13 documents found, page 1 of 2
Measurement of corrosion rates on reinforcement using the field test
Koteš, Peter; Zahuranec, Michal; Prokop, Jozef; Strauss, Alfred; Matos, José C.Reinforcement corrosion is a phenomenon that affects not only the durability and serviceability of the structure itself but the economy of the countries, as well. In many cases, structures and bridges must be repaired or reconstructed as a result of corrosion of the reinforcement. In extreme cases, when maintenance is neglected, it is necessary to completely replace the structures with new ones, even if their p...
IABSE survey of implemented decision-making models used by public and private o...
Strauss, Alfred; Orcesi, André; Lampropoulos, Andreas; Briseghella, Bruno; Frangopol, Dan M.; Sousa, Hélder S.; Casas, Joan; Matos, José C.Infrastructure systems, such as bridges, are a driver for the economic growth and sustainable development of countries. Similarly, the development of operation and maintenance strategies for infrastructure systems may aim at optimal management using Key Performance Indicators (KPIs) such as reliability, redundancy, availability, safety, economy, environmental performance and resilience. Recent research and deve...
Special issue on recent advances in quality control of bridges and structures
Pellegrino, Carlo; Zanini, Mariano Angelo; Faleschini, Flora; Matos, José C.; Casas, Joan Ramon; Strauss, Alfred; Clemente, Paolo[Excerpt] Many European bridge structures are decades old and need to be refurbished, or even to be replaced. However, the high fnancial investment hinders this, making the extension of their service life the only available choice in the short term. Recognizing and assessing current risk, reducing vulnerabilities through appropriate actions and monitoring the behavior of these structures are thus possible immed...
Probabilistic and semi-probabilistic analysis of slender columns frequently use...
Strauss, Alfred; Hauser, Michael; Täubling, Benjamin; Ivanković, Ana Mandić; Skokandić, Dominik; Matos, José C.; Galvão, Neryvaldo; Benko, VladimirThe stability of slender columns is a topic that has been dealt with in research and practice for many years. The importance of this topic also increases with the possibility of using non-linear modeling approaches to determine the stability and with the increasingly complex safety formats. In order to show the complexity and the variability associated with the non-linear models, two previous contributions disc...
Round-Robin modelling of the load-bearing capacity of slender columns by using ...
Strauss, Alfred; Ivankovic, Ana Mandic; Benko, Vladimir; Matos, José C.; Marchand, Pierre; Wan-Wendner, Roman; Galvao, Neryvaldo; Orcesi, AndreNon-linear finite element analyses have intrinsic model and user factors that influence the results of the analyses. However, non-linear finite element analysis can provide a tool to assess safety using realistic descriptions of material behaviour with actual material properties. A realistic estimation of the existing safety and capacity of slender column elements can be achieved by means of "true" material pro...
Comparison of forecasting models to predict concrete bridge decks performance
Ariza, Monica Patrícia Santamaria; Zambon, Ivan; Sousa, Hélder S.; Matos, José C.; Strauss, AlfredThe accuracy of forecasting models for the prediction of an infrastructure's deterioration process plays a significant role in the estimation of optimal maintenance, rehabilitation, and replacement strategies. Numerous approaches have been developed to overcome the limitations of existing forecasting models. In this article, a direct comparison is made between different models using the same input data to deriv...
Value of information (VoI) for the chloride content in reinforced concrete bridges
Zambon, Ivan; Ariza, Monica Patricia Santamaria; Matos, José C.; Strauss, AlfredThe corrosion of reinforcement caused by chloride ingress significantly reduces the length of the service life of reinforced concrete bridges. Therefore, the condition of bridges is periodically inspected by specially trained engineers regarding the possible occurrence of reinforcement corrosion. Their main goal is to ensure that the structure can resist mechanical and environmental loads and offer a satisfacto...
WG5 Technical Report – Establishment of a quality control plan, on the scope of...
Pakrashi, Vikram; Wenzel, Helmut; Matos, José C.; Casas, Joan; Strauss, Alfred; Stipanovic, Irina; Hajdin, Rade; Kedar, Amir; Guðmundsson, Guðmundur[Excerpt] This report assimilates and synthesizes the work carried out by COST Action TU1406 - Quality specifications for roadway bridges, standardization at a European level (www.tu1406.eu) in various Working Groups. The objective is thus not to create new information but to highlight and emphasize the key recommendations and guidelines developed in various working groups. The recommendations and guidelines ar...
Use of chloride ingress model for condition assessment in bridge management
Zambon, Ivan; Vidović, Anja; Strauss, Alfred; Matos, José C.Although there is a large number of established Bridge Management Systems worldwide, there seems to be a lack of those that utilise the knowledge on material properties and environmental loading. Hence, as a supplement to current practice, the paper examines the use of the chloride ingress model, supported by the International Federation for Structural Concrete, for preliminary assessment in bridge management. ...
Shear performance mechanism description using digital image correlation
Strauss, Alfred; Castillo, Pablo; Bergmeister, Konrad; Krug, Bernhard; Wan-Wendner, Roman; Marcon, Marco; Matos, José C.; Casas, Joan RamonIn engineering, quality control in systems development ensures that products and services meet expectations. There is an increasing need to develop strategies to ensure asset quality and reduce the risk of unexpected costs. Ensuring the desired service quality with minimum interruptions requires maintenance actions when the risk of service impairment, interruption or losses in life-cycle costs reach predefined ...