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Browsing by Author "Partal López, Pedro"
Now showing items 1-20 of 27
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Ageing Effects on a Softened Bitumen by the Addition of DSA (Dodecenyl Succinic Anhydride)
Ortega Bravo, Francisco José
; Cuadri Vega, Antonio Abad; Partal López, Pedro; Navarro Domínguez, Francisco Javier (MDPI, 2022-06)
The softening of aged bitumen is necessary for a successful asphalt rejuvenation in road recycling operations. Thus, this study proposes a novel and successful approach by using Dodecenyl Succinic Anhydride (DSA), a ... -
Bitumen chemical modification by thiourea dioxide
Cuadri Vega, Antonio Abad; Partal López, Pedro; Navarro Domínguez, Francisco Javier; García Morales, Moisés; Gallegos Montes, Críspulo (Elsevier, 2011)
This work evaluates a novel bitumen modification through the use of a chemical agent, thiourea dioxide, substance which has been traditionally used as a reducing agent. Thermogravimetric analysis demonstrated the formation ... -
Chemically modified bitumens with enhanced rheology and adhesion properties to siliceous aggregates
Cuadri Vega, Antonio Abad; Partal López, Pedro; Ahmad, Naveed; Grenfell, James; Airey, Gordon (Elsevier, 2015)
Moisture damage is one of the major premature failures that worsens the performance and shortens service life of pavements. This research assesses the effect that two chemical modifiers (thiourea and an isocyanate-functionalized ... -
Desarrollo de bioplásticos a partir de subproductos agroalimentarios con aplicaciones en envases y matrices de difusión
Gómez Martínez, Diana Patricia (Universidad de Huelva, 2013)
El término bioplástico hace referencia a los plásticos que se obtienen de materias primas renovables o a los que simplemente son biodegradables. De mayor interés son los obtenidos a partir de mezclas de biopolímero y ... -
The development of polyurethane modified bitumen emulsions for cold mix applications
Carrera Páez, Virginia; Cuadri Vega, Antonio Abad; García Morales, Moisés; Partal López, Pedro (Springer Verlag, 2015)
Bitumen emulsions stand for an alternative paving practice to the traditional hot-mix asphalts. In addition, modified bitumen emulsions show a better performance than unmodified ones. This work studies the feasibility of ... -
Effect of transesterification degree and post-treatment on the in-service performance of NCO-functionalized vegetable oil bituminous products
Cuadri Vega, Antonio Abad; García Morales, Moisés; Navarro Domínguez, Francisco Javier; Partal López, Pedro (Elsevier, 2014)
The bitumen modification through polyurethane prepolymers presents significant benefits for the manufacture of bituminous products for the paving industry. In this sense, this work explores the use, as bitumen modifier, ... -
Emulsion Stabilization by Cationic Lignin Surfactants Derived from Bioethanol Production and Kraft Pulping Processes
Yuliestyan, Avido; Partal López, Pedro; Navarro Domínguez, Francisco Javier; Martín Sampedro, Raquel; Ibarra, David; Eugenio, María Eugenia (MDPI, 2022-07)
Oil-in-water bitumen emulsions stabilized by biobased surfactants such as lignin are in line with the current sustainable approaches of the asphalt industry involving bitumen emulsions for reduced temperature asphalt ... -
Emulsiones alimentarias aceite-en-agua estabilizadas con proteínas de atún
Ruiz Márquez, Dolores; Partal López, Pedro; Franco Gómez, José María; Gallegos Montes, Críspulo (Consejo Superior de Investigaciones Científicas; Instituto de la Grasa y sus Derivados, 2010)
El presente trabajo se ha centrado en el desarrollo de emulsiones alimentarias aceite-en-agua estabilizadas con proteínas de atún. Específicamente, se ha analizado la influencia del método de conservación de las proteínas ... -
End-performance evaluation of thiourea-modified bituminous binders through viscous flow and linear viscoelasticy testing
Cuadri Vega, Antonio Abad; García Morales, Moisés; Navarro Domínguez, Francisco Javier; Airey, Gordon; Partal López, Pedro (Spinger Verlag, 2013)
Straight-run bitumens are no longer suitable in new asphalt mixtures. Consequently, the use of modified bitumens has become more important. In order to both improve binders mechanical properties and prevent it from phase ... -
Enhancing the viscoelastic properties of bituminous binders via thiourea-modification
Cuadri Vega, Antonio Abad; García Morales, Moisés; Navarro Domínguez, Francisco Javier; Partal López, Pedro (Elsevier, 2012)
Although added in a very low concentration, bitumen controls the final properties and performance of the resulting asphalt mixture. As an alternative to classic bitumen modification with polymers, we herein propose the use ... -
Formulation and processing of novel non-aqueous polyethylene glycol-in-silicone oil (o/o) phase change emulsions
Delgado Sánchez, Clara; Cuadri Vega, Antonio Abad; Navarro Domínguez, Francisco Javier; Partal López, Pedro (Elsevier, 2021-03)
Oil-in-oil phase change emulsions, composed of phase change materials (PCMs) dispersed in a continuous oily medium, have never been reported in the literature. The current study involves the formulation, stabilisation ... -
Hybrid Rubberised Bitumen from Reactive and Non-Reactive Ethylene Copolymers
Senise, Simona; Carrera Páez, Virginia; Cuadri Vega, Antonio Abad; Navarro Domínguez, Francisco Javier; Partal López, Pedro (MDPI, 2019-11)
Hybrid modification is a relatively new concept of incorporating two or more polymeric modifiers of different nature to a bitumen, in order to take advantage of their complementary features. Aiming to this, in this paper, ... -
Influence of polymer melting point and melt flow index on the performance of ethylene-vinyl-acetate modified bitumen for reduced-temperature application
Yuliestyan, Avido; Cuadri Vega, Antonio Abad; García Morales, Moisés; Partal López, Pedro (Elsevier, 2016)
The paving industry is currently demanding polymer modified bitumens (PMBs) with enhanced in-service performance and low enough viscosity at lower application temperatures. With this aim, this study focuses on the use of ... -
Influence of the prepolymer molecular weight and free isocyanate content on the rheology of polyurethane modified bitumens
Carrera Páez, Virginia; Cuadri Vega, Antonio Abad; García Morales, Moisés; Partal López, Pedro (Elsevier, 2014)
Isocyanate-based modification is lately gaining acceptance as a successful way to give added value to bitumen, a crude oil refining by-product. In order to study the influence of prepolymer type on the rheological properties ... -
Influencia del pH y de la fuerza iónica sobre la gelificación térmica de proteínas de la yema de huevo
Partal López, Pedro; Guerrero Conejo, Antonio F.; Cordobés Carmona, Felipe; Carmona Gallego, José Antonio; Martinez García, Inmaculada (Consejo Superior de Investigaciones Científicas, CSIC: Instituto de la Grasa, 2007-09)
En este trabajo se estudiaron las transiciones térmicas de la yema de huevo usando técnicas de calorimetría diferencial de barrido (DSC) y ensayos viscoelásticos lineales, más concretamente, ensayos de cizalla oscilatoria ... -
La ingeniería del producto químico : un paradigma de la ingeniería química : lección Inaugural, curso académico 2020-2021
Partal López, Pedro (Universidad de Huelva, 2020)
A lo largo de esta Lección conoceremos la historia de la Ingeniería Química, que enlazaremos con sus paradigmas, entendidos como nuevas formas de pensar y de resolver los retos de la industria química, muchos de ellos ... -
Isocyanate-functionalized castor oil as a novel bitumen modifier
Cuadri Vega, Antonio Abad; García Morales, Moisés; Navarro Domínguez, Francisco Javier; Partal López, Pedro (Elsevier, 2013)
The use of biomaterials from renewable sources in the synthesis of polyurethane-derived polymers is lately receiving great attention from social, environmental and economic standpoints. In this work, prepolymers having ... -
Modificación reactiva de betunes con prepolímeros basados en isocianato
(Universidad de Huelva, 2014)Los materiales bituminosos presentan una serie de propiedades, tales como ductilidad, adhesividad, resistencia al efecto de los factores ambientales y químicos, etc. Estas características permiten su utilización en el ... -
New Bitumens Obtained from Physical Distillation of a Conventional Bitumen Mixed with EVA Copolymer
Goikoetxeaundia, Goretti; Mateos, Alexander; Muñoz, María Eugenia; Santamaría, Anton; Martinez García, Inmaculada; Partal López, Pedro (Bentham Science Publishers, 2008)
Bitumen phases separated from 5% and 12% EVA/bitumen blends are investigated. Basic characterization is carried out using a peculiar thin layer chromatographer, the Iatroscan. The rheological and technical analysis lead ... -
Oil-in-Oil emulsions of stearic acid dispersed in silicone oil with enhanced energy storage capability for heat transfer fluids
Delgado Sánchez, Clara; Partal López, Pedro; Martín Alfonso, María José; Navarro Domínguez, Francisco Javier (Elsevier, 2022-07-17)
Non-aqueous phase change emulsions are very unknown and promising multifunctional fluids consisting of phase change materials dispersed in carrier fluids, both being oily phases. The oil-in-oil phase change emulsions allow ...
