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Moisture susceptibility of hydrated lime modified mastics using adhesion test methods and surface free energy techniques (2019)
Journal Article
Zaidi, S. B. A., Airey, G. D., Grenfell, J., Alfaqawi, R. M., Ahmed, I., Ahmad, N., & Haynes, M. (2019). Moisture susceptibility of hydrated lime modified mastics using adhesion test methods and surface free energy techniques. International Journal of Pavement Engineering, 1-13. https://doi.org/10.1080/10298436.2019.1648811

© 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group. Moisture damage is one of the major factors that has been reported to affect the performance of asphalt pavements which depends mainly on the bond strength between bitumen, aggre... Read More about Moisture susceptibility of hydrated lime modified mastics using adhesion test methods and surface free energy techniques.

Binder and Mixture Fatigue Performance of Plant-Produced Road Surface Course Asphalt Mixtures with High Contents of Reclaimed Asphalt (2019)
Journal Article
Subhy, A., Pires, G., Carrión, A., Lo Presti, D., & Airey, G. (2019). Binder and Mixture Fatigue Performance of Plant-Produced Road Surface Course Asphalt Mixtures with High Contents of Reclaimed Asphalt. Sustainability, 11(13), Article 3752. https://doi.org/10.3390/su11133752

© 2019 by the authors. The aged properties of Reclaimed Asphalt (RA) binders are one of the main factors working against their utilisation in high-RA content ( > 30%) mixes for surface courses. Fatigue cracking is the main distress of surface courses... Read More about Binder and Mixture Fatigue Performance of Plant-Produced Road Surface Course Asphalt Mixtures with High Contents of Reclaimed Asphalt.

Enhancement of curing properties of cold in-place recycling asphalt mixtures by induction heating (2019)
Journal Article
Pérez, I., Gómez-Meijide, B., Pasandín, A. R., García, A., & Airey, G. (2021). Enhancement of curing properties of cold in-place recycling asphalt mixtures by induction heating. International Journal of Pavement Engineering, 22(3), 355-368. https://doi.org/10.1080/10298436.2019.1609674

© 2019, © 2019 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. In this study, samples of cold in-place recycling mix (CIR) with steel fibres were manufactured and heated by electromagnetic induction. Heating was c... Read More about Enhancement of curing properties of cold in-place recycling asphalt mixtures by induction heating.

Effect of foaming technique and mixing temperature on the rheological characteristics of fine RAP-foamed bitumen mixtures (2019)
Journal Article
Sánchez, D. B., Airey, G., Caro, S., & Grenfell, J. (2020). Effect of foaming technique and mixing temperature on the rheological characteristics of fine RAP-foamed bitumen mixtures. Road Materials and Pavement Design, 21(8), 2143-2159. https://doi.org/10.1080/14680629.2019.1593228

This paper evaluates and compares the differences in the rheological characteristics of the fine aggregate matrix (FAM) portion of plant produced Foamed Bitumen Mixtures (FBMs) by means of a mechanical foaming process, and by the incorporation of zeo... Read More about Effect of foaming technique and mixing temperature on the rheological characteristics of fine RAP-foamed bitumen mixtures.

Development of compression pull-off test (CPOT) to assess bond strength of bitumen (2019)
Journal Article
Rahim, A., Thom, N., & Airey, G. (2019). Development of compression pull-off test (CPOT) to assess bond strength of bitumen. Construction and Building Materials, 207, 412-421. https://doi.org/10.1016/j.conbuildmat.2019.02.093

The quantification of moisture susceptibility has been a major concern for researchers as it adversely affects the performance of asphalt pavements. Several methods have been developed to assess bond strength using asphalt mixtures in loose and compa... Read More about Development of compression pull-off test (CPOT) to assess bond strength of bitumen.

Simulating plant produced material in the laboratory to replicate rheological and fatigue properties (2018)
Journal Article
Oshone, M., Pires, G. M., Jiménez del Barco Carrión, A., Rahbar-Rastegar, R., Airey, G., Daniel, J. S., Bailey, H., & Smith, D. (in press). Simulating plant produced material in the laboratory to replicate rheological and fatigue properties. Road Materials and Pavement Design, https://doi.org/10.1080/14680629.2018.1484384

As part of an effort by agencies and industry to move towards performance-based design to evaluate mixtures in the laboratory at a smaller scale before moving to full scale operation, laboratory protocols exist to simulate the aging that occurs as a... Read More about Simulating plant produced material in the laboratory to replicate rheological and fatigue properties.

The effects of laboratory ageing on rheological and fracture characteristics of different rubberised bitumens (2018)
Journal Article
Subhy, A., Pires, G. M., Lo Presti, D., & Airey, G. (2018). The effects of laboratory ageing on rheological and fracture characteristics of different rubberised bitumens. Construction and Building Materials, 180, https://doi.org/10.1016/j.conbuildmat.2018.05.273

Ageing of bituminous materials can result in loss of the durability of a flexible pavement. Using rubberised bitumens can enhance pavement performance while at the same time it solves a serious waste disposal problem. Combining Warm Mix Asphalt (WMA)... Read More about The effects of laboratory ageing on rheological and fracture characteristics of different rubberised bitumens.

Developing the multiple stress–strain creep recovery (MS-SCR) test (2018)
Journal Article
Elnasri, M. M. H., Airey, G., & Thom, N. (in press). Developing the multiple stress–strain creep recovery (MS-SCR) test. Mechanics of Time-Dependent Materials, https://doi.org/10.1007/s11043-018-9387-y

While most published work from Europe has been concerned with evaluating binders’ resistance to rutting based on their stiffness (deformation resistance), work originating in the US has mainly been concerned with ranking binders based on their recove... Read More about Developing the multiple stress–strain creep recovery (MS-SCR) test.

Linear viscous approach to predict rut depth in asphalt mixtures (2018)
Journal Article
Al-Mosawe, H., Thom, N., Airey, G., & Albayati, A. (in press). Linear viscous approach to predict rut depth in asphalt mixtures. Construction and Building Materials, 169, https://doi.org/10.1016/j.conbuildmat.2017.11.065

Rutting in asphalt mixtures is a very common type of distress. It occurs due to the heavy load applied and slow movement of traffic. Rutting needs to be predicted to avoid major deformation to the pavement. A simple linear viscous method is used i... Read More about Linear viscous approach to predict rut depth in asphalt mixtures.

Physical and rheological characterization of carbonated bitumen for paving applications (2017)
Journal Article
Apeagyei, A. K., & Airey, G. (2018). Physical and rheological characterization of carbonated bitumen for paving applications. Materials and Design, 140, https://doi.org/10.1016/j.matdes.2017.11.069

In the paving industry, current attempts aimed at reducing greenhouse gas emissions have focused on the development of technologies that decrease bitumen viscosity so that asphalt mixtures can be produced at temperatures that are lower than conventio... Read More about Physical and rheological characterization of carbonated bitumen for paving applications.

Relative pavement performance for dual and wide-based tyre assemblies using a finite element method (2017)
Journal Article
Casey, D., Airey, G., & Grenfell, J. (2017). Relative pavement performance for dual and wide-based tyre assemblies using a finite element method. Journal of Testing and Evaluation, 45(6), https://doi.org/10.1520/JTE20160589

There is a need to assess the realistic tire contact pressure created by a tire in contact with a pavement. The contact pressure is a function of tire type, axle loading, and tire inflation pressure (TiP). The research carried out considered dual tir... Read More about Relative pavement performance for dual and wide-based tyre assemblies using a finite element method.

Laboratory evaluation of Rediset modified bitumen based on rheology and adhesion properties (2017)
Journal Article
Zhang, J., Airey, G., Grenfell, J., & Yao, Z. (2017). Laboratory evaluation of Rediset modified bitumen based on rheology and adhesion properties. Construction and Building Materials, 152, https://doi.org/10.1016/j.conbuildmat.2017.07.037

Warm mix asphalt (WMA) could significantly reduce the production temperature of asphalt mixtures. Lower production temperature meaning reduced fossil fuel consumption and greenhouse gas emission which in turn avoid environmental pollution in the road... Read More about Laboratory evaluation of Rediset modified bitumen based on rheology and adhesion properties.

Structural design of pavements incorporating foamed bitumen mixtures (2017)
Journal Article
Kuna, K., Airey, G., & Thom, N. (in press). Structural design of pavements incorporating foamed bitumen mixtures. Proceedings of the ICE - Construction Materials, https://doi.org/10.1680/jcoma.16.00039

This paper presents a rational structural design methodology termed the ‘cumulative damage approach’ for road, port and airport pavements incorporating cold bituminous mixtures with foamed bitumen. This has been developed along with a laboratory test... Read More about Structural design of pavements incorporating foamed bitumen mixtures.

Active fillers’ effect on in situ performances of foam bitumen recycled mixtures (2016)
Journal Article
Betti, G., Airey, G., Jenkins, K., Marradi, A., & Tebaldi, G. (in press). Active fillers’ effect on in situ performances of foam bitumen recycled mixtures. Road Materials and Pavement Design, 18(2), https://doi.org/10.1080/14680629.2016.1213486

Cold recycling is one of the most employed rehabilitation techniques for asphalt pavements and it is becoming more and more important as reducing emissions becomes a priority in the reduction of the greenhouse effect. The main advantages of asphalt c... Read More about Active fillers’ effect on in situ performances of foam bitumen recycled mixtures.

Development of a tool to assess in-situ curing of Foamed Bitumen Mixtures (2016)
Journal Article
Kuna, K., Airey, G., & Thom, N. (2016). Development of a tool to assess in-situ curing of Foamed Bitumen Mixtures. Construction and Building Materials, 124, https://doi.org/10.1016/j.conbuildmat.2016.07.086

This paper discusses the simplest yet crucial mix design consideration of Foamed Bitumen Mixtures (FBMs); curing. The objective of the present study is to attain better understanding of the curing mechanism of FBMs and lessen the gap between laborato... Read More about Development of a tool to assess in-situ curing of Foamed Bitumen Mixtures.

Linear and nonlinear fractional hereditary constitutive laws of asphalt mixtures (2016)
Journal Article
Di Mino, G., AIREY, G., Di Paola, M., Pinnola, F. P., D’Angelo, G., & LO PRESTI, D. (2016). Linear and nonlinear fractional hereditary constitutive laws of asphalt mixtures. Journal of Civil Engineering and Management, 22(7), 882-889. https://doi.org/10.3846/13923730.2014.914104

The aim of this paper is to propose a fractional viscoelastic and viscoplastic model of asphalt mixtures using experimental data of several tests such as creep and creep recovery performed at different temperatures and at different stress levels. Fro... Read More about Linear and nonlinear fractional hereditary constitutive laws of asphalt mixtures.

Towards 100 % recycling of reclaimed asphalt in road surface courses: binder design methodology and case studies (2016)
Journal Article
Lo Presti, D., Jiménez Del Barco Carrión, A., Airey, G., & Hajj, E. (2016). Towards 100 % recycling of reclaimed asphalt in road surface courses: binder design methodology and case studies. Journal of Cleaner Production, 131, 43-51. https://doi.org/10.1016/j.jclepro.2016.05.093

Reclaimed Asphalt (RA) has shown great potential to be reused in new asphalt mixtures, however its incorporation in top asphalt pavement layers is still very limited (10-30%). In fact, despite the advantages that its use implies, RA content in road p... Read More about Towards 100 % recycling of reclaimed asphalt in road surface courses: binder design methodology and case studies.

Time dependent viscoelastic rheological response of pure, modified and synthetic bituminous binders (2016)
Journal Article
Airey, G. D., Grenfell, J., Apeagyei, A., Subhy, A., & Lo Presti, D. (in press). Time dependent viscoelastic rheological response of pure, modified and synthetic bituminous binders. Mechanics of Time-Dependent Materials, 20(3), 455-480. https://doi.org/10.1007/s11043-016-9295-y

Bitumen is a viscoelastic material that exhibits both elastic and viscous components of response and displays both a temperature and time dependent relationship between applied stresses and resultant strains. In addition, as bitumen is responsible fo... Read More about Time dependent viscoelastic rheological response of pure, modified and synthetic bituminous binders.

Mix design considerations of foamed bitumen mixtures with reclaimed asphalt pavement material (2016)
Journal Article
Kuna, K., Airey, G., & Thom, N. (in press). Mix design considerations of foamed bitumen mixtures with reclaimed asphalt pavement material. International Journal of Pavement Engineering, https://doi.org/10.1080/10298436.2015.1126271

In the present work, a mix design parametric study was carried out with the aim of proposing a practical and consistent mix design procedure for foamed bitumen mixtures (FBMs). The mix design parameters that were adopted in the study are mixing and c... Read More about Mix design considerations of foamed bitumen mixtures with reclaimed asphalt pavement material.