Challenges and Recent Developments in the Assessment and Retrofitting of Reinforced Concrete Structures

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Civil Engineering".

Deadline for manuscript submissions: closed (31 October 2023) | Viewed by 2931

Special Issue Editors

CERIS, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal
Interests: seismic engineering; structural engineering; experimental testing; numerical modelling; masonry infill walls; reinforced concrete structures; seismic vulnerability assessment; retrofitting; energy efficiency
Special Issues, Collections and Topics in MDPI journals
Sustainable Construction Materials Association, Edifício Central Park, Rua Central Park 6, 2795-242 Linda-a-Velha, Portugal
Interests: material characterization; finite element analysis;structural dynamics; structural analysis; construction engineering; construction earthquake engineering; civil engineering materials; construction materials; building materials
Special Issues, Collections and Topics in MDPI journals
Department of Structures for Engineering and Architecture University of Naples Federico II, Naples, Italy
Interests: construction engineering; civil engineering; structural engineering; reinforced concrete; earthquake engineering; structural analysis; structural dynamics; concrete building; construction technology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Reinforced concrete structures are present in cities all over the world and form part of the modern built heritage. Most of these structures are currently reaching the end of their service life and need assessment and retrofitting. Others were not designed according to modern codes and have serious structural deficiencies and seismic vulnerabilities. Research concerning the assessment methodologies and efficient retrofitting strategies associated with these structures has evolved significantly in recent years and demonstrates the importance of updated modern codes.

This Special Issue intends to cover multiple issues in this field, namely those related to the computational modelling or experimental testing of reinforced concrete structures. In addition, research works on the computational modelling of cementitious composites will be covered. They include, but are not limited to, conventional concrete, fibre-reinforced concrete, high- and ultra-high-performance concrete, and 3D-printed concrete. Modelling approaches often resort to computational methods that are capable of simulating the material mechanics on different scales and under different actions that are used to explain the behaviour of concrete structures. In line with engineering practice, advancements in models and methods for the analysis and design of these structures are also addressed. Structural modelling for real applications is also covered, including modelling not only for the analysis of challenging and outstanding new concrete structures, but also for assessing the structural health and the need for strengthening and repairing the existing concrete structures, using methods that combine inspection with reliability analysis. Contributions on the structural health monitoring of existing structures are also welcome. Finally, works related to feasibility analysis, seismic and vulnerability performance analysis are also in the scope of this Special Issue.

Dr. André Furtado
Dr. João Pacheco
Dr. Marta Del Zoppo
Guest Editors

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  • reinforced concrete structures
  • computational modelling
  • experimental testing
  • retrofitting
  • assessment
  • monitoring

Published Papers (1 paper)

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24 pages, 6438 KiB  
Revisiting Cracking in Reinforced Concrete Beams: An Updated Analysis
Appl. Sci. 2023, 13(6), 3926; - 20 Mar 2023
Cited by 1 | Viewed by 2697
As materials and structural optimization continue to be important in design, structural safety checks for service limit states have become increasingly important. One key aspect of these checks is the controlling of cracks to prevent them from affecting the structure’s function or appearance. [...] Read more.
As materials and structural optimization continue to be important in design, structural safety checks for service limit states have become increasingly important. One key aspect of these checks is the controlling of cracks to prevent them from affecting the structure’s function or appearance. However, the authors have found that current regulations do not accurately reflect the reality of crack behavior. This is the case of the crack spacing. To address this issue, the authors conducted experiments on 27 reinforced concrete beams to investigate crack location, cracking moment, corresponding deflection, and crack width values as sag increases. Their main finding was that cracks tend to appear at the stirrup locations, and that crack width increases linearly with the sag-to-free-span ratio up to the yielding point. They also concluded that increasing the amount of tensile reinforcement is an effective way to reduce crack width for the same sag. Full article
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