All Outputs (101)

Moisture damage evaluation of aggregate–bitumen bonds with the respect of moisture absorption, tensile strength and failure surface (2017)
Journal Article
Zhang, J., Airey, G. D., Grenfell, J., & Apeagyei, A. K. (in press). Moisture damage evaluation of aggregate–bitumen bonds with the respect of moisture absorption, tensile strength and failure surface. Road Materials and Pavement Design, 18(4), https://doi.org/10.1080/14680629.2017.1286441

The moisture-induced deterioration of asphalt mixture is because of the loss of adhesion at the aggregate–bitumen interface and/or the loss of cohesion within the bitumen film. An experimental study was undertaken in this paper to characterise the ef... Read More about Moisture damage evaluation of aggregate–bitumen bonds with the respect of moisture absorption, tensile strength and failure surface.

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.

Moisture sensitivity examination of asphalt mixtures using thermodynamic, direct adhesion peel and compacted mixture mechanical tests (2016)
Journal Article
Zhang, J., Airey, G. D., Grenfell, J., & Apeagyei, A. K. (2018). Moisture sensitivity examination of asphalt mixtures using thermodynamic, direct adhesion peel and compacted mixture mechanical tests. Road Materials and Pavement Design, 19(1), 120-138. https://doi.org/10.1080/14680629.2016.1249510

Moisture damage in asphalt mixtures is a complicated mode of pavement distress that results in the loss of stiffness and structural strength of the asphalt pavement layers. This paper evaluated the moisture sensitivity of different aggregate–bitumen... Read More about Moisture sensitivity examination of asphalt mixtures using thermodynamic, direct adhesion peel and compacted mixture mechanical tests.

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.

Development of a composite substrate peel test to assess moisture sensitivity of aggregate–bitumen bonds (2016)
Journal Article
Zhang, J., Airey, G. D., Grenfell, J., Apeagyei, A. K., & Barrett, M. (2016). Development of a composite substrate peel test to assess moisture sensitivity of aggregate–bitumen bonds. International Journal of Adhesion and Adhesives, 68, https://doi.org/10.1016/j.ijadhadh.2016.02.013

This paper presents the development of a suitable procedure to prepare peel test specimens using coarse aggregates and compare the results with the established standard peel test. The newly developed composite substrate peel test (CSPT) was found to... Read More about Development of a composite substrate peel test to assess moisture sensitivity of aggregate–bitumen bonds.

Chemical pavement modifications to reduce ice adhesion (2016)
Journal Article
Wright, M., Parry, T., & Airey, G. (in press). Chemical pavement modifications to reduce ice adhesion. Proceedings of the ICE - Transport, 169(2), https://doi.org/10.1680/jtran.14.00053

The formation of ice and snow on road pavement surfaces is a recurring problem, creating hazardous driving conditions, restricting public mobility as well as having adverse economic effects. It would be desirable to develop new and improved ways of m... Read More about Chemical pavement modifications to reduce ice adhesion.

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.

Effect of aggregate gradation on the stiffness of asphalt mixtures (2015)
Journal Article
Al-Mosawe, H., Thom, N., Airey, G., & Ai-Bayati, A. (2015). Effect of aggregate gradation on the stiffness of asphalt mixtures. International Journal of Pavement Engineering and Asphalt Technology, 16(2), https://doi.org/10.1515/ijpeat-2015-0008

Aggregate gradation plays an important role in the behaviour of asphalt mixtures. Packing of aggregate is a very important factor that will be affected by changing the aggregate gradation. Many researchers have investigated different ways of describi... Read More about Effect of aggregate gradation on the stiffness of asphalt mixtures.

Rubberised bitumen manufacturing assisted by rheological measurements (2015)
Journal Article
Subhy, A., Subhy, A., Lo Presti, D., & Airey, G. (2016). Rubberised bitumen manufacturing assisted by rheological measurements. Road Materials and Pavement Design, 17(2), 290-310. https://doi.org/10.1080/14680629.2015.1079549

This paper investigates the effect of processing temperature and time on the rheological properties of recycled tyre rubber-modified bitumens (RTR-MBs) produced using two different base binders and an ambient ground crumb rubber modifier (CRM). The p... Read More about Rubberised bitumen manufacturing assisted by rheological measurements.

Tests Campaign Analysis to Evaluate the Capability of Fragmentation Test to Characterize Recycled Asphalt Pavement (RAP) Material (2015)
Conference Proceeding
Perraton, D., Tebaldi, G., Dave, E., Bilodeau, F., Giacomello, G., Grilli, A., …Marsac, P. (2016). Tests Campaign Analysis to Evaluate the Capability of Fragmentation Test to Characterize Recycled Asphalt Pavement (RAP) Material. In F. Canestrari, & M. N. Partl (Eds.), 8th RILEM International Symposium on Testing and Characterization of Sustainable and Innovative Bituminous Materials (965-976). https://doi.org/10.1007/978-94-017-7342-3_77

Cold and hot recycling of reclaimed asphalt pavement (RAP) is increasingly gaining in popularity worldwide due to the need to increase the sustainability of asphalt pavement, both from environmental and economic perspectives. Despite the increasing o... Read More about Tests Campaign Analysis to Evaluate the Capability of Fragmentation Test to Characterize Recycled Asphalt Pavement (RAP) Material.

Experimental evaluation of cohesive and adhesive bond strength and fracture energy of bitumen-aggregate systems (2015)
Journal Article
Zhang, J., Airey, G. D., & Grenfell, J. R. (2016). Experimental evaluation of cohesive and adhesive bond strength and fracture energy of bitumen-aggregate systems. Materials and Structures, 49(7), 2653-2667. https://doi.org/10.1617/s11527-015-0674-7

Degradation of asphalt pavements is an inevitable phenomenon due to the combined effects of high traffic loads and harsh environmental conditions. Deterioration can be in the form of cohesive failure of the bitumen and/or bitumen-filler mastic or by... Read More about Experimental evaluation of cohesive and adhesive bond strength and fracture energy of bitumen-aggregate systems.

Influence of aggregate mineralogical composition on water resistance of aggregate–bitumen adhesion (2015)
Journal Article
Zhang, J., Apeagyei, A. K., Airey, G. D., & Grenfell, J. R. (2015). Influence of aggregate mineralogical composition on water resistance of aggregate–bitumen adhesion. International Journal of Adhesion and Adhesives, 62, https://doi.org/10.1016/j.ijadhadh.2015.06.012

The effects of aggregate mineralogical composition on moistures sensitivity of aggregate–bitumen bonds were investigated using four aggregate types (two limestone and two granite)and two bitumen grades (40/60 penand70/100pen). Moisture sensitivity... Read More about Influence of aggregate mineralogical composition on water resistance of aggregate–bitumen adhesion.

Chemically modified bitumens with enhanced rheology and adhesion properties to siliceous aggregates (2015)
Journal Article
Cuadri, A., Partal, P., Ahmad, N., Grenfell, J., & Airey, G. (2015). Chemically modified bitumens with enhanced rheology and adhesion properties to siliceous aggregates. Construction and Building Materials, 93, https://doi.org/10.1016/j.conbuildmat.2015.05.098

Moisture damage is one of the major premature failures that worsens the performance and shortens service life of pavements. This research assesses the effect that two chemical modifiers (thiourea and an isocyanate-functionalized castor oil prepolymer... Read More about Chemically modified bitumens with enhanced rheology and adhesion properties to siliceous aggregates.

Influence of aggregate absorption and diffusion properties on moisture damage in asphalt mixtures (2015)
Journal Article
Apeagyei, A. K., Grenfell, J. R., & Airey, G. (in press). Influence of aggregate absorption and diffusion properties on moisture damage in asphalt mixtures. Road Materials and Pavement Design, 16(sup1), https://doi.org/10.1080/14680629.2015.1030827

An experimental study was undertaken to characterise moisture sensitivity of asphalt mixtures by comparing certain physico-chemical properties of selected aggregates of different mineralogies to the moisture induced strength degradation of the aggreg... Read More about Influence of aggregate absorption and diffusion properties on moisture damage in asphalt mixtures.

An investigation on using pre-treated tyre rubber as a replacement of synthetic polymers for bitumen modification (2015)
Journal Article
Subhy, A., Lo Presti, D., & Airey, G. (in press). An investigation on using pre-treated tyre rubber as a replacement of synthetic polymers for bitumen modification. Road Materials and Pavement Design, 16, https://doi.org/10.1080/14680629.2015.1030826

Rubberized bitumen obtained through a swelling process, has widely proven to be a successful technology for asphalt pavement applications and a solution to reduce the dismantling of tyre rubber on landfills. However, this technology presents two main... Read More about An investigation on using pre-treated tyre rubber as a replacement of synthetic polymers for bitumen modification.

Binder design of high RAP content hot and warm asphalt mixture wearing courses (2015)
Journal Article
Barco Carrión, A., Lo Presti, D., & Airey, G. (2015). Binder design of high RAP content hot and warm asphalt mixture wearing courses. Road Materials and Pavement Design, 16, 460-474. https://doi.org/10.1080/14680629.2015.1029707

Reclaimed Asphalt Pavement (RAP) has shown great potential for being used in the construction or maintenance of roads. However, RAP is usually downgraded to lower pavement layers and the percentage of RAP used in wearing courses is still moderate (≤3... Read More about Binder design of high RAP content hot and warm asphalt mixture wearing courses.