Search Results - "Zarzuela, Rafael"
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Water-soluble fluorosilane supplemented with fumed silica as admixture for producing hydrophobic concrete: Effects on cement hydration, mechanical properties and water protection properties
Published in Developments in the built environment (01-03-2024)“…Hydrophobic admixtures protect concrete from water-related degradation, although they may have negative effects over cement hydration, mechanical properties…”
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Validation of alkoxysilane-based protective treatments for increasing service life of cementitious materials under different weathering conditions
Published in Developments in the built environment (01-10-2023)“…Gradual degradation of cementitious materials by exposure to the environment decreases the lifespan of buildings, increasing maintenance andrepair costs…”
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Studying the bulk hydrophobization of cement mortars by the combination of alkylalkoxysilane admixture and fluoropolymer-functionalized aggregate
Published in Journal of Building Engineering (15-04-2023)“…In this work, hydrophobic mortars are produced by combining a silane-based admixture with the pre-treatment of the aggregates with an alkoxysilane-ended…”
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A combined data-driven, experimental and modelling approach for assessing the optimal composition of impregnation products for cementitious materials
Published in Cement & concrete composites (01-02-2023)“…The effectiveness of sol-gel based treatments for the protection of concrete depends on their capacity to penetrate into the material pores. Optimization of…”
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Multifunctional silane-based superhydrophobic/impregnation treatments for concrete producing C-S-H gel: Validation on mockup specimens from European heritage structures
Published in Construction & building materials (27-02-2023)“…[Display omitted] •Validation performed on concrete/mortar mockups representative of 7 case studies.•Mockups specimens were aged by carbonation, induced cracks…”
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Producing C-S-H gel by reaction between silica oligomers and portlandite: A promising approach to repair cementitious materials
Published in Cement and concrete research (01-04-2020)“…Impregnation treatments are one of the alternatives to protect concrete-based building and monuments from weathering degradation. However, it is important to…”
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A Simple, Long-Lasting Treatment for Concrete by Combining Hydrophobic Performance with a Photoinduced Superhydrophilic Surface for Easy Removal of Oil Pollutants
Published in ACS applied materials & interfaces (29-04-2020)“…Superhydrophobic surfaces present promising applications in the protection of building materials, such as the self-cleaning effect promoted by their high…”
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Chemistry of the interaction between an alkoxysilane-based impregnation treatment and cementitious phases
Published in Cement and concrete research (01-04-2021)“…Chemical compatibility with a wide range of materials is among the features that has driven the use of alkoxysilanes as consolidants in built structures. Such…”
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Exploring the low cell adhesion of photoinduced superhydrophilic surfaces for improving the effect of antifouling protective coatings on porous building materials
Published in Construction & building materials (12-10-2023)“…•Multifunctional treatment combining superhydrophilic surface, waterproofing and biocide activity.•Superhydrophobic surface turns superhydrophilic under UV–Vis…”
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Alkoxysilane-based consolidation treatments: Laboratory and 3-years In-Situ assessment tests on biocalcarenite stone from Roman Theatre (Cádiz)
Published in Construction & building materials (20-12-2021)“…[Display omitted] •Effective interactions between the products and the biocalcarenite are observed.•Incorporation of SiO2NPs enhances mechanical performance…”
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The importance of physical parameters for the penetration depth of impregnation products into cementitious materials: Modelling and experimental study
Published in Construction & building materials (10-10-2020)“…[Display omitted] •Combined experimental and modelling analysis of sol penetration.•The importance of sol parameters for penetration depth depends on material…”
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Studying the influence of surface properties on the cell attachment and anti-fouling capacity of Ag/SiO2 superhydrophobic coatings for building materials
Published in Building and environment (01-09-2023)“…Anti-fouling coatings are a common solution for the protection of porous building materials from the effects of microbial colonization over their functionality…”
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4-Year in-situ assessment of a photocatalytic TiO2/SiO2 antifouling treatment for historic mortar in a coastal city
Published in Building and environment (01-11-2022)“…This manuscript presents a 4 years in-situ evaluation of TiO2/SiO2-based product applied to a mortar seating belonging to the bleachers of the Cadiz Roman…”
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Compatibility, effectiveness and susceptibility to degradation of alkoxysilane-based consolidation treatments on a carbonate stone
Published in Journal of Building Engineering (01-10-2021)“…Alkoxysilane-based consolidation treatment are commonly employed in restoration and conservation works of Cultural Heritage buildings. However, their poor…”
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CuO/SiO2 nanocomposites: A multifunctional coating for application on building stone
Published in Materials & design (15-01-2017)“…The decay of building materials is generally caused by the combination of chemical, physical and biological agents. Therefore, the development of products that…”
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Development of a novel engineered stone containing a CuO/SiO2 nanocomposite matrix with biocidal properties
Published in Construction & building materials (11-10-2021)“…[Display omitted] •Quartz particles are integrated within the silica xerogel matrix after curing at room conditions.•Excess water during mixing leads to cracks…”
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Advanced smart materials for preserving concrete heritage buildings
Published in Nature reviews. Materials (01-02-2023)“…Despite concrete being the most prominent building material of the twentieth century, the cultural heritage relevance of concrete buildings and the importance…”
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Effects of surface functionalization with alkylalkoxysilanes on the structure, visible light photoactivity and biocidal performance of Ag-TiO2 nanoparticles
Published in Powder technology (01-05-2021)“…Surface-modified Ag/TiO2 photocatalysts with enhanced activity under visible light and biocidal properties have been produced through a two-stage method…”
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A patchy particle model for C-S-H formation
Published in Cement and concrete research (01-02-2022)“…The composition and structure of Calcium-Silicate-Hydrate (C-S-H) phases depends on various reaction parameters leading to its formation. Molecular Dynamic…”
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Achieving superhydrophobic surfaces with tunable roughness on building materials via nanosecond laser texturing of silane/siloxane coatings
Published in Journal of Building Engineering (15-10-2022)“…In this work, we employ a versatile laser-based top-down approach that allows to create superhydrophobic and hydrophobic surfaces, with controlled roughness…”
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