Effects of Preparation Conditions on the Properties of Crumb Rubber Modified Binder

Authors: Baha Vural Kök, Mehmet Yilmaz, Mustafa Akpolat, Cihat Sav

Abstract:

Various types of additives are used frequently in order to improve the rheological and mechanical properties of bituminous mixtures. Small devices instead of full scale machines are used for bitumen modification in the laboratory. These laboratory scale devices vary in terms of their properties such as mixing rate, mixing blade and the amount of binder. In this study, the effect of mixing rate and time during the bitumen modification processes on conventional and rheological properties of pure and crumb rubber modified binder were investigated. Penetration, softening point, rotational viscosity (RV) and dynamic shear rheometer (DSR) tests were applied to pure and CR modified bitumen. It was concluded that the penetration and softening point test did not show the efficiency of CR obtained by different mixing conditions. Besides, oxidation that occurred during the preparation processes plays a great part in the improvement effects of the modified binder.

Keywords: Bitumen, crumb rubber, modification, rheological properties.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1316107

References:

[1] M. D. I. Domingos, A. L. Faxina, L. L. B. Bernucci, “Characterization of the rutting potential of modified asphalt binders and its correlation with the mixture’s rut resistance” Constr Build Mater, vol.144, 30 July 2017, pp. 207-213.
[2] X. Zhao, S. Wang, Q. Wang, H. Yao, “Rheological and structural evolution of SBS modified asphalts under natural weathering”, Fuel, vol. 184, 15 November 2016, pp. 242-24.
[3] M. Jasso, R. Hampl, O. Vacin, D. Bakos, J. Stastna, L. Zanzotto, “Rheology of conventional asphalt modified with SBS, Elvaloy and polyphosphoric acid” Fuel Process Technol, vol. 140, December 2015, pp. 172-179.
[4] J. Zhu, B. Birgisson, N. Kringos, “Polymer modification of bitumen: Advances and challenges” Eur Polym J, vol. 54, May 2014, pp. 18-38.
[5] M. O. Hamzah, A. A. Mohamed, H. Ismail, “Laboratory investıgatıon of the propertİes of a newly developed crumb rubber modifıed (Crı1) asphalt mixtures” EJER, 11(2), 2006, pp. 67-72.
[6] F. J. Navarro, P. Partal, F. Martı´nez-Boza, C. Gallegos, “Thermo-rheological behaviour and storage stability of ground tire rubber-modified bitumens”, Fuel, vol. 83, 2004, pp.2041–2049.
[7] S. A. D. Neto, M. M. Farias, J. C. Pais, P. Pereira, “Influence of crumb rubber gradation on asphalt-rubber properties”, Asphalt Rubber Conference, California, USA, 2006, pp. 679-692.
[8] B.V. Kök, M. Yilmaz, A. Geçkil, “Evaluation of low-temperature and elastic properties of crumb rubber– and SBS-modified bitumen and mixtures” J. Mater. Civ. Eng. Vol.25, 2013, pp.257-265.
[9] A. P. Lepe, F. J. M. Boza, C. Gallegos, O. Gonzalez, M. E. Munoz, A. Santamari, “Influence of the processing conditions on the rheological behavior of polymer-modified bitumen”, Fuel vol.82, 2003, pp.1339–1348.
[10] F. Giuliani, F. Merusi, S. Filippi, D. Biondi, M. L. Finocchiaro, G. Polacco, “Effects of polymer modification on the fuel resistance of asphalt binders”, Fuel, vol.88(9), 2009, pp.1539-1546.
[11] C. Ouyang, S. Wang, Y. Zhang, Yinxi Zhang. “Preparation and properties of styrene-butadiene-styrene copolymer/kaolinite clay compound and asphalt modified with the compound”, Polym Degrad Stabil, vol.87, 2005, pp. 309-317.
[12] V. Mouillet, J. Lamontagne, F. Durrieu, JçP. Planche, L. Lapalu, “Infrared microscopy investigation of oxidation and phase evolution in bitumen modified with polymers”, Fuel vol.87 ,2008, pp. 1270–1280.
[13] D. O. Larsen, J. L. Alessandrini, A. Bosch, M. S. Cortizo, “Micro-structural and rheological characteristics of SBS-asphalt blends during their manufacturing Constr Build Mater, vol.23 (8), 2009, pp.2769-2774.
[14] S. Haddadi, E. Ghorbel, N. Laradi, “Effects of the manufacturing process on the performances of the bituminous binders modified with EVA”, Constr Build Mater, vol.22, 2008, pp.1212–1219.
[15] B. V. Kök, H. Çolak, “Laboratory comparison of the crumb-rubber and SBS modified bitumen and hot mix asphalt” Constr Build Mater, vol.25, 2011, pp. 3204–3212.
[16] D. Whiteoak, J. M. Read. The Shell Bitumen Handbook. London, Thomas Telford Services Ltd.; 2003.
[17] X. Lu, U. Isacsson, “Characterization of SBS polymer modified bitumen comparison of conventional methods and DMA”, J Test Eval vol.25 (4), 1997, pp.383–390.