Durability of Concrete Structures (B-KUL-H0P90A)

3 ECTSEnglish24 First term
POC Bouwkunde

Concrete has proven itself as a durable construction material. However, the intended service life of a reinforced concrete structure can be greatly compromised by several deterioration processes of concrete over a specified period of time under the influence of the exposed environmental actions. This course will teach the students fundamental principles of concrete deterioration and durability, and how these are integrated in the framework for durability design of concrete structures. The focus is laid on the major degradation phenomena of reinforced concrete, techniques used for their diagnosis, and strategies to improve durability and service life of concrete structures. Fundamental concepts, approaches and requirements for durability in design codes for concrete structures are also introduced.

After successful completion of this course, the student will be able to:

  • describe durability principles and basic deterioration processes of reinforced concrete
  • apply these durability principles to formulate strategies to improve concrete durability
  • describe methods to diagnose concrete degradation
  • develop skills to undertake inspection for durability analysis and material assessment in a concrete structure
  • explain current approaches and codes for durability design of concrete structures
  • gain durability awareness and concepts to implement in structural design and management

Students should have a basic knowledge of mathematics, mechanics, chemistry and concrete technology.

Mixed prerequisite:
You may only take this course if you comply with the prerequisites. Prerequisites can be strict or flexible, or can imply simultaneity. A degree level can be also be a prerequisite.
Explanation:
STRICT: You may only take this course if you have passed or applied tolerance for the courses for which this condition is set.
FLEXIBLE: You may only take this course if you have previously taken the courses for which this condition is set.
SIMULTANEOUS: You may only take this course if you also take the courses for which this condition is set (or have taken them previously).
DEGREE: You may only take this course if you have obtained this degree level.


FLEXIBLE(H03P7A)

The codes of the course units mentioned above correspond to the following course descriptions:
H03P7A : Constructiecomponenten: gewapend beton, deel 1

Activities

2.5 ects. Durability of Concrete Structures: Lectures (B-KUL-H0P90a)

2.5 ECTSEnglishFormat: Lecture20 First term
POC Bouwkunde

This course introduces the basic properties related to the deterioration processes followed by some fundamental relationships among the different properties of concrete. Since deterioration depends on both the material properties and the environmental actions, the material properties of reinforced concrete as the central parameters for the durability performance are discussed first as the:

  • chemical properties including chemical and mineral composition (e.g., CH, C‐S‐H contents) of concrete and the electrochemical properties of reinforcement steel (e.g., corrosion resistance)
  • microstructure and related properties including the pore structure of concrete, the pore‐structure‐related properties of concrete and the characteristics of the concrete–steel interface
  • transport properties involving permeability of fluids and diffusivity of moisture and ions in concrete as a porous medium
  • mechanical properties involving fracture resistance or cracking strength of concrete which is related to the propagation of cracking from initial defects due to mechanical damage.

 

Major concrete durability issues resulting from exposure to different environments are treated in the next part. Deterioration of concrete under various environmental actions include freeze-thaw, sulfate attack, alkali aggregate reactions, leaching and efflorescence, salt crystallization, carbonation, chloride ingress and reinforcement corrosion. Then, durability test methods for certain deterioration processes and their limitations are discussed. Finally, basic concepts for durability design of concrete structures are introduced  including the methods and approaches, durability indicators, design applications, and codes and standards in use.

Course notes, PowerPoint presentations, readings and other documents available on TOLEDO.

0.5 ects. Durability of Concrete Structures: Assignment (B-KUL-H0N61a)

0.5 ECTSEnglishFormat: Assignment4 First term
POC Bouwkunde

In this OLA, acquired knowledge and insight are applied to a case study during a site visit to a concrete structure that demonstrates concrete degradation phenomena. Groups of 2 students are requested to perform inspection and analysis of concrete with a written report.

Course notes, PowerPoint presentations, readings and other documents available on TOLEDO.

Evaluation

Evaluation: Durability of Concrete Structures (B-KUL-H2P90a)

Type : Partial or continuous assessment with (final) exam during the examination period
Description of evaluation : Written
Type of questions : Open questions, Closed questions
Learning material : List of formulas, Calculator


The evaluation consists of two parts: 1) written report on a case study (20% of the points); 2) exam (80% of the points)

80% of the points will be given on the exam and the point of the assignment (20% of the points) will remain valid if it exists. If not, assessment will be based only on the exam.