SURFACE MODIFICATION OF RUBBER FROM END-OF-LIFE TIRES FOR USE IN CONCRETE: A DESIGN OF EXPERIMENTS APPROACH

ABSTRACT A large amount of discarded tire waste generated year after year has encouraged the scientific community to seek alternatives for recycling or reusing this waste. The cross-linked nature and the high number of additives in tires make recycling significantly difficult. Thus, the use of parti...

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Autores principales:	Villa,Bárbara, García,Eduardo, Pradena,Mauricio, Flores,Paulo, Medina,Carlos, Campos-Requena,Víctor H., Urbano,Bruno F.
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2020
Materias:	Rubber tires concrete peroxide oxidation Fenton
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072020000404988
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spelling	oai:scielo:S0717-970720200004049882020-12-03SURFACE MODIFICATION OF RUBBER FROM END-OF-LIFE TIRES FOR USE IN CONCRETE: A DESIGN OF EXPERIMENTS APPROACHVilla,BárbaraGarcía,EduardoPradena,MauricioFlores,PauloMedina,CarlosCampos-Requena,Víctor H.Urbano,Bruno F. Rubber tires concrete peroxide oxidation Fenton ABSTRACT A large amount of discarded tire waste generated year after year has encouraged the scientific community to seek alternatives for recycling or reusing this waste. The cross-linked nature and the high number of additives in tires make recycling significantly difficult. Thus, the use of particulate rubber as filler for other materials such as concrete has emerged as an attractive alternative. However, the hydrophobic nature of the rubber and hydrophilic particles of cement decreases the compatibility at the cementitious matrix-rubber interface, affecting the concrete's final performance. This work presents a method based on hydrogen peroxide and Fenton for the oxidation of rubber particles from end-of-life tires to introduce hydrophilic groups on the surface of the particles to improve compatibility at the interface. The method was studied from an experimental design approach based on the infrared spectroscopy response and using a Rechtschaffner Resolution V design, PCA and PLSR in order to evaluate variables such as time, temperature and reactants. The concentration of H2O2 and reaction temperature was shown to increase the oxidation, while Fenton reduces the time of oxidation.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.65 n.4 20202020-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072020000404988en10.4067/S0717-97072020000404988
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Rubber tires concrete peroxide oxidation Fenton
spellingShingle	Rubber tires concrete peroxide oxidation Fenton Villa,Bárbara García,Eduardo Pradena,Mauricio Flores,Paulo Medina,Carlos Campos-Requena,Víctor H. Urbano,Bruno F. SURFACE MODIFICATION OF RUBBER FROM END-OF-LIFE TIRES FOR USE IN CONCRETE: A DESIGN OF EXPERIMENTS APPROACH
description	ABSTRACT A large amount of discarded tire waste generated year after year has encouraged the scientific community to seek alternatives for recycling or reusing this waste. The cross-linked nature and the high number of additives in tires make recycling significantly difficult. Thus, the use of particulate rubber as filler for other materials such as concrete has emerged as an attractive alternative. However, the hydrophobic nature of the rubber and hydrophilic particles of cement decreases the compatibility at the cementitious matrix-rubber interface, affecting the concrete's final performance. This work presents a method based on hydrogen peroxide and Fenton for the oxidation of rubber particles from end-of-life tires to introduce hydrophilic groups on the surface of the particles to improve compatibility at the interface. The method was studied from an experimental design approach based on the infrared spectroscopy response and using a Rechtschaffner Resolution V design, PCA and PLSR in order to evaluate variables such as time, temperature and reactants. The concentration of H2O2 and reaction temperature was shown to increase the oxidation, while Fenton reduces the time of oxidation.
author	Villa,Bárbara García,Eduardo Pradena,Mauricio Flores,Paulo Medina,Carlos Campos-Requena,Víctor H. Urbano,Bruno F.
author_facet	Villa,Bárbara García,Eduardo Pradena,Mauricio Flores,Paulo Medina,Carlos Campos-Requena,Víctor H. Urbano,Bruno F.
author_sort	Villa,Bárbara
title	SURFACE MODIFICATION OF RUBBER FROM END-OF-LIFE TIRES FOR USE IN CONCRETE: A DESIGN OF EXPERIMENTS APPROACH
title_short	SURFACE MODIFICATION OF RUBBER FROM END-OF-LIFE TIRES FOR USE IN CONCRETE: A DESIGN OF EXPERIMENTS APPROACH
title_full	SURFACE MODIFICATION OF RUBBER FROM END-OF-LIFE TIRES FOR USE IN CONCRETE: A DESIGN OF EXPERIMENTS APPROACH
title_fullStr	SURFACE MODIFICATION OF RUBBER FROM END-OF-LIFE TIRES FOR USE IN CONCRETE: A DESIGN OF EXPERIMENTS APPROACH
title_full_unstemmed	SURFACE MODIFICATION OF RUBBER FROM END-OF-LIFE TIRES FOR USE IN CONCRETE: A DESIGN OF EXPERIMENTS APPROACH
title_sort	surface modification of rubber from end-of-life tires for use in concrete: a design of experiments approach
publisher	Sociedad Chilena de Química
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072020000404988
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SURFACE MODIFICATION OF RUBBER FROM END-OF-LIFE TIRES FOR USE IN CONCRETE: A DESIGN OF EXPERIMENTS APPROACH

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