Browsing by Author "Segura Pérez, Ignacio"
Now showing items 1-20 of 45
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A system designed to monitor in-situ the curing process of sprayed concrete
(Elsevier, 2019-11)
Article
Open AccessIn this paper a system is presented to monitor in-situ the curing process of sprayed concrete. This system consists of an instrumented trough based on wireless sensor networks for monitoring temperature/relative humidity ... -
Absorption conformations in the intercalation process of polycarboxylate ether based superplasticizers into montmorillonite clay
(Elsevier, 2020-03)
Article
Open AccessThe intercalation of polycarboxylate based superplasticizers (PCE) into montmorillonite clay (MNT) is arranged preferably by two types of absorption conformations: one-to-one conformation and bridging conformation. A third ... -
Alternative methodology to consider damage and expansions in external sulfate attack modeling
(2014-09-01)
Article
Open AccessA diffusion–reaction numerical model is proposed to simulate the response of concrete exposed to external sulfate attack. Diffusion properties are modified based on the strain reached and the ratio of porosity filled by ... -
Bioreceptivity evaluation of cementitious materials designed to stimulate biological growth
(2014-02-09)
Article
Restricted access - publisher's policyOrdinary Portland cement (OPC), the most used binder in construction, presents some disadvantages in terms of pollution (CO2 emissions) and visual impact. For this reason, green roofs and façades have gain considerable ... -
Characterization of a fibre-reinforced self-compacting concrete with 100% of mixed recycled aggregates
(WIT Press, 2017-11)
Article
Open AccessA new cement-based material is presented in this research contribution. The material consists in a fibre-reinforced self-compacting concrete with 100% of mixed recycled aggregate. Six different mixes were produced in two ... -
Conductive concrete made from recycled carbon fibres for self-heating and de-icing applications in urban furniture
(Instituto Técnico de la Construcción y del Cemento, 2020-09)
Article
Open AccessThis paper presents a broad experimental study performed at laboratory and industrial facilities to develop conductive concrete for self-heating and de-icing applications in urban furniture. Self-heating capacity is achieved ... -
Continuous monitoring of early-age properties of sprayed mortars by in situ ultrasound measurements
(Elsevier, 2021-07)
Article
Open AccessThe development of early age properties of sprayed concrete is a key factor that governs its mix design and safe application. The conventional methods to evaluate the evolution of mechanical strength in sprayed concrete ... -
Desarrollo de dovelas de hormigones reforzados con fibras no metálicas de alta durabilidad y sostenibilidad
(2022)
Conference report
Open AccessEsta investigación se ha orientado a los aspectos mecánicos y de durabilidad de hormigones reforzados con fibras no metálicas para dovelas de túneles. Se han abordado los requerimientos de resistencias residuales a ... -
Development and experimental validation of an overlay mortar with biocide activity
(2016-11)
Article
Open AccessBiodeterioration of concrete by microorganism colonisation may be a problem in several structures, especially in irrigation and hydroelectric canals. The main problem in such structures is the proliferation of algae and ... -
Development of a low pH cementitious material to enlarge bioreceptivity
(2014-03-15)
Article
Restricted access - publisher's policyThis paper presents a laboratory investigation into the development of a low-pH cementitious material in order to enlarge bioreceptivity. Two different options were tested; reduction of Ordinary Portland Cement (OPC) pH ... -
Development of conductive cementitious materials using recycled carbon fibres
(2018-09)
Article
Open AccessConductive cementitious materials have gained immense attention in recent years owing to the possibility of achieving multifunctional materials. The usual approach has been to incorporate carbonaceous nanomaterials and/or ... -
Dovelas innovadoras de alta durabilidad reforzadas sólo con fibras no metálicas
(2019-09)
Article
Open AccessLos anillos de dovelas prefabricadas de HRF son un revestimiento habitual en túneles excavados con tuneladora. DRAGADOS-gGRAVITY Engineering-UPC han querido ir un paso más allá estudiando el comportamiento de dovelas ... -
Early age hydration of cement pastes with alkaline and alkali-free accelerators for sprayed concrete
(2016-05)
Article
Open AccessThe objective of this study is to evaluate the early age hydration mechanisms of accelerated CEM I pastes. Liquid phase analysis, conductimetry, isothermal calorimetry, in situ XRD and SEM were performed on cement pastes ... -
Effects of biaxial confinement in mortars exposed to external sulfate attack
(2019-01)
Article
Open AccessResearch on external sulfate attack (ESA) is usually performed on small scale specimens under free expanding conditions. However, most field structures cannot expand freely due to confinement induced by the ground or other ... -
Evaluation of conductive concrete made with steel slag aggregates
(2022-12)
Article
Open AccessThe incorporation of black steel slag (waste from steel production) in concrete responds to a greater awareness of sustainability. In addition, it is capable of increasing electrical conductivity. The objective of this ... -
Evaluation of natural colonisation of cementitious materials: Effect of bioreceptivity and environmental conditions
(2015-04-15)
Article
Open AccessIncorporation of living organisms, such as photosynthetic organisms, on the structure envelope has become a priority in the area of architecture and construction due to aesthetical, economic and ecological advantages. ... -
Evaluation of the antimicrobial efficacy of industrial substrata
(2014-09)
Part of book or chapter of book
Restricted access - publisher's policyIn this chapter we provide different methodologies to assess the antimicrobial activity of various substrates for industrial application. The capacity of microorganisms to colonize or remain viable on a variety of media: ... -
Expansions with different origins in a concrete dam with bridge over spillway
(Elsevier, 2018-02)
Article
Open AccessConcrete dams with expansions from different origins are rare and scarcely documented in the literature, therefore their study gains special interest. This study presents the case of a 62-year-old concrete dam with signs ... -
Influence of experimental procedure on d-spacing measurement by XRD of montmorillonite clay pastes containing PCE-based superplasticizer
(2019-02)
Article
Open AccessThis study investigates the influence of the experimental procedure on determining the d-space enlargement of montmorillonite clay (MNT) produced by the absorption of polycarboxylate (PCE) based superplasticizers. d-Spacing ... -
Influence of the polymer structure of polycarboxylate-based superplasticizers on the intercalation behaviour in montmorillonite clays
(Elsevier, 2019-09)
Article
Open AccessThe influence of polymeric structure of polycarboxylate-ether (PCE) based superplasticizers on the intercalation behavior in sodium montmorillonite clay (Na-MNT) is investigated by performing in-situ X-ray diffraction ...
