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.
Language of instruction
Number of ECTS credits
Mode of study
Department
Learning outcomes of the course unit
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
Co-requisites
Planned learning activities and teaching methods
Assesment methods and criteria linked to learning outcomes
Course curriculum
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.
Work placements
Aims
Specification of controlled education, way of implementation and compensation for absences
Recommended optional programme components
Prerequisites and corequisites
Basic literature
Recommended reading
Classification of course in study plans
Type of course unit
Lecture
Teacher / Lecturer
Syllabus
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.
Exercise
Teacher / Lecturer
Syllabus
♦ 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.