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International Journal of Polymer Science
Volume 2015, Article ID 234690, 8 pages
http://dx.doi.org/10.1155/2015/234690
Research Article

Recovery and Modification of Waste Tire Particles and Their Use as Reinforcements of Concrete

1Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón Esquina Paseo Tollocan S/N, 50180 Toluca, MEX, Mexico
2Laboratorio de Investigación y Desarrollo de Materiales Avanzados (LIDMA), Facultad de Química, Universidad Autónoma del Estado de México, Km 12 de la Carretera Toluca-Atlacomulco, 50200 San Cayetano, MEX, Mexico
3Centro Conjunto de Investigación en Química Sustentable, Universidad Autónoma del Estado de México-Universidad Nacional Autónoma de México (UAEM-UNAM), Carretera Toluca-Atlacomulco, Km 14.5, Unidad El Rosedal, 50200 Toluca, MEX, Mexico
4Unidad de Irradiación y Seguridad Radiológica, Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, A.P. 70-543, 04510 Mexico, DF, Mexico
5Instituto Nacional de Investigaciones Nucleares, Carretera México-Toluca S/N, La Marquesa, 52750 Ocoyoacac, MEX, Mexico

Received 5 May 2015; Accepted 22 June 2015

Academic Editor: Angel Concheiro

Copyright © 2015 Eduardo Sadot Herrera-Sosa et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Environmental pollution caused by solid wastes is increasing in the last decades; one of these is referred to automotive tires, which are recycled by different methods, including mechanical grinding. One of the most recurrent applications is to use recycled particles as fillers in building materials, as hydraulic concrete. Nevertheless, detrimental values on the mechanical properties are obtained when they are added. For solving these problems, in this work, a novel proposal is to modify the physicochemical properties of the waste automotive tire particles, previously obtained by grinding process, by using gamma irradiation in order to use them as reinforcements of hydraulic concrete. The results show that improvements on the mechanical properties depend of gamma irradiation as well as concentration and size of waste tire particles. Moreover, SEM images are related to mechanical properties; for instance, rough surface of the tire particles changes when applying irradiation; more smooth surfaces are created, due to the cross-linking of polymer chains. Nevertheless, for higher doses, cracks are observed which are produced by scission of the polymer chains.