Effect of blending time and crumb rubber content on properties of crumb rubber modified asphalt binder

Mashaan, N.S. and Ali, A.H. and Karim, M.R. and Abdelaziz, M. (2011) Effect of blending time and crumb rubber content on properties of crumb rubber modified asphalt binder. International Journal of Physical Sciences, 6 (9). pp. 2189-2193. ISSN 19921950

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Abstract

The increasing use of crumb rubber modifier in flexible pavements justifies the necessity for a better understanding of its physical and rheological properties as well as its elasticity behaviour. Basically the performance and properties of rubberised asphalt binder are influenced by the blending conditions and crumb rubber content. In this study, the laboratory investigation was conducted on crumb rubber modified asphalt binder properties as a function of two blending times (30 minutes and 60 minutes) and five crumb rubber contents (4, 8, 12, 16 and 20 by weight of asphalt binder) at mixing temperature of 180°C. Statistical analysis using two-way ANOVA was conducted on the results to evaluate the significance of rubber contents and blending times. The rubberised asphalt binder was evaluated in terms of binder elasticity and rutting resistance at high temperature. The results indicate that the crumb rubber content had a significant effect on G*/ sin (δ) at 76°C. The higher crumb rubber content appears to dramatically increase the elastic recovery and ductility. Statistical analysis showed significant effect of crumb rubber content in influencing the ductility, elastic recovery and G*/ sin (δ) values. Whereas the blending time do not appears to significantly affect the ductility, elastic recovery and rutting factor (G*/ sin (δ)) of the CRM asphalt binder. The asphalt binder with higher crumb rubber content and longer blending time of 60 minutes exhibited a higher value of elastic recovery. This indicates that crumb rubber modified asphalt binder has better resistance to rutting as compared to conventional asphalt binder.

Item Type: Article
Additional Information: Cited By (since 1996):4 Export Date: 16 December 2013 Source: Scopus Language of Original Document: English Correspondence Address: Mashaan, N. S.; Center for Transportation Research, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia; email: nuhaasim@yahoo.com References: Abdelaziz, M., Karim, M.R., Rheological evaluation of ageing properties of rubber crumb modified bitumen (2003) J. Eastern Asia Soc. Trans. Stud, 5, pp. 820-833. , October 2003, ISSN 1341-8521; Abdelaziz, M., Properties of rubberised bitumen binder and its effect on the bituminous mix (1999) Master Dissertation Faculty of Engineering, , University of Malaya, Malaysia; Abdelrahman, M.A., Carpenter, S.H., Mechanism of interaction of asphalt cement with crumb rubber modifier (1999) Trans., Res. Board, pp. 106-113. , D.C.: Trans., Res. Board; Airey, G.D., Rahman, M.M., Collop, A.C., Absorption of bitumen into crumb rubber using the basket drainage method (2003) Int. J. Pav. Eng, 4 (2), pp. 105-119; Bahia, H.U., Davies, R., Effect of crumb rubber modifiers (CRM) on performance- related properties of asphalt binders (1994) J. Assoc. Asphalt Paving Technol, 63, pp. 414-441; Bahia, H.U., Hislop, W.P., Zhai, H., Rangel, A., Classification of asphalt binder into simple and complex binder (1998) J. Assoc. Asphalt Paving Technol, 67, pp. 1-41; Fontes, L.P.T.L., Triches, G., Pais, J.C., Pereira, P.A.A., Evaluating permanent deformation in asphalt rubber mixtures (2010) Constr. Build. Mater, 24, pp. 1193-1200; Ibrahim, M.R., Katman, H.Y., Karim, M.R., Mahrez, A., Properties of rubberised bitumen mixes prepared with wet and dry mixing process (2009) Proc. Eastern Asia Soc. Trans. Stud, 6, pp. 287-299; Ibrahim, M.R., Katman, H.Y., Karim, M.R., Determination of target binder content for rubberised porous asphalt (2007) Proc. Eastern Asia Soc. Trans. Stud, 6, pp. 59-75; Jeong, K.D., Lee, S.J., Amirkhanian, S.N., Kim, K.W., Interaction of crumb rubber modified asphalt binder (2010) Const. Build. Mater, 24, pp. 824-831; Katman, H.Y., Ibrahim, M.R., Karim, M.R., Abdelaziz, M., Resistance to disintegration of rubberised porous asphalt (2009) Proc. Eastern Asia Soc. Trans. Stud, 7, pp. 286-297; Katman, H.Y., Karim, M.R., Ibrahim, M.R., Abdelaziz, M., Effect of mixing type on performance of rubberised porous asphalt (2005) Proc. Eastern Asia Soc. Trans. Stud, 5, pp. 762-771; Katman, H.Y., Karim, M.R., Abdelaziz, M., Ibrahim, M.R., Performance of wet mix rubberised porous asphalt (2005) Proc. Eastern Asia Soc. Trans. Stud, 5, pp. 695-708; Liu, S., Cao, W., Fang, J., Shang, S., Variance analysis and performance evaluation of different crumb rubber modified (CRM) asphalt (2009) Constr. Build. Mater, 23, pp. 2701-2708; Mashaan, N.S., Ali, A.H., Karim, M.R., Abdelaziz, M., Effect of crumb rubber concentration on the physical and rheological properties of rubberised bitumen binders (2011) Int. J. Phys. Sci, 6 (4), pp. 684-690; Navarro, F.J., Paratal, P., Martinez Boza, F., Gallegos, C., Thermo-rheological behaviour and storage stability of ground tire rubbermodified bit (2004) Fuel, 83, pp. 2041-2049; Paulo, A.P., Jorge, C.P., (2008), Laboratory optimization of continuous blend asphalt rubber. Proc. 3rd Eur. Pav. Asset. Manage., EPAM 3. CoimbraShen, J., Amirkhanian, S.N., The influence of crumb rubber modifier (CRM) microst on the high temp. properties CRM binder (2005) Int. J. Pav. Eng, 6 (4), pp. 265-271; Thodesen, C., Shatanawi, K., Amirkhanian, S., Effect of crumb rubber characteristics on crumb rubber modified (CRM) binder visc (2009) Constr. Build. Mater, 23, pp. 295-303; Wong, C.C., Wong, W.G., Effect of crumb rubber modifiers on high temperature susceptibility wearing course mixtures (2007) Constr Build. Mater, 21, pp. 1741-1745; Yildirim, Y., Polymer modified asphalt binder (2007) J. Build. Constr. Mater, 21, pp. 66-72
Uncontrolled Keywords: Crumb rubber modified (CRM) asphalt, Elastic recovery, Rubberised asphalt, Rutting resistance
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 25 Mar 2014 07:04
Last Modified: 25 Mar 2014 07:04
URI: http://eprints.um.edu.my/id/eprint/8792

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