Course detail

Durability of Building Materials

FAST-CJ007Acad. year: 2018/2019

Introduction to problems of corroded constructions especially with respect to reasons of flaws and failures; kinds of corrosive environment, selection of suitable building materials.
The courses are concentrated especially to clear the microstructure and mechanical changes during degradation, corrosion of reinforced concrete caused by corrosive environment and classification of materials according to durability. Corrosion of metals, degradation of concrete and building materials by liquid and gaseous media, different types of water corroding reinforced concrete structures are discussed in details and the influence of solid matters, mineral fats and oils etc. are discussed as well. This is followed by discussion of surface treatment improving the building structures resistance against aggressive effects and of impregnating concrete by plastic materials respectively, spraying of concrete by macromolecular substances, painting compositions based on water glass etc. Finally the possibility of building materials durability prognosis and the methods of building materials durability determination and possibilities of their protection are discussed.
Lectures are supplemented by laboratory exercises.

Department

Institute of Technology of Building Materials and Components (THD)

Learning outcomes of the course unit

In this course students are very closely apprised with the problems of durability of building materials. Introduction of the course is devoted to the most often flaws and failures of all building materials.
Attention is furthermore focused on the principles of degradation processes caused by different types of corrosive environments (liquid, gas and solid phase), the possibility of protection structures, etc. Students will be able to for example:
• Describe in detail the degradation of principles for different types of building materials (concrete, plaster, reinforcement, plastic, etc.).
• Analyse the risks to which the structure is exposed to the specific conditions of exploitation.
• Describe in detail the methodological approaches to durability testing of building materials and apply them in practice.
• Optimize the material composition of the structure for the specific conditions of exploitation.
• Draw up and apply methods of protection structures in different conditions.
• Describe the diagnostic methods used in assessing the condition of structures.
• Assess by objective way the state respectively the degree of degradation of the material.

Prerequisites

Knowledge of possibility of plastics added into cement mortars and concrete,Theoretical and Technological Fundamentals of Inorganic Building Binders,the chemistry and technology of plaster, lime and cement manufacture. Basic knowledge necessary for the task to design composition of concrete with demanded final properties, the basic properties of input raw materials for concrete manufacture and the testing methods.General overview of ceramic raw materials properties, their processing, shaping methods in ceramics, drying, burning, properties of burnt body.

Co-requisites

General knowledge of physical chemistry. Knowledge in the field of physics applied in the construction industry. Fundamentals of Chemistry in the structure of silicates. Orientation in the methods used in evaluating the state of materials (XRD analysis, gravimetric analysis, etc.).

Recommended optional programme components

Opportunity to attend seminars and conferences relevant to solving problems. These include the international symposium organized by the Association for the Rehabilitation of Concrete Structures, as well as International Association for Science and technology of building Maintenance and Monuments Preservation etc.

Recommended or required reading

Not applicable.

Planned learning activities and teaching methods

The content of the lectures is prepared in the digital form of presentations with the largest share of graphic details that will allow to closer understanding the objective issue. The content of exercise lectures is based on the digital presentation of task, which is then clearly undertaken by experiment and then student must compile and evaluate the results in the reports.

Assesment methods and criteria linked to learning outcomes

Attendance at seminars is compulsory. During the exercise students work protocols, protocols of the working groups, some individually. Elaboration the final test min. 65% success rate. The course ends with an examination which is compulsory written and oral. To proceed to the oral is necessary to obtain at least 25 points (max 40) to pass the exam then at least another 15 in the oral part.

Language of instruction

Czech

Work placements

Internship opportunities as well and collaboration with renowned foreign institutions renowned in the field, such as Vienna University of Technology, National university of Kyiv, IBAC RWTH Aachen etc.

Course curriculum

1.Familiarization with problems of corroded buildings, durability, degradation.
2.Reasons of failures and defects of separate building materials.
3.Types of corrosive (aggressive) medium. Selection of adequate building materials, kinds of waters corroding the reinforced concrete structures.
4.Kinds of gaseous media, effect of solid material, mineral greases and oils etc. Mechanism of volume changes.
5.Explanation of chemical micro-structural and mechanical changes during degradation and corrosion.
6.Reinforced concrete degradation initiated by the effect of aggressive media.
7.Degradation of building materials initiated by the effect of aggressive media.
8.Corrosion of metals.
9.Galvanic corrosion and the measuring methods.
10.Primary protection of building materials, influence of composition and of production technology.
11.Secondary protection of concrete. Surface treatments improving the resistance of building structures against aggressive media – classification.
12.Surface treatments – properties, testing methods, failures and defects, prognosis of surface treatment service life.
13.Methods of building materials durability determination including the possibilities of protection. Prognosticating possibility of building materials durability.

Aims

Introduction to problems of corroded constructions especially with respect to failure reasons, kinds of corrosive surroundings, selection of suitable building materials. Acguaint of building materials durability prognosis and the methods of building materials durability determination and possibilities of their protection.

Specification of controlled education, way of implementation and compensation for absences

Extent and forms are specified by guarantor’s regulation updated for every academic year.

Classification of course in study plans

  • Programme N-P-E-SI (N) Master's

    branch M , 1. year of study, summer semester, 5 credits, compulsory

  • Programme N-K-C-SI (N) Master's

    branch M , 1. year of study, summer semester, 5 credits, compulsory

  • Programme N-P-C-SI (N) Master's

    branch M , 1. year of study, summer semester, 5 credits, compulsory

Type of course unit

 

Lecture

26 hours, optionally

Teacher / Lecturer

Syllabus

1.Familiarization with problems of corroded buildings, durability, degradation.
2.Reasons of failures and defects of separate building materials.
3.Types of corrosive (aggressive) medium. Selection of adequate building materials, kinds of waters corroding the reinforced concrete structures.
4.Kinds of gaseous media, effect of solid material, mineral greases and oils etc. Mechanism of volume changes.
5.Explanation of chemical micro-structural and mechanical changes during degradation and corrosion.
6.Reinforced concrete degradation initiated by the effect of aggressive media.
7.Degradation of building materials initiated by the effect of aggressive media.
8.Corrosion of metals.
9.Galvanic corrosion and the measuring methods.
10.Primary protection of building materials, influence of composition and of production technology.
11.Secondary protection of concrete. Surface treatments improving the resistance of building structures against aggressive media – classification.
12.Surface treatments – properties, testing methods, failures and defects, prognosis of surface treatment service life.
13.Methods of building materials durability determination including the possibilities of protection. Prognosticating possibility of building materials durability.

seminars

26 hours, compulsory

Teacher / Lecturer

Syllabus

♦ 1. Introductory lesson, work safety, laboratory regulations, preparation of samples for laboratory tests
♦ 2. Basics of the issue of corroded buildings, durability, degradation. Preparation of other samples for laboratory tests
♦ 3. Calculation determination of building materials,
♦ 4. Determination of influence of different types of cements on degradation by acids
♦ 5. Determination of influence of different types of cements on degradation of cement composites by organic acids of low concentration and other corrosive chemicals
♦ 6. Comparison of influence of fluid and gaseous environment on cement composites and metals
♦ 7. Secondary protection of concretes, surface treatment improving durability of structures against corrosive media – division, properties, methods of testing, flaws and failures, calculation of durability prognoses, effectivity.
♦ 8. Comparison of influence of liquid and gaseous media on paint systems on different bases.
♦ 9. Determination of effect of secondary surface protection based on different binders against corrosive media.
♦ 10. Influence of chlorides on corrosion of reinforcement in RC concretes, theory, preparation of samples
♦ 11. Influence of chlorides on corrosion of reinforcement in RC concretes, calculation models according to EU standards, measurements on samples
♦ 12. Excursions
♦ 13. Checking results, protocols, consultation, granting the credit.