Inspection, assessment and non-seismic rehabilitation of concrete structures

Recommended Prerequisites

Not applicable

Teaching Methods

Oral presentation of the main theoretical concepts and more practical information, as defined in the syllabus, with the help of audio-visual equipment, promoting the discussion with the students of several practical cases. Resolution of illustrative problems, showing how to apply the strctural codes. 

Learning Outcomes

Basic concepts about defects, pathologies, inspection and assessment of existing reinforced concrete structures.

Capacity to identify the main defects with origin in the used materials, design, or construction, use, or external actions and other influences, their causes, consequences and gravity.

Most common survey and inspection techniques, when to use them, organization of information.

Assessment procedure of a reinforced concrete structure (1st phase, prelimiminary assessment, and 2nd phase, detailed assessment), from the information which should be gathered to the conclusions which must be reached, and possible proposals to the owner.

Basic concepts on non-seismic modelling, assessment and rehabilitation of structures and their environmental impact.

Capacity to decide about if, when and how to intervene. Application of EN 1504 approach. Interventions without and with strengthening.

Innovative and sustainable materials: mortars, FRP, …

Basic fire behaviour of concrete structures

Work Placement(s)

No

Syllabus

1 - Reinforced concrete: low economic cost, high environmental cost composite material. The two constituents of reinforced concrete: durability and natural propensity for degradation.Existing structures of reinforced concrete (RCES), (environmental, social, …) need for their conservation, monitoring and rehabilitation.Design life and life cycle of RCES

2 - Concrete cover and its role on durability, mechanics and fire resistance

3 - Pathologies, defects and damage in RCES

4 - Main surveying and inspection techniques for RCES

5 - Preliminary inspection of RCES

6 - Preliminary assessment of RCES and of their performance

7 - Detailed assessment of RCES

8 - Modelling and assessment of the performance of RCES

9 - Rehabilitation (repair and strengthening) of RCES. Assessment of environmental impact. Basics of fire resistance

10 - EN 1504: Principles, methods and techniques. Non-strengthening and strengthening interventions: prestress, jacketing, FRP. Innovative and sustainable materials.

Assessment Methods

Assessment method
Mini Tests: 40.0%
Exam: 60.0%

Bibliography

Cóias, V, Inspeções e ensaios na reabilitação de edifícios, 2006, IST Press.

Raupach, M. e Büttner, T., Concrete Repair to EN 1504: Diagnosis, Design, Principles and Practice, 2014, CRC Press.

NP EN 1504. Produtos e sistemas para a protecção e reparação de estruturas de betão, 2006-2009, IPQ.

Appleton, João, Reabilitação de edifícios antigos - Patologias e tecnologias de intervenção, 2011, Orion.

CEB, Durability of Concrete Structures, Bulletin 152. 1983, CEB.

CEB, Durable Concrete Structures – Design Guide, Bulletin 183, 1992, Thomas Telford.

CEB, New Approach to Durability Design, Bulletin 238. 1997, CEB

fib Bulletin 102, Guide for protection and repair of concrete structures. 2022, fib.

fib Bulletin 103, Guide for strengthening of concrete structures. 2022, fib.

fib Bulletin 90, Externally applied FRP reinforcement for concrete structures, 2019, fib.

Costa, R. e Providência, P., "Avaliação e reabilitação sísmicas de edifícios de betão armado", engebook, 2019