Browsing by Author "Ikumi Montserrat, Tai"
Now showing items 1-19 of 19
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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 ... -
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 ... -
Data-driven optimization tool for the functional, economic, and environmental properties of blended cement concrete using supplementary cementitious materials
(Elsevier, 2023-05)
Article
Open AccessThe need to produce more sustainable concrete is proving imminent given the rising environmental concerns facing the industry. Blended cement concrete, based on any of the prominent supplementary cementitious materials ... -
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 ... -
Inlfuence [sic] of early sulfate exposure on the pore network development of mortars
(Elsevier, 2017-07)
Article
Open AccessThe objective of this paper is to evaluate the influence of sulfate exposure on the pore network development of several Portland cement matrices. MIP, XRD and SEM analysis were performed at different ages in samples exposed ... -
Modified digital image correlation aided measurement of the transverse to longitudinal deformation ratio for polymeric macro-fibres
(Elsevier, 2022-11)
Article
Open AccessConsidering the increasing interest of polymeric macro-fibres reinforced concrete, a simple and straightforward method to assess the fibre’s transverse to longitudinal deformation ratio (¿f) becomes a determining aspect ... -
Neural network-aided prediction of post-cracking tensile strength of fibre-reinforced concrete
(2021-11)
Article
Open AccessStructural fibres are an effective method to improve concrete post-cracking tensile strength (fctR). Currently, the characterization of this property is mainly performed experimentally. This is a source of uncertainties ... -
New insights on the fundamentals and modeling of the external sulfate attack in concrete structures
(Universitat Politècnica de Catalunya, 2017-10-30)
Doctoral thesis
Open AccessThe external sulfate attack (ESA) is a complex degradation process typically compromising the durability of underground foundations, nuclear or industrial waste containments and tunnel linings exposed to sulfate solutions. ... -
Non-destructive techniques for determining the properties of fibre reinforced concrete
(2022)
Conference lecture
Restricted access - publisher's policyNon-destructive techniques can be used to assess the properties of FRC instead of performing tests that may increase testing time and material waste. Such techniques are oriented for both fresh and hardened state, enabling ... -
Numerical assessment of external sulfate attack in concrete structures: a review
(2019-07)
Article
Open AccessThe slow progress of the external sulfate attack and the large size and criticality of typical structures affected by this phenomenon establish numerical modeling as a key tool to assess the future evolution of concrete ... -
Performance of blended cements with limestone filler and illitic calcined clay immediately exposed to sulfate environment
(International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), 2020)
Part of book or chapter of book
Restricted access - publisher's policyThe use of ternary blended cements with limestone filler and calcined clays can improve the durability of concrete structures exposed to aggressive environments and extend their service life. In sulfate-rich environments, ... -
Simplified analytical assessment of damage induced by the external sulphate attack in concrete piles
(Springer, 2017)
Conference lecture
Restricted access - publisher's policyUnderground structures and foundations, including piles, constructed with reinforced concrete may be in contact with sulphate-rich soils and water. Structural elements exposed to these conditions may be affected by an ... -
Simplified methodology to evaluate the external sulfate attack in concrete structures
(2016-01)
Article
Open AccessThe external sulfate attack is a degradation process that causes expansion and cracking in concrete structures. Due to the absence of simplified methodologies to predict the potential damage, codes specify that sulfate ... -
Simplified model to assess the durability of elements subjected to external sulphate attack: influence of shape and size of the elements
(2016)
Conference report
Restricted access - publisher's policyThe mitigation of the external sulfate attack from the standpoint of the design of concrete structures is usually based on the use of cement with limited content of aluminates. Nevertheless, other parameters may affect the ... -
Sulfate performance of blended cements (limestone and illite calcined clay) exposed to aggressive environment after casting
(2021-09-01)
Article
Restricted access - publisher's policyThis paper evaluates how early aggressive exposure affects the sulfate resistance of blended cements containing limestone filler and/or calcined clay. Mortar and cement paste specimens were elaborated with different ... -
Sulfate resistance of blended cements (limestone illite calcined clay) exposed without previous curing
(2020)
Conference report
Open AccessDurability in aggressive environments is an important factor to extend the service life of concrete and the use ternary blended cements (limestone filler + calcined clays) can contribute to this purpose. In sulfate ... -
Synergistic effect of fatigue loading and accelerated corrosion on reinforced concrete beams
(Universitat Politècnica de Catalunya / Wuhan University, 2011)
Master thesis (pre-Bologna period)
Restricted access - author's decisionSome structures such as bridges and marine structures that are susceptible to corrosion are also subjected to repeated loading. Whenever corrosion damage can occur to the material surface of a dynamically loaded structure, ... -
The role of porosity in external sulphate attack
(2019-03)
Article
Open AccessDesign codes promote a limitation of permeability (indirectly of porosity) to reduce the sulphate ingress and improve the resistance of concrete and mortar to external sulphate attack (ESA). However, porosity could also ... -
Wireless sensing of concrete setting process
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-10-21)
Article
Open AccessAn RFID-based wireless system to measure the evolution of the setting process of cement-based materials is presented in this paper. The system consists of a wireless RFID temperature sensor that works embedded in concrete, ...
