Ueli Angst: Catalogue data in Autumn Semester 2022

Name Prof. Dr. Ueli Angst
FieldDurability of Engineering Materials
Address
Dauerhaftigkeit von Werkstoffen
ETH Zürich, HIF E 93.2
Laura-Hezner-Weg 7
8093 Zürich
SWITZERLAND
Telephone+41 44 633 40 24
E-mailueli.angst@ifb.baug.ethz.ch
DepartmentCivil, Environmental and Geomatic Engineering
RelationshipAssistant Professor

NumberTitleECTSHoursLecturers
101-0137-00LSteel Structures III: Advanced Steel and Composite Structures3 credits2GA. Taras, U. Angst
AbstractExpand the theoretical background and practical knowledge in the design of steel and composite structures. Special composite construction and detailling: partial connection, serviceability. Fire design. Cold-formed steel design. Crane girders; masts; tanks & silos. Structural glazing and lightweight cable-supported structures.
ObjectiveIn Steel Structures III, students will deepen and expand their theoretical background and practical knowledge of the design and construction of steel and composite structures. The focus of the course lies on design tasks and solutions in modern, multi-storey, steel-framed buildings driven by architectural needs, as well as on certain special fields of application of steel structures. Students will learn how to solve complex structural engineering tasks in larger building projects, e.g. through the use and correct design of large-span slim-floor girders and ultra-slender composite columns, or the use of glazing and cable structures as principal load-carrying components. They learn how steel structures behave under fire conditions and how they can be protected and designed accordingly. Finally, students learn about the fundamental aspects governing the design of specialty steel structures, such as thin-walled cold-formed sections, crane girders, masts and storage tanks.

The examples of scientific and standardisation work provided in the lectures give the students the opportunity to learn about the most current developments and see how these are used to shape the future practice in the structural engineering field.
ContentSteel Structures III provides in-depth theoretical background and practical knowledge on advanced design topics in steel and composite structures. The focus of the course lies on design tasks and solutions in modern, multi-storey, steel-framed buildings driven by architectural needs, as well as on certain special fields of application of steel structures. The course discusses the use and design of large-span slim-floor girders and ultra-slender composite columns, as well as the use of glazing and cable structures as principal load-carrying components. The design of steel structures under elevated temperatures (fire conditions) is treated, as well as special topics of design for serviceability. In addition, fundamental concepts of the design of cold-formed steel framed structures are discussed. Finally, the course will give an overview on the design of specialty steel structures, such as crane girders, masts and storage tanks.
Lecture notesSlides and lecture notes. Worked examples. Handouts and formula collections.
LiteratureStahlbaukalender (various editions), Ernst + Sohn, Berlin
Prerequisites / NoticePrerequisites: Steel Structures I and II
101-0615-01LMaterials Lab Exercises Restricted registration - show details 4 credits4PR. J. Flatt, U. Angst, I. Burgert, D. Kammer, H. Richner, F. Wittel
AbstractIntroduction into the basic and practical knowledge of important building materials and testing methods.
ObjectiveIntroduction into the basic and practical knowledge of important building materials and testing methods.
Contento Introduction of material testing equipment, with various examples of experiments on metals (tensile behaviour, hardness, bending and impact loading).
o Theoretical background and practical aspects of concrete technology: mixture design, casting and setting; determination of mechanical properties.
o Properties of bricks and mortar: individual materials and the composite brickwork. Parameters like strength, Young’s modulus, water absorption and thermal conductivity are determined.
o Understanding the characteristic properties of wood: anisotropy, hygroscopic behaviour, shrinkage and swelling, and effect of size on strength. Introduction to test-methods for wood and wood-products.
o Introduction into the basics of scanning electron microscopy: practical exercises with the Environmental Scanning Electron Microscope (ESEM).
o Introduction to fundamentals of Finite Element Methods and their application in examples.
o Introduction to durability of building materials and building structures: assessment of potentials for detecting and locating corrosion of steel reinforcement in concrete.
Lecture notesFor each topic a script will be provided, that can be downloaded under www.ifb.ethz.ch/education
101-0659-01LDurability and Maintenance of Reinforced Concrete4 credits2VU. Angst, Z. Zhang
AbstractWe look at the durability of reinforced concrete structures, covering common deterioration processes such as reinforcement corrosion, frost damage, ASR, etc. The course spans the range from fundamental mechanisms to aspects of engineering practice. New methods and materials for preventative measures, condition assessment and repair techniques are treated. Examples from real cases are shown.
ObjectiveAfter this course you will have profound understanding about:
• the different mechanisms of deterioration of concrete structures, in particular reinforcement corrosion
• the relevant parameters affecting durability of reinforced concrete (cover depth, concrete quality, moisture, etc.)

Furthermore, you will know:
• current engineering approaches for durability design (according to standards) and their limitations
• refined models for enhanced durability design and service life predictions
• preventive measures to improve durability (e.g. stainless steel reinforcement, concrete surface coatings, etc.)
• the particular durability challenges with post-tensioned structures and ways to overcome them (electrically isolated tendons)
• methods for inspection and condition assessment of existing, ageing structures (including non-destructive techniques and monitoring with sensors)
• repair methods for deteriorated concrete structures such as conventional repair and electrochemical methods (in particular cathodic protection)
• possible future problems for durability that may arise with modern materials and construction technologies
Content• Socio-economic challenges related to ageing infrastructures
• Fundamentals of corrosion and durability: Corrosion in concrete (chlorides, carbonation). Passivity and pitting corrosion. Cracking and influence of cracks.
• Degradation mechanisms for concrete: sulphate attack, ASR, frost attack.
• Inspection and condition assessment: Chloride analyses, carbonation depth, etc. Non-destructive tests, particularly potential mapping to detect corrosion. New developments (for example, monitoring with sensors).
• Pre-stressed and post-tensioned structures: problem with existing structures. New systems with polymer ducts / electrically isolated tendons. Monitoring techniques. Applications.
• Stainless steel as reinforcing steel for concrete: Different types of stainless steels. Coupling with black reinforcing steel. Examples of application. Life-cycle-costs.
• Repair methods: Conventional. Coatings. Corrosion inhibitors. Electrochemical methods, in particular cathodic protection.
• Durability design: Prescriptive approach (standards). Service life modeling. Limitations and opportunities.
• Modern materials and construction technologies: Discussion of expected implications for the durability of structures today and in the future.

Excursion:
• We generally try to organize a site-visit (depending on availability of construction sites). Presumably, we will visit an installation site of cathodic protection on a concrete structure in the Zurich area.
Lecture notesThe course is based on the book
Corrosion of steel in concrete - prevention diagnosis repair (WILEY 2013) by L. Bertolini, B. Elsener, P. Pedeferri and R. Polder

Slides of the lectures will be distributed in advance

Special handouts and reprints for particular topics will be distributed
LiteratureThe course is based on the book
Corrosion of steel in concrete - prevention diagnosis repair (WILEY 2013) by L. Bertolini, B. Elsener, P. Pedeferri and R. Polder

Slides of the lectures will be distributed in advance

Special handouts and reprints for particular topics will be distributed
Prerequisites / NoticeForm of teaching:
The course is a lecture that contains frequent discussion and interaction between students and lecturer. You will see and work on many examples from engineering practice, both during the lectures and in the form of exercises to be solved at home.

Report:
Each student will work on a small case study and deliver a report during the semester. The report will be graded.

Excursion:
We generally try to organize a site-visit (depending on availability of construction sites). Presumably, we will visit an installation site of cathodic protection on a concrete structure in the Zurich area.
CompetenciesCompetencies
Subject-specific CompetenciesConcepts and Theoriesassessed
Techniques and Technologiesassessed
Method-specific CompetenciesAnalytical Competenciesassessed
Decision-makingassessed
Media and Digital Technologiesfostered
Problem-solvingassessed
Project Managementfostered
Social CompetenciesCommunicationassessed
Cooperation and Teamworkassessed
Customer Orientationfostered
Leadership and Responsibilityfostered
Self-presentation and Social Influence fostered
Sensitivity to Diversityfostered
Negotiationfostered
Personal CompetenciesAdaptability and Flexibilityfostered
Creative Thinkingassessed
Critical Thinkingassessed
Integrity and Work Ethicsassessed
Self-awareness and Self-reflection fostered
Self-direction and Self-management assessed