Binder Systems

Mortars

Basic and applied research in the field of silicate technologies
Design of optimal technologies in the field of mortars and burnt products
Research and consultancy activities in the field of Portland clinker and cement quality
Assessment and suitability testing of natural and secondary raw materials for clinker burning, cement production and other binding materials production, calculations of raw material meal composition
Suitability assessment of limestone for lime burning and dolomites for half-burnt dolomite burning
Suitability assessment of lime for lime hydrate production, possibilities of model tests
Preparation and testing of autoclaved materials, prepared on basis of calcium hydro-silicates
Suitability assessment of dolomites for industrial use
Suitability verification of raw materials for the production of lightweight clay artificial aggregate and expanded perlite

Verification and evaluation of the binding material quality according to standards CSN, EN and DIN and also according to customer´s methodology
Determination of cement hydration heat by dissolving method according to Czech standard CSN EN 196-8
Supplying of standards for calibration of Blaine apparatus used for specific surface determination
Measurement of hydration temperatures course of hydraulic binders by means of differential and semi-adiabatic calorimeter
Rheological properties testing of lime putty and other non-Newtonian fluids (Brookfield DV-E viscosimeter, Rheotest II. viscosimeter)
Emley’s plasticity determination of lime putty (ASTM C110-76)

Verification of physical-mechanical properties of raw materials from the point of adjustment process (determination of grindability according to Zeisel, VTI, abrasivity test etc.)
Crushing, milling and homogenization of specimens up to 100 kg
Sieve analyses on screening machine Alpine
Firing in laboratory kilns up to 1700 °C and in amount up to 3 kg
Flameproof finish of materials in model rotary kiln up to 1500 °C in amount 2 kg/h

Qualitative phase analysis of inorganic materials (including indentification of asbestos minerals)
Quantitative determination of crystalline and amorphous phases
High-temperature X-ray diffractometry (identification of phase transformations up to 1600°C)
Analysis of powder and solid samples

Determination of quantitative phase composition of clinkers and cements by optical microscopy
Slag glassiness determination, determination of slag and other admixtures content in cement
Petrographical analyses of raw materials by means of optical microscopy
Identification of alit and belit modifications in Portland cement clinker by high temperature microphotometry
Fluorescence microscopy techniques

Simultaneous DTA/TG
TG measurement
Maximal temperature ca. 1400 °C
Heating speed up to 100 °C/min
High-temperature dilatometry up to 1500 °C
Determination of reactivity and burnability of raw material meal using kinetic method

Rheological properties determination of liquids, emulsions, dispersions, polymers, pastes, gels and also some solids
Specifications – torque 10 nN.m – 150 mN.m, high resolution 10 nrad, angular velocity up to 300 rad/sec, normal force up to 50 N
Measuring also with own geometries
Regimes – oscillation measurement, flow measurement, creep regime

Porosity determination in range of 3,75 – 10000 nm by pressure mercury porosimetry
Determination of specific surface by BET adsorption method
Grading analysis of loose materials in range of 0,3 – 400 µm by means of laser grading analysis
Determination of particles stability in dispersal environment using measurement of zeta potential and nanoparticle analysis (in range 2 – 3000 nm)
Preparation of pure clinker phases (in kilograms)

Mgr. Martin Boháč, Ph.D.
mobile: +420 732 735 861
e-mail: bohac@vush.cz

calorimetry, raw material composition, limestone, rheology, xonotlite, tobermorite, X-ray diffraction, rheometry