All Outputs (118)

Enhancing fatigue resistance and low-temperature performance of asphalt pavements using antioxidant additives (2025)
Journal Article
Hu, Y., Cheng, X., Sreeram, A., Si, W., Li, B., Pipintakos, G., & Airey, G. D. (2025). Enhancing fatigue resistance and low-temperature performance of asphalt pavements using antioxidant additives. Materials and Structures, 58, Article 46. https://doi.org/10.1617/s11527-025-02574-4

Ageing results in significant performance deterioration of asphalt, especially in relation to its fatigue and low-temperature performance. This performance deterioration can theoretically be lowered by incorporating antioxidants in asphalt mixtures.... Read More about Enhancing fatigue resistance and low-temperature performance of asphalt pavements using antioxidant additives.

Physicochemical compatibility assessment of bio-additives and bitumen using solubility science-based approaches (2025)
Journal Article
Hu, Y., Sreeram, A., Al-Tabbaa, A., & Airey, G. D. (2025). Physicochemical compatibility assessment of bio-additives and bitumen using solubility science-based approaches. Fuel, 387, Article 134361. https://doi.org/10.1016/j.fuel.2025.134361

Increasing environmental concerns necessitate the urgent investigation of alternative, sustainable resources as replacement for fossil fuel-derived bitumen; the primary material used for road construction. One of the promising approaches is the use o... Read More about Physicochemical compatibility assessment of bio-additives and bitumen using solubility science-based approaches.

A novel fatigue test method for bitumen-stone combinations under cyclic tension-compression loading (2024)
Journal Article
Zhou, L., Airey, G., Zhang, Y., Huang, W., & Wang, C. (2025). A novel fatigue test method for bitumen-stone combinations under cyclic tension-compression loading. Materials and Design, 249, Article 113577. https://doi.org/10.1016/j.matdes.2024.113577

Asphalt pavement distress is closely linked to the fatigue performance of asphalt mixtures. Traditional fatigue tests like the dynamic shear rheometer (DSR) cannot assess failure between bitumen and stone, while methods like the four-point bending (4... Read More about A novel fatigue test method for bitumen-stone combinations under cyclic tension-compression loading.

Fracture characteristics of SMA mixtures with hydrated lime through the semi-circular bending approach (2024)
Journal Article
Carvajal-Muñoz, J. S., Airey, G., Sanjuan-Benavides, A., Perez-Miranda, M. A., & Gómez-Osorio, F. A. (2024). Fracture characteristics of SMA mixtures with hydrated lime through the semi-circular bending approach. Construction and Building Materials, 449, Article 138353. https://doi.org/10.1016/j.conbuildmat.2024.138353

Stone Mastic Asphalt (SMA) is a composite mixture made up of high-quality crushed stone, fine aggregates, an asphalt binder, and a significant percentage of mineral filler in contrast to conventional mixtures. Renowned for its durability and rolling... Read More about Fracture characteristics of SMA mixtures with hydrated lime through the semi-circular bending approach.

Temporal Homogenization Modeling of Viscoelastic Asphalt Concretes and Pavement Structures under Large Numbers of Load Cycles (2024)
Journal Article
Zhang, H., Airey, G., & Zhang, Y. (2024). Temporal Homogenization Modeling of Viscoelastic Asphalt Concretes and Pavement Structures under Large Numbers of Load Cycles. Journal of Engineering Mechanics, 150(11), https://doi.org/10.1061/jenmdt.emeng-7697

This paper aims to introduce a highly efficient computational model compared to the current cycle-by-cycle simulation strategy to compute the viscoelastic responses of asphalt concretes and pavement structures under large numbers of load cycles. An e... Read More about Temporal Homogenization Modeling of Viscoelastic Asphalt Concretes and Pavement Structures under Large Numbers of Load Cycles.

Measurement on the fatigue-healing performance of SARAs fractions in bitumen and its characterization by molecular simulations (2024)
Journal Article
Xu, H., Wu, S., Chen, A., Zou, Y., Airey, G., Wang, H., & Zhang, H. (2024). Measurement on the fatigue-healing performance of SARAs fractions in bitumen and its characterization by molecular simulations. Journal of Molecular Liquids, 412, Article 125850. https://doi.org/10.1016/j.molliq.2024.125850

The objective of this research was to investigate the healing characteristics of bitumen through the assessment of fatigue-healing performance of SARAs fractions and its characterization at the molecular level with SARAs fractions as the intermediate... Read More about Measurement on the fatigue-healing performance of SARAs fractions in bitumen and its characterization by molecular simulations.

Performance-Related Characterization of SBS-Modified Bitumen-Filler Mastics Incorporating Hydrated Lime (2024)
Presentation / Conference Contribution
Carvajal-Muñoz, J. S., Airey, G., Vergara, I., Sanjuan, A., Pérez, M., Contreras, M., Hernández, R., Cepeda, J., Rodríguez, W., Gómez, F., & Rodriguez, S. (2024, July). Performance-Related Characterization of SBS-Modified Bitumen-Filler Mastics Incorporating Hydrated Lime. Presented at 10th International Conference on Maintenance and Rehabilitation of Pavements (MAIREPAV10), Guimarães, Portugal

Nowadays, road maintenance and rehabilitation strategies represent important budget investments worldwide as a result of the need for suitable pavement structures. The selection of alternative materials for more efficient and durable solutions is the... Read More about Performance-Related Characterization of SBS-Modified Bitumen-Filler Mastics Incorporating Hydrated Lime.

Assessing correlations between two linear amplitude sweep (LAS) standards for evaluating the fatigue properties of aged bitumen (2024)
Journal Article
Hu, Y., Sreeram, A., Bahia, H. U., Airey, G. D., Si, W., Li, B., & Xu, X. (2024). Assessing correlations between two linear amplitude sweep (LAS) standards for evaluating the fatigue properties of aged bitumen. International Journal of Pavement Engineering, 25(1), Article 2375419. https://doi.org/10.1080/10298436.2024.2375419

Linear amplitude sweep (LAS) is an accelerated and well-established testing method to evaluate bitumen fatigue. However, there are different versions of LAS procedures employed. Significant differences in loading modes, damage failure criteria and ca... Read More about Assessing correlations between two linear amplitude sweep (LAS) standards for evaluating the fatigue properties of aged bitumen.

Recovering the properties of aged bitumen using bio-rejuvenators derived from municipal wastes (2024)
Journal Article
Hu, Y., Omairey, E., Hughes, D., Bailey, H., Watkins, M., Twitchen, J., Airey, G. D., & Sreeram, A. (2024). Recovering the properties of aged bitumen using bio-rejuvenators derived from municipal wastes. Construction and Building Materials, 438, Article 137268. https://doi.org/10.1016/j.conbuildmat.2024.137268

Ageing of bitumen leads to significant performance deterioration of asphalt pavements and leads to material properties that are not conducive to recycling. Aiming to maximise the reusability of bitumen, this study investigated the feasibility of reju... Read More about Recovering the properties of aged bitumen using bio-rejuvenators derived from municipal wastes.

Characterisation of bitumen through multiple ageing-rejuvenation cycles (2024)
Journal Article
Hu, Y., Allanson, M., Sreeram, A., Ryan, J., Wang, H., Zhou, L., Hofko, B., & Airey, G. D. (2024). Characterisation of bitumen through multiple ageing-rejuvenation cycles. International Journal of Pavement Engineering, 25(1), Article 2365350. https://doi.org/10.1080/10298436.2024.2365350

The multiple recycling of bitumen offers the possibility of reusing it for repeated lifecycles and achieve a higher degree of circularity of materials used in pavement construction. Aiming to identify the prospect, this study aged bitumen in a labora... Read More about Characterisation of bitumen through multiple ageing-rejuvenation cycles.

Use of Hansen Solubility Parameters (HSP) in the selection of highly effective rejuvenators for aged bitumen (2024)
Journal Article
Hu, Y., Sreeram, A., Xia, W., Wang, H., Zhou, L., Si, W., & Airey, G. D. (2024). Use of Hansen Solubility Parameters (HSP) in the selection of highly effective rejuvenators for aged bitumen. Road Materials and Pavement Design, https://doi.org/10.1080/14680629.2024.2357684

While there is considerable research regarding the recycling and reuse of aged bitumen in terms of the evaluation of rheological properties, there is not much fundamental understanding regarding the underlying mechanisms of the rejuvenation process.... Read More about Use of Hansen Solubility Parameters (HSP) in the selection of highly effective rejuvenators for aged bitumen.

Investigation of the bonding properties of bitumen using a novel modified binder bond strength test (2024)
Journal Article
Zhou, L., Airey, G., Zhang, Y., Wang, C., & Zhong, H. (2024). Investigation of the bonding properties of bitumen using a novel modified binder bond strength test. Construction and Building Materials, 434, Article 136784. https://doi.org/10.1016/j.conbuildmat.2024.136784

The binder bond strength (BBS) test can directly quantify the bonding of bitumen-stone joints. However, the index "bond strength" used in this method cannot provide a clear distinction when evaluating the performance of various bitumen, and some resu... Read More about Investigation of the bonding properties of bitumen using a novel modified binder bond strength test.

Optimising the dosage of bio-rejuvenators in asphalt recycling: A rejuvenation index based approach (2024)
Journal Article
Hu, Y., Ryan, J., Sreeram, A., Allanson, M., Pasandín, A. R., Zhou, L., Singh, B., Wang, H., & Airey, G. D. (2024). Optimising the dosage of bio-rejuvenators in asphalt recycling: A rejuvenation index based approach. Construction and Building Materials, 433, Article 136761. https://doi.org/10.1016/j.conbuildmat.2024.136761

While significant research efforts have been devoted to the rejuvenation of aged bitumen using bio-rejuvenators, a universally recognised approach for dosage optimisation is still yet to be established. Aiming to develop standardised methods to deter... Read More about Optimising the dosage of bio-rejuvenators in asphalt recycling: A rejuvenation index based approach.

Comparative analysis of time sweep testing evaluation methods for the fatigue characterisation of aged bitumen (2024)
Journal Article
Hu, Y., Sreeram, A., Airey, G., Li, B., Si, W., & Wang, H. (2024). Comparative analysis of time sweep testing evaluation methods for the fatigue characterisation of aged bitumen. Construction and Building Materials, 432, Article 136698. https://doi.org/10.1016/j.conbuildmat.2024.136698

Ageing of bitumen changes its stiffness related properties and is thought to have a considerable impact on its fatigue performance. Time sweep tests are a commonly used methodology to evaluate the fatigue performance of bitumen over the course of its... Read More about Comparative analysis of time sweep testing evaluation methods for the fatigue characterisation of aged bitumen.

Examining the efficacy of promising antioxidants to mitigate asphalt binder oxidation: insights from a worldwide interlaboratory investigation (2024)
Journal Article
Adwani, D., Pipintakos, G., Mirwald, J., Wang, Y., Hajj, R., Guo, M., Liang, M., Jing, R., Varveri, A., Zhang, Y., Pei, K., Xu, X., Leng, Z., Li, D., Villamil, W., Caro, S., Chailleux, E., Cantot, J., Weigel, S., Škulteckė, J., …Bhasin, A. (2024). Examining the efficacy of promising antioxidants to mitigate asphalt binder oxidation: insights from a worldwide interlaboratory investigation. International Journal of Pavement Engineering, 25(1), Article 2332363. https://doi.org/10.1080/10298436.2024.2332363

Oxidative aging induces significant stiffening of asphalt binders that leads to a pronounced reduction in the overall durability of asphalt pavements. The strategic implementation of antioxidant additives provides a potential solution to alleviate th... Read More about Examining the efficacy of promising antioxidants to mitigate asphalt binder oxidation: insights from a worldwide interlaboratory investigation.

A molecular dynamics analysis of the influence of iron corrosion products on the healing process of bitumen (2024)
Journal Article
Xu, H., Zou, Y., Airey, G., Wang, H., Zhang, H., Wu, S., & Chen, A. (2024). A molecular dynamics analysis of the influence of iron corrosion products on the healing process of bitumen. Construction and Building Materials, 421, Article 135662. https://doi.org/10.1016/j.conbuildmat.2024.135662

Corrosion of iron materials in the asphalt concrete pavement occurs commonly when the bitumen film peels off, and the generation of corrosion products would affect the healing performance of bitumen. To identify the affection, this research focuses o... Read More about A molecular dynamics analysis of the influence of iron corrosion products on the healing process of bitumen.

Interfacial characteristics between bitumen and corrosion products on steel slag surface from molecular scale (2024)
Journal Article
Xu, H., Zou, Y., Airey, G., Wang, H., Zhang, H., Wu, S., Chen, A., Xie, J., & Liang, Y. (2024). Interfacial characteristics between bitumen and corrosion products on steel slag surface from molecular scale. Construction and Building Materials, 417, Article 135324. https://doi.org/10.1016/j.conbuildmat.2024.135324

Corrosion commonly happened on the surface of steel slag during the weathering and accumulation process, whose products would form weak points and affect the interface between bitumen and steel slag. To clear its characteristics in the atomic scales,... Read More about Interfacial characteristics between bitumen and corrosion products on steel slag surface from molecular scale.

Wetting of bio-rejuvenator nanodroplets on bitumen: A molecular dynamics investigation (2024)
Journal Article
Xu, H., Zou, Y., Airey, G., Wang, H., Zhang, H., Wu, S., & Chen, A. (2024). Wetting of bio-rejuvenator nanodroplets on bitumen: A molecular dynamics investigation. Journal of Cleaner Production, 444, Article 141140. https://doi.org/10.1016/j.jclepro.2024.141140

Wetting is the first step during the mix process between rejuvenator and bitumen, which is important for mix efficiency and performance recovery. The wetting of bio-rejuvenator nanodroplets on bitumen was investigated by molecular dynamics (MD) simul... Read More about Wetting of bio-rejuvenator nanodroplets on bitumen: A molecular dynamics investigation.

Guidelines for the implementation of SMARTI: Sustainable Multifunctional Automated Resilient Transport Infrastructure (2023)
Presentation / Conference Contribution
Lo Presti, D., Hautiere, N., Hornych, P., Nkwanga, H., Mignini, C., McLoughlin, A., Di Mino, G., Airey, G., Chailleux, E., del Rubio Gámez, M. C., Pouget, S., Audley, M., Levenberg, E., & Doherty, P. (2022, November). Guidelines for the implementation of SMARTI: Sustainable Multifunctional Automated Resilient Transport Infrastructure. Presented at TRA Lisbon 2022 Conference Proceedings Transport Research Arena (TRA Lisbon 2022), Lisboa, Portugal

The World's transport infrastructures (TI) network is facing fast changes due to population growth, mobility, business trades and globalization. More challenges are coming from unforeseen natural and human-induced hazards, including climate change's... Read More about Guidelines for the implementation of SMARTI: Sustainable Multifunctional Automated Resilient Transport Infrastructure.

Review of methodology for life cycle assessment and life cycle cost analysis of asphalt pavements (2023)
Journal Article
Suwarto, F., Parry, T., & Airey, G. (2023). Review of methodology for life cycle assessment and life cycle cost analysis of asphalt pavements. Road Materials and Pavement Design, https://doi.org/10.1080/14680629.2023.2278149

Different approaches continue to be used to evaluate the environmental and financial impactsof road pavements throughout their life cycle. This paper aims to provide a methodological review of published studies of asphalt pavement Life Cycle Assessme... Read More about Review of methodology for life cycle assessment and life cycle cost analysis of asphalt pavements.