Course Details

Theoretical Basics of Special Building Materials

Academic Year 2023/24

NJB042 course is part of 1 study plan

NPC-SIM Winter Semester 2nd year

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.

Course Guarantor

Institute

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.

Prerequisites

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

Language of instruction

Czech

Credits

5 credits

Semester

winter

Forms and criteria of assessment

course-unit credit and examination

Specification of controlled instruction, the form of instruction, and the form of compensation of the absences

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

Offered to foreign students

Not to offer

Course on BUT site

Lecture

13 weeks, 2 hours/week, elective

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

13 weeks, 2 hours/week, compulsory

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.