Course Details
Concrete Rheology
Academic Year 2024/25
DJB053 course is part of 4 study plans
DKA-M Winter Semester 2nd year
DPA-M Winter Semester 2nd year
DKC-M Winter Semester 2nd year
DPC-M Winter Semester 2nd year
Rheological models. Rheology of non-Newtonian liquids. Equation of flow. Mixing of non-Newtonian liquids.
Measurement of consistency in concrete technology. Isostatic pressing.
Particular substances. Shape and surface of grains. Grain composition. Connections between particles of particular systems. Water and air pressure in pores.
Cement paste. Compacting. Theory of vibration compacting, factors influencing the rheological behaviour of cement paste. Problematic rheological behaviour of cement paste (Bleeding and sedimentation of cement paste). Chemical admixtures for adaptation of rheological properties (properties, acting principle, compatibility of cement and plasticizing admixture).
Rheology of fresh concrete. Effect of fresh concrete composition on consistency. Technological effects on concrete rheology.
High performance concrete.
Design of self compacting concrete composition, testing methods and practical utilization of self compacting concrete. Porous structure of hardened concrete.
Concrete properties, such as porosity, improvement of cement concrete properties, intensification of their microstructure formation.
Improvement of cement concrete properties by treatment and regulation of rheological properties of concrete mixtures.
Measurement of consistency in concrete technology. Isostatic pressing.
Particular substances. Shape and surface of grains. Grain composition. Connections between particles of particular systems. Water and air pressure in pores.
Cement paste. Compacting. Theory of vibration compacting, factors influencing the rheological behaviour of cement paste. Problematic rheological behaviour of cement paste (Bleeding and sedimentation of cement paste). Chemical admixtures for adaptation of rheological properties (properties, acting principle, compatibility of cement and plasticizing admixture).
Rheology of fresh concrete. Effect of fresh concrete composition on consistency. Technological effects on concrete rheology.
High performance concrete.
Design of self compacting concrete composition, testing methods and practical utilization of self compacting concrete. Porous structure of hardened concrete.
Concrete properties, such as porosity, improvement of cement concrete properties, intensification of their microstructure formation.
Improvement of cement concrete properties by treatment and regulation of rheological properties of concrete mixtures.
Credits
8 credits
Language of instruction
Czech
Semester
winter
Course Guarantor
Institute
Forms and criteria of assessment
examination
Entry Knowledge
Basic knowledge of the concrete technology, chemistry and binders.
Aims
Explanation of fresh concrete and of cement composite regularities from the view of non Newtonian liquids behaviour theory. Introduction to problems of non-Newtonian liquids testing (rheology of non-Newtonian liquids). Obtaining a survey about advantages and disadvantages of available testing methods for determination of rheological behaviour of fresh concrete and cement composites. Introduction to the influence of concrete components properties (for instance aggregates properties, cement compatibility and admixtures into concrete) on rheological behaviour of fresh concrete and concrete composites. Obtaining theoretical fundamentals in the field of compacting. Rheological behaviour of special types of concrete.
Basic Literature
KOMLOŠ,K.: Reológia čerstvého betónu, SAV Bratislav, 1984, ISBN 71-055-84 (sk)
HELA,R.,De SCHUTTER,G.,Bartos,P.,GIBBS,J.,DOMONE,P.: Samozhutnitelný beton, ČBS Praha 2008, ISBN 978-80-87158-12-8 (cs)
SPIRATOS,M.PAGÉ,M.,MALHOTRA,V.M.: Superplasticizers for Concrete, Marquis Quebec 2006, ISBN: 0-9731507-1-8 (en)
MACOSKO,C.: Rheology, Principles, Measurements and Applications, Wiley 1994, ISBN 0471185752 (en)
HELA,R.,De SCHUTTER,G.,Bartos,P.,GIBBS,J.,DOMONE,P.: Samozhutnitelný beton, ČBS Praha 2008, ISBN 978-80-87158-12-8 (cs)
SPIRATOS,M.PAGÉ,M.,MALHOTRA,V.M.: Superplasticizers for Concrete, Marquis Quebec 2006, ISBN: 0-9731507-1-8 (en)
MACOSKO,C.: Rheology, Principles, Measurements and Applications, Wiley 1994, ISBN 0471185752 (en)
Recommended Reading
BARTOS,P.:Fresh Concrete, Elesevier Publishers Amsterdam, 1992, ISBN 0-444881-41-7 (en)
Offered to foreign students
Not to offer
Course on BUT site
Lecture
13 weeks, 3 hours/week, elective
Syllabus
- 1. Introduction into problems. Definition of rheological phenomena. Newtonian and non-Newtonian liquids. Stream laws. Description of rheological behaviour of the cement paste.
- 2. Rheometry of cement pastes. Types of viscosimeters and rheometers. Advantages and disadvantages.
- 3. Rheological model of concrete. Components of concrete and effect of their properties on rheological behaviour of fresh concrete and of cement composites.
- 4. Compatibility of cement and plasticizing admixtures in concrete. Models of plasticizing admixtures influence.
- 5. Technological effects on concrete rheology. Problems with fresh concrete rheological behaviour (bleeding, sedimentation). Consistency measuring in concrete technology.
- 6. Processing of fresh concrete. Pumping of concrete.
- 7. Water and air pressure in pores. Compacting. Theory of compacting by vibration. Isostatic pressing.
- 8. Self compacting concrete. Self leveling putty paste.
- 9. Particular substances. Shape and surface of grains. Grain size composition. Connections between particles of the particular system.
- 10. Concrete properties as function of porosity, improving of cement concrete by intensification of microstructure. Porous structure of hardened concrete.
- 11. High performance concrete.
- 12. Post-forming of concrete.
- 13. Fibre – concrete. Light concrete. Pumping of light concrete. Self compacting light concrete.