energy-Based Crack Initiation Threshold from Meso-Scale Asphalt Concrete Response. In: 8th RILEM International Conference on Mechanisms of Cracking and Debonding in Pavements: . Paper presented at 8th RILEM International Conference on Mechanisms of Cracking and Debonding in Pavements (pp. 679-685). Springer Netherlands
Open this publication in new window or tab >>Investigation of Energy-Based Crack Initiation Threshold from Meso-Scale Asphalt Concrete Response
2016 (English)In: 8th RILEM International Conference on Mechanisms of Cracking and Debonding in Pavements, Springer Netherlands, 2016, p. 679-685Conference paper, Published paper (Refereed)
Abstract [en]

The existence of a fundamental energy threshold for meso-scale crackinitiation is investigated using micromechanical modeling techniques. X-rayComputed Tomography (CT) is used to acquire the internal structure of an asphaltconcrete mixture while Digital Image Processing (DIP) techniques is used to segment and analyze the different phases present in the mixture. Finite Element (FE)modeling is used to simulate a tensile loading condition to establish a critical micromechanical criterion for meso-scale crack initiation. The meso-scale asphaltconcrete mixture is subjected to different loading rates to obtain the global strainenergy density at the instance when the critical micromechanical crack-initiationcriterion threshold is attained at different deformation rates. The result from thestudy shows that there exists a fundamental global strain energy density thresholdthat is invariant of the rate of loading at the instance of meso-scale crack initiation.The result of this study also shows the potential of the use of X-Ray computedtomography in understanding the cracking phenomenon in asphalt mixture.

Place, publisher, year, edition, pages
Springer Netherlands, 2016
Series
RILEM Bookseries, ISSN 2211-0844 ; 13
Keywords
Micromechanical damage, Micro-crack initiation, Asphalt concrete, X-ray tomography
National Category
Civil Engineering
Identifiers
urn:nbn:se:kth:diva-198660 (URN)10.1007/978-94-024-0867-6_95 (DOI)2-s2.0-85019180110 (Scopus ID)978-94-024-0866-9 (ISBN)978-94-024-0867-6 (ISBN)
Conference
8th RILEM International Conference on Mechanisms of Cracking and Debonding in Pavements
Funder
Swedish Transport Administration
Note

QC 20161220

Available from: 2016-12-19 Created: 2016-12-19 Last updated: 2018-09-19Bibliographically approved
Onifade, I. (2015). Development of a Morphology-based Analysis Framework for Asphalt Pavements. (Licentiate dissertation). Stockholm: KTH Royal Institute of Technology
Open this publication in new window or tab >>Development of a Morphology-based Analysis Framework for Asphalt Pavements
2015 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The morphology of asphalt mixtures plays a vital role in their properties and behaviour. The work in this thesis is aimed at developing a fundamental understanding of the effect of the asphalt morphology on the strength properties and deformation mechanisms for development of morphology-based analysis framework for long-term response prediction. Experimental and computational methods are used to establish the relationship between the mixture morphology and response. Micromechanical modeling is employed to understand the complex interplay between the asphalt mixture constituents resulting in strain localization and stress concentrations which are precursors to damage initiation and accumulation. Based on data from actual asphalt field cores, morphology-based material models which considers the influence of the morphology on the long-term material properties with respect to damage resistance, healing and ageing are developed. The morphology-based material models are implemented in a hot-mix asphalt (HMA) fracture mechanics framework for pavement performance prediction. The framework is able to predict top-down cracking initiation to a reasonable extent considering the variability of the input parameters. A thermodynamic based model for damage and fracture is proposed. The results from the study show that the morphology is an important factor which should be taken into consideration for determining the short- and long-term response of asphalt mixtures. Further understanding of the influence of the morphology will lead to the development of fundamental analytical techniques in design to establish the material properties and response to loads. This will reduce the empiricism associated with pavement design, reduce need for extensive calibration and validation, increase the prediction capability of pavement design tools, and advance pavement design to a new level science and engineering.

Abstract [sv]

Asfaltblandningars morfologi har en avgörande betydelse för deras egenskaper och beteenden. Arbetet i denna avhandling syftar till att utveckla en grundläggande förståelse för effekten av asfaltsmorfologin för deras hållfasthetsegenskaper och deformationsmekanismer och utveckling av ramverksanalysmorfologi baserat på långsiktig förutsägelse. Experimentella beräkningsmetoder används för att fastställa sambandet mellan blandningens morfologi och respons. Mikromekanisk modellering används för att förstå det komplexa samspelet mellan asfaltmassans beståndsdelar som resulterar i spänningslokalisering och spänningskoncentrationer som är föregångare till initiering av skador och ackumulation. Morfologibaserade materialmodeller beaktar påverkan av morfologin på de långsiktiga materialegenskaperna med avseende på skademotstånd, helande samt åldrande, och är utvecklade från data hos verkliga asfaltsfältskärnor. Morfologinbaserade materialmodeller är implementerade i en varmblandad asfalt-( HMA )-brottmekanik-ramverk för förutsägelse av beläggningsprestanda. Ramverket kan i rimlig utsträckning förutspå variationen i ingångsparametrarna ’top-down’ sprickbildningsinitiering. En termodynamiskbaserat ramverk föreslås för skador och brott. Resultaten från studien visar att morfologin är en viktig faktor som bör beaktas för att bestämma respons av asfaltblandningar på kort och lång sikt. Ytterligare förståelse av inverkan av morfologin kommer att leda till utvecklingen av grundläggande analytiska tekniker i design för fastställning av materialegenskaper och belastningars respons. Detta kommer att minska empirism som förknippas med beläggningskonstruktionen, minska behovet av omfattande kalibrering och validering, öka förutsägelseförmågan av designverktyg för beläggningen, samt avancera beläggningsdesign till en ny vetenskaplig nivå och ingenjörskonst.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2015. p. ix, 24
Series
TRITA-BYMA, ISSN 0349-5752 ; 2015:2
Keywords
Morphology, damage, X-ray computed tomography, top-down cracking, fracture, Morfologi, skador, röntgendatortomografi, ’top-down’sprickbildning, fraktur
National Category
Infrastructure Engineering
Research subject
Civil and Architectural Engineering; Materials Science and Engineering
Identifiers
urn:nbn:se:kth:diva-164863 (URN)
Presentation
2015-05-08, B26, Brinellvägen 23, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Funder
Translational Program in Diabetes Research, Education and Care
Note

QC 20150420

Available from: 2015-04-20 Created: 2015-04-20 Last updated: 2015-06-24Bibliographically approved
Onifade, I., Birgisson, B. & Balieu, R. (2015). Energy-Based Damage and Fracture Framework for Viscoelastic Asphalt Concrete. Engineering Fracture Mechanics, 145, 67-85
Open this publication in new window or tab >>Energy-Based Damage and Fracture Framework for Viscoelastic Asphalt Concrete
2015 (English)In: Engineering Fracture Mechanics, ISSN 0013-7944, E-ISSN 1873-7315, Vol. 145, p. 67-85Article in journal (Refereed) Published
Abstract [en]

A framework based on the continuum damage mechanics and thermodynamics of irreversible processes using internal state variables is used to characterize the distributed damage in viscoelastic asphalt materials in the form of micro-crack initiation and accumulation. At low temperatures and high deformation rates, micro-cracking is considered as the source of nonlinearity and thus the cause of deviation from linear viscoelastic response. Using a non-associated damage evolution law, the proposed model shows the ability to describe the temperature-dependent processes of micro-crack initiation, evolution and macro-crack formation with good comparison to the material response in the Superpave indirect tensile (IDT) strength test.

National Category
Infrastructure Engineering
Identifiers
urn:nbn:se:kth:diva-164894 (URN)10.1016/j.engfracmech.2015.07.003 (DOI)000362612900005 ()2-s2.0-84937231899 (Scopus ID)
Note

Updated from submitted to published.

QC 20151104

Available from: 2015-04-20 Created: 2015-04-20 Last updated: 2017-12-04Bibliographically approved
Dinegdae, Y. H., Onifade, I., Jelagin, D. & Birgisson, B. (2015). Mechanics-based Topdown Fatigue Cracking Initiation Prediction Framework for Asphaltic Pavements. International Journal on Road Materials and Pavement Design, 16(4)
Open this publication in new window or tab >>Mechanics-based Topdown Fatigue Cracking Initiation Prediction Framework for Asphaltic Pavements
2015 (English)In: International Journal on Road Materials and Pavement Design, ISSN 1468-0629, E-ISSN 2164-7402, Vol. 16, no 4Article in journal (Refereed) Published
Abstract [en]

In this paper, a new mechanics-based top-down fatigue cracking analysis framework is presented for asphalt pavements. A new mixture morphology-based set of material sub-models is presented for characterising key mixture properties and their change over time. Predicting the load induced top-down fatigue crack initiation (CI) time by utilising comprehensive mixture properties creates the possibility of optimising the mixture morphology while taking into account its subsequent effect on long-term pavement performance. The new framework was calibrated and subsequently validated against a number of field pavement sections with varying traffic levels that are representative for current practices and which have a wide range in material properties. The framework accounts the change in key mixture properties due to ageing and mixture-healing effect on damage accumulation while determining the overall effect of design inputs on cracking performance. Model calibration and validation were achieved based on the healing potential of the asphalt mixture. It was found out that the CI predictions for all the sections are in general agreement with the observed performance in the field, thus giving credibility for the framework.

Place, publisher, year, edition, pages
Taylor & Francis, 2015
National Category
Infrastructure Engineering
Identifiers
urn:nbn:se:kth:diva-164887 (URN)10.1080/14680629.2015.1055335 (DOI)000365527500010 ()2-s2.0-84948092823 (Scopus ID)
Note

QC 20161220

Available from: 2015-04-20 Created: 2015-04-20 Last updated: 2019-10-02Bibliographically approved
Onifade, I., Jelagin, D., Birgisson, B. & Kringos, N. (2015). Towards Asphalt Mixture Morphology Evaluation with the Virtual Specimen Approach. International Journal on Road Materials and Pavement Design
Open this publication in new window or tab >>Towards Asphalt Mixture Morphology Evaluation with the Virtual Specimen Approach
2015 (English)In: International Journal on Road Materials and Pavement Design, ISSN 1468-0629, E-ISSN 2164-7402Article in journal (Refereed) Published
Abstract [en]

The morphology of asphalt mixture can be defined as a set of parameters describing the geo-metrical characteristics of its constituent materials, their relative proportions as well as spatialarrangement in the mixture. The present study is carried out to investigate the effect of themorphology on its meso- and macro-mechanical response. An analysis approach is used forthe meso-structural characterisation based on the X-ray computed tomography (CT) data.Image processing techniques are used to systematically vary the internal structure to obtaindifferent morphology structures. A morphology framework is used to characterise the aver-age mastic coating thickness around the main load carrying structure in the structures. Theuniaxial tension simulation shows that the mixtures with the lowest coating thickness exhibitbetter inter-particle interaction with more continuous load distribution chains between adja-cent aggregate particles, less stress concentrations and less strain localisation in the masticphase.

Place, publisher, year, edition, pages
Taylor & Francis, 2015
National Category
Infrastructure Engineering
Identifiers
urn:nbn:se:kth:diva-164891 (URN)10.1080/14680629.2015.1098561 (DOI)000379747600004 ()2-s2.0-84945206184 (Scopus ID)
Note

QC 20160204

Available from: 2015-04-20 Created: 2015-04-20 Last updated: 2017-12-04Bibliographically approved
Onifade, I., Jelagin, D., Guarin, A., Birgisson, B. & Kringos, N. (2014). Effect of micro-scale morphological parameters on meso-scale response of Asphalt Concrete. In: Asphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014: . Paper presented at 12th International Conference on Asphalt Pavements, ISAP 2014, Raleigh, NC, United States, 1 June 2014 through 5 June 2014 (pp. 1775-1784). CRC Press
Open this publication in new window or tab >>Effect of micro-scale morphological parameters on meso-scale response of Asphalt Concrete
Show others...
2014 (English)In: Asphalt Pavements - Proceedings of the International Conference on Asphalt Pavements, ISAP 2014, CRC Press, 2014, p. 1775-1784Conference paper, Published paper (Refereed)
Abstract [en]

With recent advancement in the use of X-Ray Computed Tomography to capture the internal structure of Asphalt Concrete (AC), results have shown several possibilities to account for the distribution of the different phases in the mix and quantify them in a reliable way. The morphology of asphalt mixtures which includes the aggregate size gradation and the distribution of the air-voids and bitumen phase are captured in a single morphological parameter called the Primary Structure (PS) coating thickness-(Tps). In this study, the effect of variations in the morphological micro-structural property on the mesoscale response of three (3) AC samples is examined using the 3D Finite Element Method (FEM). The AC internal geometry is acquired using X-Ray Computed Tomography (CT); the distribution of the aggregates, mastic and air-voids phase is considered and obtained using Digital Imaging Processing (DIP) techniques. Using a surface-based cohesive behavior and assuming a predominant adhesive failure at the interface between the mastic and aggregate, a maximum traction criterion is used to obtain the damage propensity of the different mixtures. The result of the analysis shows that the microstructural morphological parameter Tps adequately captures the meso-scale response of the mixtures; there exist an inverse relationship between mixture strength characterization and the morphological parameter Tps.

Place, publisher, year, edition, pages
CRC Press, 2014
Keywords
Asphalt concrete morphology, Damage, Digital image processing, Micromechanical modeling, X-Ray computed tomography
National Category
Civil Engineering
Research subject
Civil and Architectural Engineering
Identifiers
urn:nbn:se:kth:diva-149536 (URN)10.1201/b17219-214 (DOI)000347408100166 ()2-s2.0-84904097605 (Scopus ID)978-1-315-73675-4 (ISBN)
Conference
12th International Conference on Asphalt Pavements, ISAP 2014, Raleigh, NC, United States, 1 June 2014 through 5 June 2014
Note

QC 20150203

Available from: 2014-08-22 Created: 2014-08-22 Last updated: 2015-02-16Bibliographically approved
Onifade, I., Jelagin, D., Guarin, A., Birgisson, B. & Kringos, N. (2013). Asphalt Internal Structure Characterization with X-Ray Computed Tomography and Digital Image Processing. In: Multi-Scale Modeling and Characterization of Infrastructure Materials: Proceedings of the International RILEM Symposium Stockholm, June 2013. Paper presented at International RILEM Symposium Stockholm, June 2013 (pp. 139-158). Springer Netherlands
Open this publication in new window or tab >>Asphalt Internal Structure Characterization with X-Ray Computed Tomography and Digital Image Processing
Show others...
2013 (English)In: Multi-Scale Modeling and Characterization of Infrastructure Materials: Proceedings of the International RILEM Symposium Stockholm, June 2013, Springer Netherlands, 2013, p. 139-158Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, detailed study is carried out to develop a new workflow from image acquisition to numerical simulation for the asphalt concrete microstructures. High resolution computed tomography scanned images are acquired and the image quality is improved using digital image processing techniques. Nonuniform illumination is corrected by applying an illumination profile to correct the background and flat-fields in the image. Distance map based watershed segmentation are used to segment the phases and separate the aggregates. Quantitative analysis of the micro-structure is used to determine the phase volumetric relationship and aggregates characteristics. The result of the quantitative analysis showed a very high level of reliability. Finite Element simulations were carried out with the developed micro-mechanical meshes to capture the strength and deformation mechanisms of the asphalt concrete micro-structure. From the micro-mechanical investigation the load transfer chains, higher strength characteristics and high stress localization at the mastic interface between adjacent aggregates was shown.

Place, publisher, year, edition, pages
Springer Netherlands, 2013
Series
RILEM Bookseries, ISSN 2211-0844 ; 8
Keywords
X-ray computed tomography, digital image processing, finite element method, image based modeling, asphalt concrete
National Category
Transport Systems and Logistics Infrastructure Engineering
Research subject
SRA - Transport
Identifiers
urn:nbn:se:kth:diva-125180 (URN)10.1007/978-94-007-6878-9_11 (DOI)978-94-007-6877-2 (ISBN)978-94-007-6878-9 (ISBN)
Conference
International RILEM Symposium Stockholm, June 2013
Note

QC20130830

Available from: 2013-08-07 Created: 2013-08-07 Last updated: 2014-09-17Bibliographically approved
Onifade, I. Continuum Plasticity Mechanics (CPM) - An energy-based plasticity model - Application to asphalt concrete mixtures.. International Journal of Solids and Structures
Open this publication in new window or tab >>Continuum Plasticity Mechanics (CPM) - An energy-based plasticity model - Application to asphalt concrete mixtures.
(English)In: International Journal of Solids and Structures, ISSN 0020-7683, E-ISSN 1879-2146Article in journal (Refereed) Submitted
Abstract [en]

A new generalized energy-based elasto-plastic constitutive model for both pressure-sensitive and pressure insensitive materials is developed and presented in this paper. The model is developed with the energy formulation which inherently captures the rate-sensitivity and can be used to model a wide range of materials ranging from rate-dependent materials such as polymers and asphalt concrete to rate-independent materials such as steel. No additional rate-dependency parameters is required to model rate dependent behaviour at different strain-rates. The new energy-based plasticity formulation takes a similar form as the conceptsused in continuum damage mechanics with the plastic strain transformed into a plasticity variable whichenters into the formulation to obtain the corresponding stress and strain due to the applied or subjected load conditions. The new energy-based plasticity formulation fits nicely into the thermodynamics framework thereby providing a true unifying framework for coupling damage and plasticity

Keywords
Continuum Plasticity Mechanics CPM, energy-based plasticity, plasticity variable, viscoplasticity
National Category
Civil Engineering
Identifiers
urn:nbn:se:kth:diva-198662 (URN)
Note

QS 201612

Available from: 2016-12-19 Created: 2016-12-19 Last updated: 2017-11-29Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0003-2849-5263

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