Abstract
Studying the performance of an asphalt concrete mix generally focuses on parameters such as the volumetrics of an asphalt mix, asphalt binder type, and content. However, the aggregate source and morphology can also significantly contribute to the performance of asphalt mixes. This paper investigates the influence of aggregate shape parameters (roundness, concavity, shape factor, and elongation) and gradation on the performance of low air-void high-modulus asphalt mix or Enrobé à Module Élevé (EME). Two high modulus mixes based on nominal maximum aggregate sizes of 12.5 and 19 mm were developed using two sources of mineral aggregates. The shape parameters of aggregate fractions were determined using an aggregate image analyzer. Thermo-mechanical tests were performed to evaluate performance of the developed mixes. The compactability of EME mixes was assessed using the Superpave Gyratory Compactor (SGC). The rheological properties of the mixes were evaluated by conducting complex modulus test at a range of temperatures (−10 to 54 °C) and loading frequencies (0.1–25 Hz). Furthermore, Hamburg wheel tracking and four-point bending beam fatigue tests were conducted to assess the rutting and fatigue performance of EME mixes, respectively. The aggregate image results indicated a considerable difference in roundness and concavity parameters of the aggregates. It was also concluded that the difference varies by changing the aggregate source and size. In addition, the performance test results showed that changes in the aggregate shape parameters along with the gradation can affect the performance of the mixes.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
Wang, W., Cheng, Y., Tan, G., Tao, J.: Analysis of aggregate morphological characteristics for viscoelastic properties of asphalt mixes using simplex lattice design. Materials 11(10), 1908 (2018)
Naidu, P.G., Adiseshu, S.: Influence of coarse aggregate shape factors on bituminous mixtures. Int. J. Eng. Res. Appl. 1(4), 2013–2024 (2011)
Arasan, S., Yenera, E., Hattatoglu, F., Hinislioglua, S., Akbuluta, S.: Correlation between shape of aggregate and mechanical properties of asphalt concrete digital image processing approach. Road Mater. Pavement Des. 12(2), 239–262 (2011)
Chen, J.S., Chang, M.K., Lin, K.Y.: Influence of coarse aggregate shape on the strength of asphalt concrete mixtures. J. Eastern Asia Soc. Transp. Stud. 6, 1062–1075 (2005)
Liu, Y., Huang, Y., Sun, W., Nair, H., Lane, D.S., Wang, L.: Effect of coarse aggregate morphology on the mechanical properties of stone matrix asphalt. Constr. Build. Mater. 152, 48–56 (2017)
Liu, Y., Gong, F., You, Z., Wang, H.: Aggregate morphological characterization with 3D optical scanner versus x-ray computed tomography. J. Mater. Civ. Eng. 04017248 30(1) (2018)
Julius, J., Komba, K., Anochie-Boateng, J., Steyn, W.M.: Analytical and laser scanning techniques to determine shape properties of aggregates. In: Transportation Research Board of the National Academies, Washington, D.C., pp. 60–71 (2013). https://doi.org/10.3141/2335-07
Sengoz, B., Onsori, A., Topal, A.: Effect of aggregate shape on the surface properties of flexible pavement. KSCE J. Civ. Eng. 18, 1364–1371 (2014)
Baghaee Moghaddam, T., Baaj, H.: The use of compressible packing model and modified asphalt binders in high-modulus asphalt mix design. Road Mater. Pavement Des. (2018). https://doi.org/10.1080/14680629.2018.1536611
Baghaee Moghaddam, T., Baaj, H.: Application of compressible packing model for optimization of asphalt concrete mix design. Constr. Build. Mater. 159, 530–539 (2018)
Tierrie, J., Baaj, H., Darmedru, P.: Modeling the relationship between the shape and flowing characteristics of processed sands. Constr. Build. Mater. 104, 235–246 (2016)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2022 The Author(s), under exclusive license to Springer Nature Switzerland AG
About this paper
Cite this paper
Moghaddam, T.B., Baaj, H. (2022). Effects of Aggregate Shape Parameters and Gradation on High-Modulus Asphalt Mix Performance. In: Di Benedetto, H., Baaj, H., Chailleux, E., Tebaldi, G., Sauzéat, C., Mangiafico, S. (eds) Proceedings of the RILEM International Symposium on Bituminous Materials. ISBM 2020. RILEM Bookseries, vol 27. Springer, Cham. https://doi.org/10.1007/978-3-030-46455-4_82
Download citation
DOI: https://doi.org/10.1007/978-3-030-46455-4_82
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-46454-7
Online ISBN: 978-3-030-46455-4
eBook Packages: EngineeringEngineering (R0)