Course detail

Theoretical Basics of Special Building Materials

FAST-CJ059Acad. year: 2024/2025

Water and its influence on building materials, interface between different phases, surface tension, surface adsorption and desorption, sorption isotherm, dispersions, associative colloids, rheological properties of dispersion systems, surfactants – influence on building materials, metakaolin, fly ash, slag, water glass, alkali-activated slag, geopolymers.

Language of instruction

Czech

Number of ECTS credits

5

Mode of study

Not applicable.

Guarantor

prof. Ing. Marcela Fridrichová, CSc.

Department

Institute of Technology of Building Materials and Components (THD)

Entry knowledge

Basics of general and inorganic chemistry, chemical composition of building materials, chemical nomenclature, chemistry and technology of binders.

Rules for evaluation and completion of the course

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

Aims

Not applicable.

Study aids

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Not applicable.

Recommended reading

Not applicable.

Type of course unit

 

Lecture

26 hod., optionally

Teacher / Lecturer

prof. Ing. Marcela Fridrichová, CSc.

Syllabus

1. Water – properties and its influence on building materials 2. Interface between phases, surface tension, adsorption 3. Heterogeneous dispersions – stability, rheology 4. Surfactants – plasticizers, foaming and defoaming agents, air entraining agents, shrinkage reducing admixtures 5. Alkali-activated aluminosilicates – raw materials 6. Alkali-activators – water glass, properties 7. Slag – physico chemical properties a mineralogical composition 8. Alkali-activated slag 9. Geopolymers 10. Slag-sulfated cement and slag-lime cement

Exercise

26 hod., compulsory

Teacher / Lecturer

prof. Ing. Marcela Fridrichová, CSc.

Syllabus

1. Introduction to the laboratory sessions 2. Determination of the surface tension of water and solutes of different salts and concrete admixtures. 3. Determination of critical micelle concentration of air entraining agents. 4. Determination of the influence of different plasticizers on the rheological properties of cement paste. 5. Effect of water glass dosage on the properties of alkali-activated slag mortar. Specimen preparation and determination of 7 days strength. 6. Effect of water glass composition (silicate modulus) on the properties of alkali-activated slag mortar. Specimen preparation and determination of 7 days strength. 7. Preparation and testing of metakaolin-based geopolymer properties, determination of the influence of different activator types. 8. Effect of the mixing time on the properties of renovation plasters – bulk density, porosity and strength. 9. Assessment of efflorescence on geopolymer samples with different composition. 10. Credit.