| 1. |
- Fernandez, Ignasi, 1984, et al.
(författare)
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A ROAD TOWARDS A BETTER WRITING
- 2018
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Ingår i: Fourth International Conference on Structural Engineering Education.
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Konferensbidrag (refereegranskat)abstract
- Writing is used as primary activity within most of the master programs within Civil Engineering education to support the students to reach a significant number of learning outcomes in different courses. However, none of these activities address writing itself even less how it must be performed, so it is a demand to the students to write and critically review technical reports in many occasions without giving proper tools on how to do it. That has raised some concerns among teachers involved in the program. A more generalized problem that affects students across the entire master program is that many of them reach the final master thesis report with clear writing difficulties. In this paper, therefore, it is present a proposal on how to address the writing by introducing new Teaching/Learning Activities (TLAs), Intended Learning Outcomes (ILOs) and Assessment Activities (AAs) transversally through the master program. Consequently, some courses within the MPSEB has been selected and modified accordingly.
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| 2. |
- Fernandez, Ignasi, 1984, et al.
(författare)
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Evaluation of corrosion level of naturally corroded barsusing different cleaning methods, computed tomography,and 3D optical scanning
- 2018
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Ingår i: Materials and Structures/Materiaux et Constructions. - : Springer Science and Business Media LLC. - 1359-5997. ; 51:3
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Tidskriftsartikel (refereegranskat)abstract
- Reliable methods are necessary to assess the corrosion level to establish links between structural performance and reinforcement corrosion in concrete structures. Hence, in this study, a set of naturally corroded bars were subjected to metallic brushing, acid immersion, and sandblasting for rust removal. Additionally, 3D optical, CT scanning, and weight loss measurements were used to evaluate the levels of corrosion. The results indicate that sandblasting is an optimal cleaning method. Weight loss measurements are sufficient when detailed information about corrosion is not required, and 3D scanning is preferred if information on corrosion variation along the bar is needed.
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| 3. |
- Fernandez, Ignasi, 1984, et al.
(författare)
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Ultimate Capacity of Corroded Statically Indeterminate Reinforced Concrete Members
- 2018
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Ingår i: International Journal of Concrete Structures and Materials. - : Springer Science and Business Media LLC. - 2234-1315 .- 1976-0485. ; 12:1
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Tidskriftsartikel (refereegranskat)abstract
- The corrosion of steel reinforcement is commonly believed to be the primary cause of structural deterioration of reinforced concrete (RC) structures; as a result of this deterioration, a RC structure can incur a considerable reduction in structural serviceability and safety. Because of their inherent redundancy, statically indeterminate structures develop resistant mechanisms that can potentially assist in delaying the collapse of severely damaged RC structures. In order to experimentally demonstrate these resistant mechanisms, four groups of three two-span continuous RC beam members each were deteriorated using induced corrosion methods and tested to failure under monotonic loads. For control, one group of three RC beams was left uncorroded and similarly load tested. All the RC beam specimens subjected to corrosion demonstrated a significant reduction (a maximum reduction of 55% as compared to the uncorroded control group) of their ultimate capacity. The presence of corrosion induced a transition from flexural failure to anchorage failure in some specimens; despite the induced damage some redistributed structural capacity was observed. Modelling of deterioration effects by the inclusion of different aspects of corrosion was also conducted. Three-dimensional (3D) Finite-Element Method (FEM) models were developed to assess the variation in the mechanical properties of the corroded steel and the reduction in the bond interaction between concrete and steel due to the corrosion of the steel reinforcement. In general, the current 3D FEM models demonstrated a good agreement with the experimental data; however, 3D FEM models that exhibit greater sophistication are necessary to better describe the failure mode of some RC beam specimens when they are associated with local effects.
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| 4. |
- Gil Berrocal, Carlos, 1986, et al.
(författare)
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CYBERBRIDGE: AN INTERACTIVE TOOL TO PROMOTE ACTIVE LEARNING IN STRUCTURAL ENGINEERING COURSES
- 2018
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Ingår i: IV Int. Conference on Structural Engineering Education Structural Engineering Education Without Borders.
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Konferensbidrag (refereegranskat)abstract
- Understanding basic concepts and assumptions is a crucial step in the learning process of any subject, yet today it is not always achieved. A change of the current teaching method is suggested in this paper through the implementation of new learning activities based on digital tools. The use of interactive tools has been shown to be an effective method in the field of medicine. Although less frequent, interactive tools could also be beneficial in the field of civil engineering, particularly in structural engineering, where real lab experiments are large, costly and time consuming. By building a small-scale interactive bridge model, the students can have access to a live experiment in the classroom, which enables them to put in practice the concepts learnt during the lectures. This tool seeks promoting a deeper understanding of the subject, thereby increasing the ability of the students to describe different concepts and explain the physical meaning behind the analytical equations taught in structural engineering courses.
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| 5. |
- Gil Berrocal, Carlos, 1986, et al.
(författare)
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The road to sensor-driven cloud-based infrastructure management
- 2018
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Ingår i: SynerCrete'18: Interdisciplinary Approaches for Cement-based Materials and Structural Concrete: Synergizing Expertise and Bridging Scales of Space and Time.. ; , s. 823-828
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Konferensbidrag (refereegranskat)abstract
- Today, the accelerated degradation of many concrete structures poses a major challenge for the proper maintenance of the transport infrastructure. Therefore, inspection and maintenance operations constitute an important part of the recurrent costs of infrastructure. Furthermore, the increasing migration of population to urban areas has made sustainable development an imperative need. This need has become a driving force for innovation and new challenges such as the concept of smart cities and infrastructure. The successful utilization of newly available technologies will enable a whole new range of possibilities such as sensor driven cloud-based strategies for infrastructure management, which will promote an upgrade of the current infrastructure network to a new generation of safer, more efficient and more sustainable smart infrastructure: the infrastructure 2.0. The aim of this paper is to review the state-of-the-art of the different key technologies comprising a smart monitoring system, focusing on the aspects that are required to ensure a successful implementation of such system. The main result of the study is a scientific roadmap that can serve as a guide for traffic administrations and academic institutions in their task to develop and create a new infrastructure management strategy based on emerging technologies and innovative processes.
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| 6. |
- Robuschi, Samanta, 1991, et al.
(författare)
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Anchorage capacity of corroded smooth reinforcement bars in existing reinforced structures
- 2018
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Ingår i: Proceedings of the 12th fib International PhD Symposium in Civil Engineering. - : Czech Technical University. - 2617-4820. - 9788001064016 ; , s. 1039-1046
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Konferensbidrag (refereegranskat)abstract
- Concrete structures are strongly affected by reinforcement corrosion, the most common cause of deterioration. Most studies on structural effects of corrosion rely on artificial methods to obtain a corrosion level that would otherwise require years, but doubts on the soundness of the methods have been raised. Specimens taken from existing structures offer the chance of studying the effect of natural corrosion, however the choice of the test setup is challenging. Hence, pilot tests are carried out to investigate the optimal design for testing the anchorage capacity of specimens with smooth reinforcements. The outcome is an asymmetrically supported 3-point bending beam test. The benefits of using complementary tools as Digital Image Correlation (DIC), Non-Linear Finite Element Analysis (NLFEA), pull-out tests and tensile tests and 3D scanning of the bars are presented.
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