Fire-resistant, non-combustible and refractory materials

Veselí nad Lužnicí, Čs. armády 540, 391 81 Veselí nad Lužnicí, Czech republic www.grena.cz Tel.: 00420 381 549 111 Fax: 00420 381 581 071 e-mail: [email protected]

Detail view of exfoliated vermiculite granules

Micron

Superfine

Vermiculiteis a member of the phyllosilicate or the sheet silicate group. It is a complex of magnesium, aluminium and iron silicate. The name “vermiculite“ is derived from the Latin word “vermicularis“ (worm-like) due to the long, crooked and twisted columns which are created when the larger crystals are suddenly heated to high temperatures which liberate the crystalline water.

Exfoliation(peeling of, flaking), i. e. multiple expansion during heating, is a process of thermal expansion by which the crystalline water in the inter-laminar space turns into the steam which enlarges this space several times and separates the laminar layers from each other. Vermiculite chemical formula:The below general formula represents a typical formula, which has been calculated on the basis of 65 vermiculite analyses. (Na0.21,K0.39,Mg,0.19,Ca0.136H2O) (Mg5Fe+20.2Fe+30.8) [Si5.5,Al2.5,O20] (OH)4, where the elements in the first set of parenthesis represent the ion-exchangeable layer, the elements in the second set of parenthesis contain the cations of the octahedral layer, and the elements within the brackets contain the tetrahedral layer. In 2004 the GRENA, a. s. company introduced the first vermiculite exfoliation technology as the first industrial company in the Czech Republic and the Slovak Republic. The line capacity - 2 metric tons per hour. Possible delivery and exfoliation of all the vermiculite types (fractions).

Vermiculite mine

Mine bottom: 230 metres under sea level

Veselí nad Lužnicí, Čs. armády 540, 391 81 Veselí nad Lužnicí, Czech republic www.grena.cz Tel.: 00420 381 549 111 Fax: 00420 381 581 071 e-mail: [email protected]

Veselí nad Lužnicí, Čs. armády 540, 391 81 Veselí nad Lužnicí, Czech republic www.grena.cz Tel.: 00420 381 549 111 Fax: 00420 381 581 071 e-mail: [email protected]

Veselí nad Lužnicí, Čs. armády 540, 391 81 Veselí nad Lužnicí, Czech republic www.grena.cz Tel.: 00420 381 549 111 Fax: 00420 381 581 071 e-mail: [email protected]

Veselí nad Lužnicí, Čs. armády 540, 391 81 Veselí nad Lužnicí, Czech republic www.grena.cz Tel.: 00420 381 549 111 Fax: 00420 381 581 071 e-mail: [email protected]

Veselí nad Lužnicí, Čs. armády 540, 391 81 Veselí nad Lužnicí, Czech republic www.grena.cz Tel.: 00420 381 549 111 Fax: 00420 381 581 071 e-mail: [email protected]

Veselí nad Lužnicí, Čs. armády 540, 391 81 Veselí nad Lužnicí, Czech republic www.grena.cz Tel.: 00420 381 549 111 Fax: 00420 381 581 071 e-mail: [email protected]

Jointing and Assembly Materials

Glued joint detail

Klebepaste Universal glue for higher temperatures up to 1200°C. Characteristic

Grena Klebepaste is inorganic glue which does not release any gases or flammable materials at high temperatures. The glue is water soluble, both glued sides should be protected from water. Soiled tools can be washed in water.

Application

- Before application mix the glue thoroughly and “knead“ the tubes well. - Glued surfaces have to be clean, dry and free of any dust and grease. - Use the glue at temperatures above +10°C. - After application of the glue on one surface, which is to be glued, with a toothed spattle or a “caterpillar“, place the second dry part on the glued side and while applying the circular movement press both parts to each other lightly to fill all possible gaps with the glue. Press both parts tightly for a sufficient time depending on the working environment temperature (for approx. 3 min) and make sure that the glue does not form any skin. When greater amount of glue has been applied, remove the extra amount with the toothed spattle. - The amount of glue applied depends on the type of materials being glued, and ranges from 1 to 1.8 kg/m2. - Glue setting time depends on the surfaces and the type of material being glued and on the amount of glue applied as well. At temperature of 20°C the glue will be set in 12 hours.

Packaging and storage

- The glue is supplied in plastic tubes. Their weight is 1000 grams. - The shelf life is 6 months at minimum, the glue should be stored at temperatures of + 5 to 25°C. The glue irritates skin. Avoid contact with eyes. When the glue gets into the eyes, rinse them out with running water immediately and see the doctor. Use protective wear - suitable clothing, gloves and glasses.

How to apply the glue Veselí nad Lužnicí, Čs. armády 540, 391 81 Veselí nad Lužnicí, Czech republic www.grena.cz Tel.: 00420 381 549 111 Fax: 00420 381 581 071 e-mail: [email protected]

Metal dowel pins

Omega-profiles, capping strip

Z-profile

Fixture with decorative wood screws

Coupling profile for wall and ceiling structures

Aluminium ending profiles

pages 16-17 Jointing and Assembly Materials

REFERENCES

Prague Congress Centre

Villas in Strakonice

Charles Square in Prague

Mercedes, Prague - Chodov

Primary School in Třinec

Veselí nad Lužnicí, Čs. armády 540, 391 81 Veselí nad Lužnicí, Czech republic www.grena.cz Tel.: 00420 381 549 111 Fax: 00420 381 581 071 e-mail: [email protected]

University of Economics, Prague - vestibule, great hall

University of Economics, Prague - great hall and classrooms

Administrative building - Prague - Nové Butovice

Town hall in České Budějovice

REFERENCES

pages 18-19

Veselí nad Lužnicí, Čs. armády 540, 391 81 Veselí nad Lužnicí, Czech republic www.grena.cz Tel.: 00420 381 549 111 Fax: 00420 381 581 071 e-mail: [email protected]