PENTAMIX OS 10 Pentachem presents PENTAMIX OS.10, the premixed - PowerPoint PPT Presentation

PENTAMIX OS 10

Pentachem presents PENTAMIX OS.10, the premixed additive developed to realize osmotic mortars . Thanks to its composition, PENTAMIX OS.10 gives mortars an effect similar to that of a semi-permeable unidirectional membrane: it stops the flow of liquid water while it lets steam pass, thus halting the passage of salts toward the surface as well. Moreover, PENTAMIX OS.10 restores humid walls and it avoids the conditions favorable to the growth of mildew.

How it acts When dissolved in the mixture, the blend of active principles composing PENTAMIX OS.10 bond with the components of the mortar and react to contact with the salts normally contained in the porosities of the walls. This reaction creates new and more stable components, insoluble in water, which crystallize and close the porosities. In 48 / 72 hours, the surface of the mortar lightens, thus removing any visible traces of remaining humidity.

Enlargment of the mortar’s section after 28 days

APPLICATION TESTS

Application tests Conditioned brick in water for 24 h. Surface out of the water is 4-5 mm.

Application tests We applied the osmotic mortar formulated with PENTAMIX OS.10 in two layers directly on the support, without removing it from water. (Apply second layer after the first one has hardened) Total thickness 2/4 mm

Application tests At the end of the hardening process, the active principles of PENTAMIX OS.10 start working on the residual porosities, halting the flow of water and of dissolved salts. After only 24 h , the surface is half-dry.

Application tests After 72 hours , the surface of the osmotic mortar is completely dry.

CHECK TESTS

Check tests After 10 days from the application, we put on the mortar’s surface a cylinder 6 cm in diameter and 100 cm high. We sealed the edge in order to avoid spills of liquids. Then, we fill it with water up to the top.

Check tests After 7 days Drop in the level of water is lower than the absorption capacity of brick, which is 20 % of its weight.

Check tests Water evaporates, but it is not absorbed by the mortar, which does not present traces of the absorption. After 35 days

Check tests After 63 days, the amount of evaporated water is 5,65 g. (at an average temperature of 21°C). After 63 days

Technical data Unit of Type Data measure Determination of flexural and compression strength of N/mm 2 42.0 hardened mortar. – UNI EN 1015-11 Determination of the water absorption coefficient by kg/(m 2 · min 0.5 ) 0.2 capillarity of hardened mortar. – UNI EN 1015-18 Determination of the permeability to water steam of hardened mortars for plasters. – UNI EN 1015-19 – In a μ 10.5 layer of 3 mm on a reference mortar (dehumidifying plaster with μ = 3.6) Determination to the permeability to water steam of hardened mortars for plaster. – UNI EN 1015-19 in layer of μ 24.9 20 mm (as it is) Determination of the adhesion to the support of mortars N/mm 2 0.5 for external and internal plasters. – UNI EN 1015-12

Composition Components % Cement 42.5 R 35.00 Silica sand 0.0 / 0.3 mm 58.50 LEGARAPID 1 H 3.00 PENTAMIX OS 10 2.00 PENTARESIN P3 1.50

Differences in appearance between an osmotic mortar formulated with PENTAMIX OS.10 and a non-osmotic mortar.

Differences in appearance between an osmotic mortar formulated with PENTAMIX OS.10 and a non-osmotic mortar.

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