Building materials based on silicates

Silicate materials find applications in many industries. They are used for example in the construction industry (concrete, cement, lime), the ceramics and glass industries (from classic cups and glasses to special applications such as catalyst supports or special filters), in paint industries (binders and fillers), fireproof and refractory applications (the lining of domestic fireplaces to large foundry and glass furnaces) or in the restoration of artworks.Our group is focused on a number of projects in the field of silicates. We offer to our customers except the classic tests of materials also consulting and an expert services.

Research group of building materials based on silicates carries out sample testing of construction materials to withstand high temperatures, pressures and aggressive environment.

For testing of building materials we have a top-class laboratory equipment and qualified professionals in the properties of silicate building materials.

	Tests at elevated and high temperatures		Mechanical tests
	Combined furnace Standards: ČSN EN – 993-6, ČSN EN – 993-7 Use: Determination of flexural strength, E-modulus determination by static method in bending and creep bending at temperatures of 25-1550 ° C. Max sample size: 25x25x160mm		Equipment for determining the bending strength and pressure MATEST C089 SERIE Standards: ČSN EN 1015-11, ČSN EN 772-6, ČSN EN 1170-4, ČSN EN 993-6, ČSN EN 843-1, ČSN EN 658-3 Use: Determination of compressive? strength (0-3000kN) and bending (0-15kN). Determination of Young's modulus by the static method (pressure). Max sample size: pressure: cube sizes up to 200 mm cylinder size up to d = 160mm, h = 320 mm bending up to 200x200x800mm
	Furnace for determination of corrosion resistance refractory material by a melts Standards: ČSN P CEN/TS 15418 Use: Determination of the corrosion resistance of refractories by a melt at temperatures of 25- 1650 ° C. Available: A: Pouch corrosion test procedure B: Corrosion test by immersion of small bars, procedure C: Corrosion test in a rotating cylinder.		Equipment for determining the bending strength and pressure MATEST E183N Standards: ČSN EN 1015-11, ČSN EN 12808-3, ČSN EN 993-6 Use: Determination of compressive strength (0-250 kN) and bending (0-15kN). Determination of Young's modulus by the static method (pressure). Max sample size: Pressure: S1 = 10-100 mm, W2 = 10 to 100 mm, v = 20-180 mm Bend: 40x40x160mm
	Furnace for determination of load capacity in heat and creep in pressure Standards: ČSN EN 993-8 Use: Determination of strength in the heat and creep under pressure at temperatures of 25- 1650 ° C. Max sample size: d1 = 50mm, d2 = 12mm, h = 50mm

Instrumentation

Device name	Details
Combined furnace for determining - bending strength at high temperature, - E - module static method at high temperature, - creep bending at high temperatures	Max. temperature 1550°C Max sample size 150x25x25mm, load up to 2500N, deflection accuracy 4µm/1mm ČSN EN – 993-6, ČSN EN – 993-7
Furnace for determination of corrosion resistance refractory material by a melts	Max. temperature 1700°C, operating temperature 1650°C, 0-20 rpm, ČSN P CEN/TS 15418
Furnace for determination of load capacity in heat and creep in pressure	Max. temperature 1650°C, accuracy 4µm/1mm, load up to 0,2MPa (3 ranges) ČSN EN 993-8
Vicat automatic recording device	Determining the setting time of putty, EN-UNI 196-3, DIN 1168 SADRA, ASTM C 191
Le-Chatelier water bath	EN196-3
Moisture analyzer
Laboratory oven VENTICELL	Tempering of materials with hot air forced by the fan. Designed for temperatures up to 250 ° C.
Drying MEMMERT UF75 with forced air	Max. temparature 300°C, interior width [mm] 400, interior high [mm] 560
Automatic laboratory mixer of mortal mixtures	EN 196-1
Electro-hydraulic testing machine with a drive unit servo-plus	Determination of compressive strength (0-3000kN), flexural strength, modulus of elasticity ČSN EN 1015-11, ČSN EN 772-6, ČSN EN 1170-4, ČSN EN 993-6, ČSN EN 843-1, ČSN EN 658-3
Electro-hydraulic testing machine with microprocessor unit cyber-plus evolution	Determination of compressive strength (0-250 kN) and the bending (0-15kN), measuring the modulus of elasticity ČSN EN 1015-11, ČSN EN 993-6
Laboratory mixer of concrete mixtures LMB - C1 CYCLOS	Preparation of concrete mixtures and mortars in a volume to 70 liters. The speed of the blades 48 rpm
Vibration high frequency table VSB-70 REM	Zhutňování betonových směsí běžného i vozovkového betonu Compacting concrete mixtures of ordinary and roadway concrete. Speed 2 000-10 000 rpm.
Autoclave	V = 8l, T_max = 300°C, p_max = 40bar
Large capacity cabinet for wet storing	Storing large quantities of cement and mortar samples at saturated humidity and regulated temperature.
Diamond saw	There is even a blade for cutting metal samples
Equipment for measuring fluidity test	ČSN EN ISO 4534
Furnace	Max. temperature 1200°C, diameterr x high = 170x230 mm
Climatic chamber	Temperature = -25 to +70°C
Water bath (Matest C304-02)	Capacity = 200l, EN 196-8 EN ISO 679 ASTM C511 ASTM C109 EN 196-1

CARRYING OUT THE TEST

Flexural strength at temperatures 25-1550°C
Determination of E - module by static method (flexural) at temperatures 25-1550°C
Bend creeping at temperatures 25-1550°C
Firing at temperature up to 1650 ° C
Resistance to heat up to the temperature 1650°C
Creep in compression at temperatures up to 1650°C
Cutting of samples
Permanent linear changes in the heat
Loss on annealition
Compressive strength
Determination of E - module static method (compressive)
Density criteria
Grinding
Milling
Frost resistance

FIELDS OF ACTION

Measurement of basic physico - chemical properties of refractory materials
Expert assessment of the use of refractory materials and equipment
Expert assessment of manufacturing defects silicate materials
Applied research in the areas of shaped refractory materials
Development of new technologies for the preparation of ceramic refractory products
Applied research in the areas of unshaped refractory materials
Optimizing the properties of refractory repair and shotcrete mixtures
Development of water glass for applications in construction and foundry
Expert assessment non-flammability, respectively heat resistantantability of materials

Assessment of the properties of materials under extreme conditions allows better understand the properties of materials, to determine their real life and in non-standard situations and avoid accidents buildings in crisis situations - fires or earthquakes.

Contact:

Department of silicate building materials
Technopark Kralupy of The University of Chemistry and Technology, Prague

Dr. Ing. Petr Antoš, Ph.D.
antosp@vscht.cz
Tel. +420 22044 6110, +420 22044 6130

Ing. Jan Urbánek
urbanekj@vscht.cz
Tel. +420 22044 6121, +420 22044 4149

: 15.2.2024 14:54, : Jan Prošek