All Outputs (38)

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.

Evaluation of mixing temperature impact on warm mix asphalt performance (2017)
Presentation / Conference Contribution
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.

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.

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)
Presentation / Conference Contribution
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.

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.

On void structure and strength of foamed concrete made without/with additives (2015)
Journal Article
Hilal, A. A., Thom, N., & Dawson, A. (2015). On void structure and strength of foamed concrete made without/with additives. Construction and Building Materials, 85, https://doi.org/10.1016/j.conbuildmat.2015.03.093

A study has been undertaken to investigate the effect of different additives on the strength foamed concrete by characterising air-void size and shape parameters and identifying the influence of these parameters and changes to cement paste microstruc... Read More about On void structure and strength of foamed concrete made without/with additives.

Stiffness of cold asphalt mixtures with recycled aggregates from construction and demolition waste (2015)
Journal Article
Gómez-Meijide, B., Pérez, I., Airey, G., & Thom, N. (2015). Stiffness of cold asphalt mixtures with recycled aggregates from construction and demolition waste. Construction and Building Materials, 77, 168-178. https://doi.org/10.1016/j.conbuildmat.2014.12.045

The stiffness of cold asphalt mixtures (CAM) with 100% recycled construction and demolition waste aggregates (CDWA) was studied from three different points of view: the indirect tensile stiffness modulus (ITSM), the dynamic modulus at different tempe... Read More about Stiffness of cold asphalt mixtures with recycled aggregates from construction and demolition waste.

Pore structure and permeation characteristics of foamed concrete (2014)
Journal Article
Hilal, A. A., Thom, N., & Dawson, A. (2014). Pore structure and permeation characteristics of foamed concrete. Journal of Advanced Concrete Technology, 12(12), https://doi.org/10.3151/jact.12.535

A study has been undertaken to investigate the pore structure characteristics, porosity and critical pore diameter of preformed foamed concrete with a density between 1300 and 1900 kg/m3, and its effect on the permeation characteristics, water absorp... Read More about Pore structure and permeation characteristics of foamed concrete.

On entrained pore size distribution of foamed concrete (2014)
Journal Article
Hilal, A. A., Thom, N., & Dawson, A. (2015). On entrained pore size distribution of foamed concrete. Construction and Building Materials, 75, https://doi.org/10.1016/j.conbuildmat.2014.09.117

The pore structure of foamed concrete is a significant characteristic since it affects properties such as strength and durability. To investigate these properties, the determination of total air voids content is not sufficient as the shape, size and... Read More about On entrained pore size distribution of foamed concrete.

A study into the use of crumb rubber in railway ballast (2014)
Journal Article
Sol-Sánchez, M., Thom, N., Moreno-Navarro, F., Rubio-Gámeza, M., & Airey, G. (2015). A study into the use of crumb rubber in railway ballast. Construction and Building Materials, 75, 19-24. https://doi.org/10.1016/j.conbuildmat.2014.10.045

Ballasted track is the most common form of construction used in railway transportation due to a number of benefits in comparison with other solutions such as slab track. However, the degradation of the ballast particles and the layer settlement lead... Read More about A study into the use of crumb rubber in railway ballast.

Investigating geogrid-reinforced ballast: Experimental pull-out tests and discrete element modelling (2014)
Journal Article
Chen, C., McDowell, G., & Thom, N. (2014). Investigating geogrid-reinforced ballast: Experimental pull-out tests and discrete element modelling. Soils and Foundations, 54(1), 1-11. https://doi.org/10.1016/j.sandf.2013.12.001

This paper presents an evaluation of the interlocking behaviour of geogrid-reinforced railway ballast. Experimental large box pull-out tests were conducted to examine the interaction between ballast and a biaxial geogrid. The discrete element method... Read More about Investigating geogrid-reinforced ballast: Experimental pull-out tests and discrete element modelling.