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Browsing by Author "Navarro Domínguez, Francisco Javier"
Now showing items 1-20 of 21
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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 ... -
Bioethanol Production and Alkali Pulp Processes as Sources of Anionic Lignin Surfactants
Álvarez Barajas, Rodrigo; Cuadri Vega, Antonio Abad; Navarro Domínguez, Francisco Javier; Martínez Boza, Francisco José (MDPI, 2021)
Lignin is an abundant biopolymer with potential value-added applications that depend on biomass source and fractioning method. This work explores the use as emulsifiers of three native lignin-rich product coming from ... -
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 ... -
Bitumen modifiers for reduced temperature asphalts: a comparative analysis between three polymeric and non-polymeric additives
Cuadri Vega, Antonio Abad; Carrera Páez, Virginia; Izquierdo Rodríguez, María Ángeles; García Morales, Moisés; Navarro Domínguez, Francisco Javier (Elsevier, 2014)
This study presents three bitumen modifiers which may find successful application in the fabrication of binders for warm mix asphalt in the paving industry. In that sense, two non-polymeric additives, thiourea and thiourea ... -
Chemically-Induced Production of Anti-Inflammatory Molecules in Microalgae
Montero Lobato, Zaida; Vázquez, María; Navarro Domínguez, Francisco Javier; Fuentes Cordero, Juan Luis; Bermejo, Elisabeth; Garbayo Nores, Inés; Vílchez Lobato, Carlos; Cuaresma Franco, María (MDPI, 2018-11)
Microalgae have been widely recognized as a valuable source of natural, bioactive molecules that can benefit human health. Some molecules of commercial value synthesized by the microalgal metabolism have been proven to ... -
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 ... -
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, ... -
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 ... -
Modification of binder with tyre rubber and polymeric networks for usage in road asphalt mixes
(Universidad de Huelva, 2020)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. However, the problem of its ... -
Novel organoclay/isocyanate-based modification of bitumen for the development of high-performance composites
Ortega Bravo, Francisco José (Universidad de Huelva, 2017)
Bitumen, by-product resulting from the vacuum distillation of crude oíl, consists of a complex mixture of organic and inorganic compounds, comprising mainly aliphatic, aromatic and naphthenic hydrocarbons. Even though its ... -
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 ... -
Phosphogypsum as additive 1 for foamed bitumen 2 manufacturing used in asphalt paving
Cuadri Vega, Antonio Abad; Pérez Moreno, Silvia María; Altamar, C.L.; Navarro Domínguez, Francisco Javier; Bolívar Raya, Juan Pedro (Elsevier, 2021-02)
The aim of this work was to use phosphogypsum (FY) waste in a sustainable paving practice involving the production of FY-foamed bitumen for road applications. For this proposal, three FY types coming from different fertilizer ... -
Physico-chemical modification of asphalt bitumens by reactive agents
Cuadri Vega, Antonio Abad (Universidad de Huelva, 2013)
Bitumen, a by-product from crude oil distillation, has long been used in numerous engineering applications that range from the construction of road pavements to waterproof membranes for the roofing industry. On account of ... -
Processing of bitumens modified by a bio-oil-derived polyurethane
Cuadri Vega, Antonio Abad; García Morales, Moisés; Navarro Domínguez, Francisco Javier; Partal López, Pedro (Elsevier, 2014)
Castor oil (CO) functionalized by isocyanate groups (–NCO) is proposed as a novel bio-based reactive polyurethane (PU) for bitumen modification. This work presents a comparative analysis conducted on blends of bitumen and ... -
Short- and Long-Term Epoxy Modification of Bitumen: Modification Kinetics, Rheological Properties, and Microstructure
Cuadri Vega, Antonio Abad; Delgado Sánchez, Clara; Navarro Domínguez, Francisco Javier; Partal López, Pedro (MDPI, 2020-02)
Aiming to gain knowledge in the epoxy-bitumen modification mechanisms, this work explores the e ects that epoxy concentration and ambient curing exert on the physico-chemistry and thermo-rheological properties of ...
