Susana Garcia Sanfelix

• Romero-Espinosa, Andrea; Sanfèlix, Susana G.; Morales-Cantero, Alejandro; Cuesta, Ana; Kjøniksen, Anna-Lena & Aranda, Miguel A. G. [Vis alle 8 forfattere av denne artikkelen] (2023). Processing of calcium sulfoaluminate eco-cement coatings containing microencapsulated phase change materials. Advances in Cement Research. ISSN 0951-7197. doi: 10.1680/jadcr.23.00077. Fulltekst i vitenarkiv
• Gomado, Foster Dodzi; Khalifeh, Mahmoud; Saasen, Arild; Sanfèlix, Susana G.; Kjøniksen, Anna-Lena & Aasen, Jan Aage (2023). Effect of Calcium Expansive Additives on the Performance of Granite-Based Geopolymers for Zonal Isolation in Oil and Gas Wells. SPE Journal. ISSN 1086-055X. 28(6), s. 2790–2801. doi: 10.2118/217431-PA. Fulltekst i vitenarkiv Vis sammendrag

  Geopolymers have emerged as a promising alternative to Portland cement for oil and gas wells. Achieving effective zonal isolation by use of geopolymers may require controlling their expansion. This study investigates the effect of calcium oxide (CaO) as an expansive agent on the performance of geopolymer-based sealing materials. Specifically, we explore the impact of CaO reactivity on various material properties using isothermal calorimetry, Brunauer-Emmett-Teller (BET) surface area analysis, linear expansion (LE) test, shear bond strength, compressive strength, and hydraulic bond strength (HBS). Our results indicate that CaO reactivity is a critical factor affecting the properties and performance of geopolymers for zonal isolation. Lower reactivities are associated with longer induction periods and lower heat evolution, which in turn increase LE. While lower reactivity decreases compressive strength, it increases shear bond strength. However, the CaO with the lowest reactivity resulted in a very low HBS due to matrix cracking and leakage. Therefore, optimizing the reactivity of CaO expansive agents is essential to enhancing the properties of geopolymer-based sealing materials for oil and gas wells. Shown in this paper is the successful application of CaO as an expansive agent for granite-based geopolymers at shallow depths in oil and gas wells.

• Avilés, María-Dolores; Sánchez-Rodríguez, Cristian; Pamies, Ramon Francisco Porras; Bermúdez, María-Dolores; Carrión-Vilches, Francisco-José & Sanfèlix, Susana G. [Vis alle 7 forfattere av denne artikkelen] (2022). New Water-Ethylene Glycol Lubricants with Stearate Ionic Liquid Crystal Additive. Lubricants. 10(10). doi: 10.3390/lubricants10100241. Fulltekst i vitenarkiv Vis sammendrag

  The main purpose of the present study is to improve the tribological performance of aqueous lubricants with the use of ecofriendly, fatty acid-derived additives. The protic ionic liquid crystal bis(2-hydroxyethyl)ammonium stearate (DES) has been added to 50:50 water+ethylene glycol (W–EG) to obtain (W–EG)+0.5%DES; (W–EG)+1%DES and (W–EG)+2%DES emulsions. The new lubricants have been studied in sapphire-AISI (American Iron and Steel Institute) 316L stainless-steel pin-on-disk sliding contacts. The addition of DES reduces the friction coefficient by up to 76% and wear rate by up to 80%, with respect to (W–EG). The best performance is found for the emulsions with the lower proportion of DES (0.5 and 1 wt.%). These results have been related to viscosity and turbidity values. Wear mechanisms have been studied by Scanning Electron Microscopy/Energy Dispersive X-ray Spectroscopy (SEM/EDX) and by Raman microscopy. While W–EG shows a severe abrasive mechanism, no abrasion marks are present inside the wear track after lubrication with (W–EG)+0.5%DES, the emulsion with the lowest wear rate. After lubrication with W–EG, an increase in oxygen content is observed inside the wear track, as determined by EDX and confirmed by Raman microscopy, which shows the presence of iron oxides. The addition of DES reduces these oxidation processes.

• Pilehvar, Shima; Sanfèlix, Susana G.; Szczotok-Piechaczek, Anna Maria; Rodriguez, Juan F.; Valentini, Luca & Lanzón, Marcos [Vis alle 8 forfattere av denne artikkelen] (2020). Effect of temperature on geopolymer and Portland cement composites modified with Micro-encapsulated Phase Change materials. Construction and Building Materials. ISSN 0950-0618. 252, s. 119055–119055. doi: 10.1016/j.conbuildmat.2020.119055. Fulltekst i vitenarkiv
• Zea-Garcia, Jesus D.; Sanfèlix, Susana Garcia; Vallcorba, Oriol; Aranda, Miguel A. G.; Santacruz, Isabel & Torre, Angeles G. De La (2020). Hydration Activation of Alite-Belite-Ye'elimite Cements by Doping with Boron. ACS Sustainable Chemistry and Engineering. 8(9), s. 3583–3590. doi: 10.1021/acssuschemeng.9b05975. Fulltekst i vitenarkiv
• Sanfèlix, Susana G.; Zea-García, Jesus D.; Londono-Zuluaga, Diana; Santacruz, Isabel; Torre, Ángeles G. De la & Kjøniksen, Anna-Lena (2020). Hydration development and thermal performance of calcium sulphoaluminate cements containing microencapsulated phase change materials. Cement and Concrete Research. ISSN 0008-8846. 132, s. 106039–106039. doi: 10.1016/j.cemconres.2020.106039. Fulltekst i vitenarkiv
• Sanfèlix, Susana G.; Santacruz, Isabel; Szczotok-Piechaczek, Anna Maria; Belloc, Luis Miguel O.; Torre, Ángeles G. De la & Kjøniksen, Anna-Lena (2019). Effect of Microencapsulated Phase Change Materials on the Flow Behavior of Cement Composites. Construction and Building Materials. ISSN 0950-0618. 202, s. 353–362. doi: 10.1016/j.conbuildmat.2018.12.215. Fulltekst i vitenarkiv
• Cuesta, Ana; Zea-Garcia, Jesus D; Londono-Zuluaga, Diana; Torre, Angeles G. De la; Santacruz, Isabel & Vallcorba, Oriol [Vis alle 9 forfattere av denne artikkelen] (2018). Multiscale understanding of tricalcium silicate hydration reactions. Scientific Reports. 8(1). doi: 10.1038/s41598-018-26943-y. Fulltekst i vitenarkiv Vis sammendrag

  Tricalcium silicate, the main constituent of Portland cement, hydrates to produce crystalline calcium hydroxide and calcium-silicate-hydrates (C-S-H) nanocrystalline gel. This hydration reaction is poorly understood at the nanoscale. The understanding of atomic arrangement in nanocrystalline phases is intrinsically complicated and this challenge is exacerbated by the presence of additional crystalline phase(s). Here, we use calorimetry and synchrotron X-ray powder diffraction to quantitatively follow tricalcium silicate hydration process: i) its dissolution, ii) portlandite crystallization and iii) C-S-H gel precipitation. Chiefly, synchrotron pair distribution function (PDF) allows to identify a defective clinotobermorite, Ca11Si9O28(OH)2 .8.5H2O, as the nanocrystalline component of C-S-H. Furthermore, PDF analysis also indicates that C-S-H gel contains monolayer calcium hydroxide which is stretched as recently predicted by first principles calculations. These outcomes, plus additional laboratory characterization, yielded a multiscale picture for C-S-H nanocomposite gel which explains the observed densities and Ca/Si atomic ratios at the nano- and meso- scales.

• Cuesta, Ana; Santacruz, Isabel; Sanfèlix, Susana Garcia; Fauth, François; Aranda, Miguel Angel G. & Torre, Angeles G. De la (2015). Hydration of C4AF in the presence of other phases: A synchrotron X-ray powder diffraction study. Construction and Building Materials. ISSN 0950-0618. 101, s. 818–827. doi: 10.1016/j.conbuildmat.2015.10.114. Fulltekst i vitenarkiv Vis sammendrag

  Hydration behaviour of C4AF in selected experimental conditions has been determined. C4AF has been hydrated in the absence and presence of gypsum, two polymorphs of ye'elimite and different water/solid ratios. C4AF in the presence of water hydrates to form mainly a hydrogarnet-type phase. The crystal structure of C3A0.845F0.155H6 is reported from the Rietveld analysis of its synchrotron X-ray powder diffraction pattern. The hydration of C4AF in the presence of gypsum gives AFt. However, the mixture tetracalcium aluminoferrite/gypsum/ye'elimite gives both AFt and AFm phases. C4AF hydrated with ye'elimite in the absence of gypsum gives only AFm. Ye'elimite has inhibited tetracalcium aluminoferrite hydration.

• Cuesta, Ana; Álvarez-Pinazo, Gema; Sanfèlix, Susana G.; Peral, Inma; Aranda, Miguel Angel G. & Torre, Angeles G. De la (2014). Hydration mechanisms of two polymorphs of synthetic ye'elimite. Cement and Concrete Research. ISSN 0008-8846. 63, s. 127–136. doi: 10.1016/j.cemconres.2014.05.010. Fulltekst i vitenarkiv
• Álvarez-Pinazo, Gema; Cuesta, Ana; García-Maté, Marta; Santacruz, Isabel; R.Losilla, Enrique & Sanfèlix, Susana Garcia [Vis alle 9 forfattere av denne artikkelen] (2014). In-situ early-age hydration study of sulfobelite cements by synchrotron powder diffraction. Cement and Concrete Research. ISSN 0008-8846. 56, s. 12–19. doi: 10.1016/j.cemconres.2013.10.009. Fulltekst i vitenarkiv Vis sammendrag

  Eco-friendly belite calcium sulfoaluminate (BCSA) cement hydration behavior is not yet well understood. Here, we report an in-situ synchrotron X-ray powder diffraction study for the first hours of hydration of BCSA cements. Rietveld quantitative phase analysis has been used to establish the degree of reaction (α). The hydration of a mixture of ye'elimite and gypsum revealed that ettringite formation (α ~70% at 50 h) is limited by ye'elimite dissolution. Two laboratory-prepared BCSA cements were also studied: non-active-BCSA and active-BCSA cements, with β- and α′H-belite as main phases, respectively. Ye'elimite, in the non-active-BCSA system, dissolves at higher pace (α ~25% at 1 h) than in the active-BCSA one (α ~10% at 1 h),with differences in the crystallization of ettringite (α ~30% and α ~5%, respectively). This behavior has strongly affected subsequent belite and ferrite reactivities, yielding stratlingite and other layered phases in non-active-BCSA. The dissolution and crystallization processes are reported and discussed in detail.

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• Emmanuel, Arun Chempanamthadathil; Jannatdoost, Mahdi; Awan, Farhan Khalique; Sanfèlix, Susana G.; Okkenhaug, Gudny & French, Helen Kristine (2025). Municipal Solid Waste Incineration Bottom Ash as Supplementary Cementitious Material: Influence of Treatment Methods. Fulltekst i vitenarkiv Vis sammendrag

  Municipal solid waste incineration bottom ash (MSWI-BA or simply IBA) has garnered attention as a potential supplementary cementitious material and as an aluminosilicate precursor in alkali-activated binders. However, a major challenge hindering its application is the presence of elemental aluminium, which reacts in an alkaline environment and releases hydrogen gas. This gas evolution significantly impairs the mechanical performance of the binder. Although several treatment methods have been proposed in the literature to mitigate this issue, many face criticism regarding their industrial scalability and practical feasibility. Furthermore, there is a lack of comparative studies evaluating the performance of treated IBA-based blends. This study investigates and optimises selected treatment strategies, with particular focus on a combined approach involving mechanical sieving and short-duration hot water bathing. The results demonstrate that the required duration of the hot water exposure can be significantly reduced when combined with mechanical sieving, thereby enhancing the overall efficiency of the treatment process. At a 20% replacement level, the treated IBA exhibits comparable performance to fly ash and meets the strength requirements of CEM I 52.5-grade cement.

• Tellnes, Lars G. F.; Birkeland, Marius; Kjøniksen, Anna-Lena; Røer, Henrik Skyrud & Sanfèlix, Susana G. (2024). Economic and carbon footprint assessment for energy upgrading of buildings. Scenarios for a combined warehouse and office building in Norway. Fulltekst i vitenarkiv
• Emmanuel, Arun Chempanamthadathil; Rypdal, Aurora Bjarnesdatter; Okkenhaug, Gudny; French, Helen Kristine; Nedkvitne, Eirik Nøst & Sanfelix, Susana Garcia (2024). Municipal Solid Waste Incinerated Bottom Ash as Sustainable Binder Material for Concrete. Fulltekst i vitenarkiv
• Kjøniksen, Anna-Lena; Calejo, Maria Teresa Rebelo; Cao, Vinh Duy; Pilehvar, Shima; Sanfèlix, Susana G. & Szczotok-Piechaczek, Anna Maria (2019). Advanced Materials - From drug delivery by energy technology to 3D-printing concrete on the Moon. Fulltekst i vitenarkiv
• Kjøniksen, Anna-Lena; Calejo, Maria Teresa Rebelo; Sanfèlix, Susana G.; Pilehvar, Shima; Szczotok-Piechaczek, Anna Maria & Cao, Vinh Duy (2019). Advanced Materials - From drug delivery by energy technology to 3D-printing concrete on the Moon. Fulltekst i vitenarkiv
• Sanfèlix, Susana G. (2018). Low CO2 binders with Micro-Encapsulated Phase Change Materials. Fulltekst i vitenarkiv
• Santacruz, Isabel; Romero-Espinosa, A.; Sanfèlix, Susana G.; Cuesta, A; Torre, Ángeles G. De la & Kjøniksen, Anna-Lena [Vis alle 7 forfattere av denne artikkelen] (2018). Processing and characterisation of calcium sulphoaluminate ecocements containing Microencapsulated Phase Change Materials. Fulltekst i vitenarkiv
• Sanfèlix, Susana G. (2017). How to become a scientist and not die in the process? Fulltekst i vitenarkiv
• Sanfèlix, Susana G. (2017). Micro-encapsulated phase change materials in concrete, results summary. Fulltekst i vitenarkiv
• Sanfèlix, Susana G.; Santacruz, Isabel; Szczotok-Piechaczek, Anna Maria; Ordonez, Luis M.; Torre, Angeles G. De la & Kjøniksen, Anna-Lena (2017). Rheological performance of cement composites with Microencapsulated Phase Change Materials. Fulltekst i vitenarkiv
• Sanfèlix, Susana G.; Torre, Ángeles G. De la & Kjøniksen, Anna-Lena (2016). Low CO2 binders with Micro-Encapsulated Phase Change Materials. Fulltekst i vitenarkiv
• Sanfèlix, Susana G.; Ordóñez-Belloch, Luis Miguel; López-Tendero, Maria José & López-Buendia, Angel (2014). Improvement of Cement Production Sustainability using Nano Raw Materials. International Analytical Review Alitinform. ISSN 1998-1295. 34(2). Fulltekst i vitenarkiv
• Vila-Gómez, Jaume; Lloris-Cormano, Jose Manuel; López-Tendero, Maria José; Calero-Rodríguez, Pilar; Sanjuán-García, Stephanie & Sanfèlix, Susana G. [Vis alle 9 forfattere av denne artikkelen] (2011). Photocatalytic activity of TiO2 in different types of cements and mortars. Fulltekst i vitenarkiv
• Sanfèlix, Susana G.; Ordóñez-Belloch, Luis Miguel; López-Tendero, Maria José & López-Buendia, Angel (2011). Improvement of Cement Production Sustainability Using Nano Raw Materials. Fulltekst i vitenarkiv

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