A Study on the Performance of Crumb Rubber Modified Bitumen by Varying the Sizes of Crumb Rubber

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2014 by IJETT Journal
Volume-14 Number-1
Year of Publication : 2014
Authors : Nabin Rana Magar


Nabin Rana Magar. "A Study on the Performance of Crumb Rubber Modified Bitumen by Varying the Sizes of Crumb Rubber", International Journal of Engineering Trends and Technology (IJETT), V14(2),51-56 Aug 2014. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group


The abundance and increase of waste tyre disposal is a serious problem that leads to environmental pollution. Crumb rubber obtained from shredding of those scrap tires has been proven to enhance the properties of plain bitumen since the 1840s. It can be used as a cheap and environmentally friendly modification process to minimize the damage of pavement due to increase in service traffic density, axle loading and low maintenance services which has deteriorated and subjected road structures to failure more rapidly.Use of crumb rubber leads to excellent pavement life, driving comfort and low maintenance. The rheology of CRMB depends on internal factors such as crumb rubber quantity, type, particle size, source and pure bitumen composition, and external factors such as the mixing time, temperature, and also the mixing process (dry process or wet process). The present study aims in investigating the experimental performance of the bitumen modified with 15% by weight of crumb rubber varying its sizes. Four different categories of size of crumb rubber will be used, which are coarse (1?mm - 600??m); medium size (600??m - 300??m); fine (300??m-150??m); and superfine (150??m - 75??m). Common laboratory tests will be performed on the modified bitumen using various sizes of crumb rubber and thus analyzed. Marshall Stability method is adopted for mix design. Finally a comparative study is made among the modified bitumen samples using the various sizes of Crumb Rubber particles and the best size is suggested for the modification to obtain best results


[1]. "National Highways Development Project: An Overview" (PDF). Government of India. p. 1- 2. Retrieved 7 June 2014.
[2]. Roadways (CIA Factbook)". CIA, United States. Retrieved 3 April 2013.
[3]. The study of Souza and Weissman (1994) using a binder with 15% rubber content (size of 0.2,0.4 and 0.6mm) in dense- graded bitumen.
[4]. Ministry Of Road Transport & Highways (MORT & H), “Specifications for road and bridge works”.
[5]. http://www.pavementinteractive.org/
[6]. http://www.trb.org/NCHRP/NCHRP.aspx
[7]. Mix Design Methods for Asphalt Concrete and Other Hot- Mix Types, Asphalt Institute Manual Series NO.2 (MS-2), 6.
[8]. S.K. Khanna and C.E.G Justo “Highway Engineering” 2008.
[9]. Bureau of Indian Standards, Paving Bitumen- Specification (Third Revision) IS 73:2006, July 2006.
[10]. Goodrich J.L., (1998) “Bitumen and polymer modified Bitumen properties related to the performance of Bitumen concrete mixes”, Journal of the Association of Bitumen Pavement Technologists, Volume 57, pp.116-160
[11]. IRC SP: 53-2002, 2004, 2010 “Guidelines on use of Polymer and Crumb Rubber Modified binders”.
[12]. Evaluation of Crumb Rubber Modified Bitumen Mixes” journal of materials in civil engineering.
[13]. Abdelrahman MA, Carpenter SH (1999). “Mechanism of interaction of asphalt cement with crumb rubber modifier”. Transportation Research Record: J. Transport. Res. Board, 1661: 106-113.

Bitumen, CRMB, Crumb Rubber, Marshall Stability Test and Pavement