All Outputs (49)

Numerical and experimental predictions of texture-related influences on rolling resistance (2018)
Journal Article
Mansura, D. A., Thom, N. H., & Beckedahl, H. J. (2018). Numerical and experimental predictions of texture-related influences on rolling resistance. Transportation Research Record, doi:10.1177/0361198118776114

To overcome rolling resistance (RR) a typical vehicle on average consumes 4152 MJ/119 L of fuel annually as a result of both vehicle and pavement factors. A slight improvement in surface texture arrangement may therefore decrease fuel consumption b... Read More about Numerical and experimental predictions of texture-related influences on rolling resistance.

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.

Damage propagation rate and mechanical properties of recycled steel fiber-reinforced and cement-bound granular materials used in pavement structure (2018)
Journal Article
Hilal Farhan, A., Dawson, A., & Thom, N. (2018). Damage propagation rate and mechanical properties of recycled steel fiber-reinforced and cement-bound granular materials used in pavement structure. Construction and Building Materials, 172, 112-124. https://doi.org/10.1016/j.conbuildmat.2018.03.239

Cement-bound granular mixtures (CBGMs) represent an attractive option to increase load-carrying capacity and sustainability in highway construction. However, reflection cracking of overlying pavement layers due to the low tensile strength of CBGMs re... Read More about Damage propagation rate and mechanical properties of recycled steel fiber-reinforced and cement-bound granular materials used in pavement structure.

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.

Novel performance-based technique for predicting maintenance strategy of bitumen stabilised ballast (2017)
Journal Article
D'Angelo, G., Bressi, S., Giunta, M., Lo Presti, D., & Thom, N. (2018). Novel performance-based technique for predicting maintenance strategy of bitumen stabilised ballast. Construction and Building Materials, 161, 1-8. doi:10.1016/j.conbuildmat.2017.11.115

Despite being the most used worldwide, railway ballasted tracks presents high maintenance cost related to ballast settlement and particle degradation. With the aim of reducing life cycle costs, bitumen stabilised ballast (BSB) has been recently propo... Read More about Novel performance-based technique for predicting maintenance strategy of bitumen stabilised ballast.

Microstructural characteristics, porosity and strength development in ceramic-laterized concrete (2017)
Journal Article
Awoyera, P., Akinmusuru, J., Dawson, A., Ndambuki, J., & Thom, N. (2018). Microstructural characteristics, porosity and strength development in ceramic-laterized concrete. Cement and Concrete Composites, 86, https://doi.org/10.1016/j.cemconcomp.2017.11.017

Interfacial bonding between constituent materials and pore sizes in a concrete matrix are major contributors to enhancing the strength of concrete. In a bid to examine how this phenomenon affects a laterized concrete, this study explored the relation... Read More about Microstructural characteristics, porosity and strength development in ceramic-laterized concrete.

Evaluation of mixing temperature impact on warm mix asphalt performance (2017)
Conference Proceeding
Grenfell, J., Thom, N., & Abed, A. (2017). Evaluation of mixing temperature impact on warm mix asphalt performance. In Bearing Capacity of Roads, Railways and Airfields: Proceedings of the 10th International Conference on the Bearing Capacity of Roads, Railways and Airfields (BCRRA 2017), June 28-30, 2017, Athens, Greece (251-258). https://doi.org/10.1201/9781315100333-33

This study presents a new approach for determining an optimum mixing temperature for a chemical and an organic WMA additive based on correlating the mixing temperatures with performance measures including the Indirect Tensile Stiffness Modulus (ITSM)... Read More about Evaluation of mixing temperature impact on warm mix asphalt performance.

Suitability of mortars produced using laterite and ceramic wastes: mechanical and microscale analysis (2017)
Journal Article
Awoyera, P., Dawson, A., Thom, N., & Akinmusuru, J. (2017). Suitability of mortars produced using laterite and ceramic wastes: mechanical and microscale analysis. Construction and Building Materials, 148, https://doi.org/10.1016/j.conbuildmat.2017.05.031

Using industrial wastes and local materials as artificial aggregates in cement based materials remains a relevant measure for conservation of natural sources. In this study, novel cementitious mixes containing pulverized ceramic blended cement, ceram... Read More about Suitability of mortars produced using laterite and ceramic wastes: mechanical and microscale analysis.

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.

A novel multi-scale numerical model for prediction of texture-related impacts on fuel consumption (2017)
Journal Article
Mansura, D., Thom, N., & Beckedahl, H. (2017). A novel multi-scale numerical model for prediction of texture-related impacts on fuel consumption. Tire Science and Technology, 45(1), https://doi.org/10.2346/tire.17.450104

It is estimated that to overcome rolling resistance (RR) a typical vehicle, on average, consumes 4152 MJ/119 L of fuel annually, depending not only on vehicle-related factors but also on pavement-related factors. A slight improvement in surface prope... Read More about A novel multi-scale numerical model for prediction of texture-related impacts on fuel consumption.

Failure mechanism of foamed concrete made with/without additives and lightweight aggregate (2016)
Journal Article
Hilal, A. A., Thom, N., & Dawson, A. (2016). Failure mechanism of foamed concrete made with/without additives and lightweight aggregate. Journal of Advanced Concrete Technology, 14(9), https://doi.org/10.3151/jact.14.511

It has been reported that owing to a densification of the internal structure of concrete, adding mineral admixtures leads to a more brittle behaviour. Therefore, with the intention of modifying (increasing the strength of) foamed concrete to make it... Read More about Failure mechanism of foamed concrete made with/without additives and lightweight aggregate.

Bitumen stabilized ballast: a potential solution for railway track-bed (2016)
Journal Article
D'Angelo, G., Thom, N., & Lo Presti, D. (2016). Bitumen stabilized ballast: a potential solution for railway track-bed. Construction and Building Materials, 124, 118-126. https://doi.org/10.1016/j.conbuildmat.2016.07.067

Railway ballast degradation under dynamic loads progressively leads to loss of mechanical performance and geometry of the track, so that maintenance interventions are frequently needed. In order to systematically avoid this issue, recently solutions... Read More about Bitumen stabilized ballast: a potential solution for railway track-bed.

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.

Examining the effects of contributory factors on curing process of cold bitumen emulsion mixtures (2016)
Conference Proceeding
Nassar, A. I., Thom, N., & Parry, T. (2016). Examining the effects of contributory factors on curing process of cold bitumen emulsion mixtures. In Functional pavement design: proceedings of the 4th Chinese-European Workshop on Functional Pavement Design (4th CEW 2016, Delft, The Netherlands, 29 June - 1 July 2016)

Curing of Cold Bitumen Emulsion Mixtures (CBEMs) is influenced by different factors such as curing temperature, curing time, humidity and presence of cement. In this study, the influence of these contributory factors on CBEMs has been evaluated in te... Read More about Examining the effects of contributory factors on curing process of cold bitumen emulsion mixtures.

Characterisation of high-performance cold bitumen emulsion mixtures for surface courses (2016)
Journal Article
Nassar, A. I., Mohammed, M. K., Thom, N., & Parry, T. (in press). Characterisation of high-performance cold bitumen emulsion mixtures for surface courses. International Journal of Pavement Engineering, https://doi.org/10.1080/10298436.2016.1176165

Cold bitumen emulsion mixture (CBEM) is not yet widely used as a surface course around the world. In this study, 0/14-mm-size dense-graded surface course CBEMs have been investigated. The mechanical performance was evaluated in terms of stiffness mod... Read More about Characterisation of high-performance cold bitumen emulsion mixtures for surface courses.

Mechanical, durability and microstructure properties of cold asphalt emulsion mixtures with different types of filler (2016)
Journal Article
Nassar, A. I., Mohammed, M. K., Thom, N., & Parry, T. (2016). Mechanical, durability and microstructure properties of cold asphalt emulsion mixtures with different types of filler. Construction and Building Materials, 114, https://doi.org/10.1016/j.conbuildmat.2016.03.112

The primary aim of this study is to investigate the enhancement of Cold Asphalt Emulsion Mixtures (CAEMs) using binary and ternary blended fillers (BBF and TBF), including an in-depth assessment of the microstructure. Ordinary Portland cement (OPC),... Read More about Mechanical, durability and microstructure properties of cold asphalt emulsion mixtures with different types of filler.

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.

Optimizing the mix design of cold bitumen emulsion mixtures using response surface methodology (2015)
Journal Article
Nassar, A. I., Thom, N., & Parry, T. (2016). Optimizing the mix design of cold bitumen emulsion mixtures using response surface methodology. Construction and Building Materials, 104, https://doi.org/10.1016/j.conbuildmat.2015.12.073

Cold mix asphalt (CMA) has been increasingly recognized as an important alternative worldwide. One of the common types of CMA is cold bitumen emulsion mixture (CBEM). In the present study, the optimization of CBEM has been investigated, to determine... Read More about Optimizing the mix design of cold bitumen emulsion mixtures using response surface methodology.

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.

The use of additives to enhance properties of pre-formed foamed concrete (2015)
Journal Article
Hilal, A. A., Thom, N., & Dawson, A. (2015). The use of additives to enhance properties of pre-formed foamed concrete. International Journal of Engineering and Technology, 7(4), https://doi.org/10.7763/IJET.2015.V7.806

This paper describes an experimental study of an enhancement of pre-formed foamed concrete, 1300-1900 kg/m3, by utilising two types of additives, silica fume and fly ash, to partially replace Portland cement and fine sand. It focuses on consistency,... Read More about The use of additives to enhance properties of pre-formed foamed concrete.