Exploració per autor "Casanova Hormaechea, Ignasi"
Ara es mostren els items 1-17 de 17
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3D imaging techniques for characterising microcracks in cement-based materials
Mac, Monika Jolanta; Yio, Marcus H.N.; Desbois, Guillaume; Casanova Hormaechea, Ignasi; Wong, Hong S.; Buenfeld, Nick R. (2021-02)
Article
Accés obertConcrete inherently contains pores and microcracks that can adversely impact its mechanical properties and long-term durability. However, characterising microcracks is difficult due to their complex, multiscale and ... -
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
Accés obertWe 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
Accés obertPure 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
Accés obertEn 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
Accés obertOxidation 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
Accés restringit per política de l'editorialElectron-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-Ca fly ashes under flue gas conditions: implications for their valorization in the construction industry
Rodriguez Rausis, Kwon Bok; Cwik, Agnieszka Lucyna; Casanova Hormaechea, Ignasi; Zarebska, Katarzyna (Multidisciplinary Digital Publishing Institute (MDPI), 2021-11)
Article
Accés obertThe utilization of high-calcium fly ashes (HCFA) from coal-fired power plants in the construction industry is problematic, since their high free lime contents can lead to durability problems. In this research, the carbonation ... -
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
Accés obertCarbonation 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
Accés obertProduction 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
Accés obertIt 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
Accés obertThis 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)
Comunicació de congrés / Text en actes de congrés
Accés obertEl 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)
Comunicació de congrés
Accés obertDesde 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
Accés obertExperimental 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)
Text en actes de congrés
Accés restringit per política de l'editorialNanometer-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 ... -
Thin films as a tool for nanoscale studies of cement systems and building materials
Rheinheimer, Vanessa; Casanova Hormaechea, Ignasi (INtech, 2017)
Capítol de llibre
Accés obertMany 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
Accés obertLimited 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 ...