Searched for: author:"Varveri, A."
(1 - 15 of 15)
document
Tarsi, G. (author), Sangiorgi, C. (author), Varveri, A. (author), Oliviero Rossi, C. (author)
Environmental protection is also pursued by promoting the saving of oil reserves and the proper management of waste through a circular economy. Following this objective, the present study encourages the use of recycled and by-product materials for the production of bituminous binders. The powdered rubber (R) from end-of-life tyres and the re...
book chapter 2020
document
Pipintakos, Georgios (author), Vincent Ching, H. Y. (author), Soenen, Hilde (author), Sjövall, Peter (author), Mühlich, Uwe (author), Van Doorslaer, Sabine (author), Varveri, A. (author), Van den bergh, Wim (author), Lu, Xiaohu (author)
Oxidative ageing in bituminous materials is considered one of the most important factors for distress types in road applications. This paper aims to offer insights into the validity of commonly held beliefs regarding the oxidation phases of ageing in bitumen, the fast- and the slow-rate phase, and explore the main oxidation products formed...
journal article 2020
document
Jing, R. (author), Varveri, A. (author), Liu, X. (author), Scarpas, Athanasios (author), Erkens, S. (author)
Ageing has a significant impact on the chemical and mechanical properties of bituminous materials. In this study, Fourier Transform Infrared (FTIR) spectrometer and Dynamic Shear Rheometer (DSR) tests were utilised to investigate the effect of ageing on the chemical and rheological properties of bitumen. Bitumen films with thickness of 2 mm...
journal article 2019
document
Jing, R. (author), Varveri, A. (author), Liu, X. (author), Scarpas, Athanasios (author), Erkens, S. (author)
Bitumen ageing has a significant impact on the mechanical performance of asphalt concrete. This study utilises dynamic mechanical tests (frequency sweep, fatigue, and relaxation) to investigate the effect of ageing on the viscoelastic characteristics of bitumen. As ageing progressed, a shift of the Black diagrams curves towards lower phase...
journal article 2019
document
Tarsi, G. (author), Varveri, A. (author), Lantieri, Claudio (author), Scarpas, Athanasios (author), Sangiorgi, Cesare (author)
Bitumen undergoes ageing, which leads to changes in its chemical and rheological properties, causing it to become harder and more brittle with time. This study aims to compare the effects of different laboratory ageing methods on the chemistry and rheology of three bitumen types: a Pen 40=60, a Pen 70=100, and a polymer-modified bitumen (PmB)...
journal article 2018
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Jing, R. (author), Varveri, A. (author), Liu, X. (author), Scarpas, A. (author), Erkens, S.M.J.G. (author)
The ageing of bitumen has a significant impact on the mechanical behavior of asphalt concrete. In this study, Dynamic Shear Rheometer (DSR) tests were utilized to investigate the effect of ageing on the relaxation properties of bituminous materials. PEN 70/100 bitumen films with thickness of 2 mm were exposed to laboratory ageing at various...
conference paper 2018
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Jing, R. (author), Varveri, A. (author), Liu, X. (author), Scarpas, A. (author), Erkens, S.M.J.G. (author)
Ageing of bitumen is a complex process. It is accompanied by major chemical and mechanical changes. In this study, Fourier Transform Infrared (FTIR) spectrometer and Dynamic Shear Rheometer (DSR) tests were utilized to investigate the effect of ageing on the chemical and mechanical properties of bituminous materials. Bitumen films with thickness...
conference paper 2018
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Jing, R. (author), Liu, X. (author), Varveri, A. (author), Scarpas, Athanasios (author), Erkens, S. (author)
Asphalt mortar is a mixture of bitumen, filler, and sand. Mortar plays an important role in asphalt mixtures as it serves as the adhesive between the coarser aggregates. Due to the effect of bitumen ageing, the chemical and mechanical properties of asphalt mortar evolve with time. The mortar becomes more brittle and prone to cracking, thus...
journal article 2018
document
Varveri, A. (author)
A well-functioning, long-lasting and safe highway infrastructure network ensures the mobility of people and facilitates the transport of goods, promoting thus environmental, economic, and social sustainability. The development of sustainable highway infrastructure requires, among other activities, the construction of pavement systems with...
doctoral thesis 2017
document
Varveri, A. (author), Avgerinopoulos, S. (author), Scarpas, A. (author)
This paper investigates the moisture susceptibility of European asphalt mixtures (SMA) containing reclaimed asphalt (RA) and warm mix (WMA) additives. Test sections of a typical SMA mixture have been laid, from which cylindrical samples were cored and utilized for laboratory testing. Four variants of the SMA mixture were prepared; a control HMA...
conference paper 2016
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Nicholls, C. (author), Wayman, M. (author), Mollenhauer, K. (author), McNally, C. (author), Tabakovic, A. (author), Varveri, A. (author), Cassidy, S. (author), Shahmohammadi, R. (author), Taylor, R. (author)
The use of reclaimed asphalt, secondary component materials and/or additives and lower temperature asphalt are being increasingly used in order to improve the sustainability of asphalt production. The use of reclaimed asphalt reduces the need for virgin materials whilst lower temperature asphalts have reduced CO2 emissions, increased...
conference paper 2015
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Nicholls, C. (author), Wayman, M. (author), Mollenhauer, K. (author), McNally, C. (author), Tabakovic, A. (author), Varveri, A. (author), Cassidy, S. (author), Shahmohammadi, R. (author), Gilbert, K. (author)
There is a need for a method for assessing the results from changes in the potential durability of road materials due to the inclusion of reclaimed and secondary component materials in the manufacture of new road materials. Such changes will have an effect on the cost of the construction maintenance, both financially to the client and...
conference paper 2014
document
Nicholls, C. (author), Wayman, M. (author), Mollenhauer, K. (author), McNally, C. (author), Tabakovic, A. (author), Varveri, A. (author), Cassidy, S. (author), Shahmohammadi, R. (author), Gilbert, K. (author)
There is a need for a method for assessing the results from changes in the potential durability of road materials due to the inclusion of reclaimed and secondary component materials in the manufacture of new road materials. Such changes will have an effect on the cost of the construction maintenance, both financially to the client and...
conference paper 2014
document
Varveri, A. (author), Avgerinopoulos, S. (author), Kasbergen, C. (author), Scarpas, T. (author), Collop, A. (author)
Because of the difficulties associated with the generation of finite element meshes based on X-ray computed tomography scans and with the extraordinary computational demands in performing three-dimensional (3-D) finite element analyses, past modeling efforts have focused primarily on two-dimensional representations of asphalt mixtures and have...
journal article 2014
document
Varveri, A. (author), Scarpas, A. (author), Collop, A. (author), Erkens, S.M.J.G. (author)
In this paper, a new moisture conditioning protocol which attempts to distinguish the contributions of long- and short-term moisture damage, i.e. moisture diffusion and cyclic pore pressure generation, in asphalt mixtures is presented. The capability of the proposed protocol to rank various asphalt mixtures of known field performance for their...
conference paper 2014
Searched for: author:"Varveri, A."
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