Now showing items 1-16 of 16

    • 3D printed microstructured Au/TiO2 catalyst for hydrogen photoproduction 

      Elkoro Ugarteburu, Ander; Soler Turu, Lluís; Llorca Piqué, Jordi; Casanova Hormaechea, Ignasi (Elsevier, 2019-06-25)
      Article
      Restricted access - publisher's policy
      We successfully 3D printed Au/TiO2 monoliths for photogenerating hydrogen from water/ethanol gaseous mixtures under dynamic conditions. Monolith designs were printed by additive superposition of microfilaments of titania-based ...
    • 3D printing of structured nanotitania catalysts: a novel binder-free and low-temperature chemical sintering method 

      Elkoro Ugarteburu, Ander; Casanova Hormaechea, Ignasi (2018-09)
      Article
      Open Access
      Pure titania nanoparticles were used successfully to manufacture 3D prints of monoliths using a high-precision paste extruder and a novel binder-free, low-temperature chemical sintering method. Nanoparticles become bonded ...
    • A combined study of expansive and tensile strength evolution of mortars under sulfate attack: implications on durability assessment 

      Akpinar, Pinar; Casanova Hormaechea, Ignasi (2010-03-04)
      Article
      Open Access
      En este trabajo se presenta un estudio combinado de la evolución de la expansión y resistencia a tracción de cementos Portland con contenidos variables de C3A. Esta aproximación ha demostrado ser útil en el diagnóstico ...
    • Aggregate expansivity due to sulfied oxidation - I. Reaction system and rate model 

      Casanova Hormaechea, Ignasi; Agulló Fité, Luís; Aguado de Cea, Antonio (Aggregate expansivity due to sulfied oxidation - I. Reaction system and rate model, 1996)
      Article
      Open Access
      Oxidation and hydration of sulfides in aggregate materials can yield to expansive reactions that affect the durability of concrete. This process is, in principle, independent from the potential alkali-aggregate reactivity, ...
    • An X-ray photoelectron spectroscopy study of the hydration of C2S thin films 

      Rheinheimer, Vanessa; Casanova Hormaechea, Ignasi (2014-06)
      Article
      Restricted access - publisher's policy
      Electron-beam evaporation was used to produce thin films of ß-dicalcium silicate. Chemical and mineralogical compositions were characterized by X-ray photoelectron spectroscopy (XPS) and grazing-angle X-ray diffraction ...
    • Carbonation of high-calcium fly ashes and its potential for carbon dioxide removal in coal fired power plants 

      Cwik, Agnieszka Lucyna; Casanova Hormaechea, Ignasi; Rodriguez Rausis, Kwon Bok; Koukouzas, Nikolaos; Zarebska, Katarzyna (2018-08)
      Article
      Open Access
      Carbonation of industrial wastes rich in earth-alkali oxides is found to have a significant potential for CO2 sequestration. This process opens new perspectives not only for carbon dioxide mitigation, but also for the ...
    • CO2 sorption and regeneration properties of fly ash zeolites synthesized with the use of differentiated methods 

      Czuma, Natalia; Casanova Hormaechea, Ignasi; Baran, Pawel; Szczurowski, Jakub; Zarebska, Katarzyna (Nature, 2020-02-04)
      Article
      Open Access
      Production of fly ash zeolites may be an attractive method for the utilization of solid wastes from the energy sector. Different methods of synthesis often yield a variety of zeolite types, thereby affecting the properties ...
    • Effect of shrinkage reducing admixture on creep of recycled aggregate concrete 

      He, Zhi-hai; Hua, Hai-bo; Casanova Hormaechea, Ignasi; Liang, Chao-feng; Du, Shi-gui (Elsevier, 2020-09)
      Article
      Restricted access - publisher's policy
      It is widely accepted that recycled concrete aggregates originated from construction and demolition wastes are promising materials to contribute to the conservation and rational use of natural resources as well as the ...
    • Insights into the direct carbonation of activated lizardite: the identification a poorly reactive amorphous Mg-rich silicate phase 

      Rodriguez Rausis, Kwon Bok; Cwik, Agnieszka Lucyna; Casanova Hormaechea, Ignasi (John Gale, 2020-09)
      Article
      Restricted access - publisher's policy
      This work aims to shed light on the yet unanswered question regarding the limited carbonation yield of activatedlizardite via direct carbonation. Two amorphous Mg-rich silicate phases were identified upon activation. A ...
    • Els materials de construcció: de l’aula a l’obra. Una experiència d’aprenentatge actiu en entorn virtual 

      Pardo Tràfach, Patricia; Vázquez Suñé, Enric; Casanova Hormaechea, Ignasi; Valls del Barrio, Susanna; Etxeberria Larrañaga, Miren; Alegre, Vicente; Llamas Gaspar, David; Piza Godall, M. Sabrina; Valero Valbuena, Carlos (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2010-02-11)
      Conference lecture / Conference report
      Open Access
      El projecte consisteix en el disseny i desenvolupament d’eines i metodologia adequades per tal de facilitar a l’alumnat la visualització, comprensió i estudi de diferents aspectes relatius als materials de construcció. Així, ...
    • Nanotecnología para la calefacción de componentes de automóvil 

      Carod de Arriba, Xavier; Ferreté Aymerich, Eduard; Casanova Hormaechea, Ignasi; González Benítez, María Margarita; Mendoza Gómez, Ernesto (2012)
      Conference lecture
      Open Access
      Desde hace ya unos años, el sector de la automoción centra sus esfuerzos en fabricar productos cada vez más eficientes y respetuosos con el medio ambiente. El creciente interés en desarrollar modelos eléctricos, ha ...
    • Phase evolution during accelerated CO2 mineralization of brucite under concentrated CO2 and simulated flue gas conditions 

      Rodriguez Rausis, Kwon Bok; Cwik, Agnieszka Lucyna; Casanova Hormaechea, Ignasi (Elsevier, 2020-04)
      Article
      Restricted access - publisher's policy
      Experimental work on the carbonation of brucite has been carried out in the temperature and pressure ranges of 50-120 °C and 1-10 bar respectively, using concentrated CO2 and simulated flue gas. At 120 °C hydro- magnesite ...
    • Production and characterization of clinker thin fi lms as a new tool for nanoscale studies of hydration mechanisms 

      Rheinheimer, Vanessa; Veglio, Néstor Raúl; Casanova Hormaechea, Ignasi (Instituto de Ciencias de la Construcción Eduardo Torroja (ICCET), 2011)
      Conference report
      Restricted access - publisher's policy
      Nanometer-sized films of clinker phases have been prepared using electron-beam evaporation methods with the aim to produce suitable samples for nanoscale studies of hydration mechanisms and nanomechanical properties of ...
    • The Moon : the next international space station 

      Casanova Hormaechea, Ignasi; Sureda Anfres, Miquel; Almirall Toribio, Oriol; Boix, Álvaro; Díez, Carlos; Greaves, Jack; Molina Ordóñez, Carlos; Murnaghan, Murrough; Navarro Trastoy, Ángel; Partal, Nuria; Puljic, Stjepan; Sharique, Syed Abdul Hadi (Iniciativa Digital Politècnica. Oficina de Publicacions Acadèmiques Digitals de la UPC, 2020-07)
      Book
      Open Access
      This book stems from the work carried out by students during a single semester of the course Space Resources and Planetary Settlements of the Master degree in Space and Aeronautical Engineering of the Universitat Politècnica ...
    • Thin films as a tool for nanoscale studies of cement systems and building materials 

      Rheinheimer, Vanessa; Casanova Hormaechea, Ignasi (INtech, 2017)
      Part of book or chapter of book
      Open Access
      Many efforts have been made over the last decades to improve and develop new technologies for cement and chemical industries that can provide materials that are more durable and cost efficient, stronger and less environmentally ...
    • Utilization of high-calcium fly ashes through mineral carbonation: the cases for Greece, Poland and Spain 

      Cwik, Agnieszka Lucyna; Casanova Hormaechea, Ignasi; Rodriguez Rausis, Kwon Bok; Zarebska, Katarzyna (Elsevier, 2019-07)
      Article
      Restricted access - publisher's policy
      Limited utilization possibilities of high–calcium fly ashes (HCFA) are a serious issue not only in Europe, but also worldwide. The properties of such waste from coal-fired power plants could be conveniently treated in order ...