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CM 920 Design

CM 920 Design is a is polymer modified and pigmented pumpable self-levelling compound.

The CM 920 Design is suitable for new construction and renovation. The product is intended for indoor use on concrete and other hard substrates. The product may be used as an wear surface* in fx. domestic areas, offices spaces or shopping malls. * Color deviations of the product may occur.

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Productspecificatie

Technische data
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Vrijgave van corrsive stoffen

CT

Druksterkteklasse

C30

Druksterkte gemiddelde

32 MPa

Buigsterkte klasse

F6

Buigsterkte gemiddelde

7,5 MPa

Brandwerendheidsklasse

A1fl

RWA

100

Hechting aan oppervlakte

B1.5

Dikte 1

8–20 mm

Korrelgrootte

≤ 2 mm

Materiaalverbruik

1.7 kg/m²/mm

Gewicht (droge toestand)

1700 kg/m³

Water behoeften

4,6–4,9 l/20 kg

Debiet

max 140 mm (white), max 145 mm (other colors)

Bedrijfstemperatuur

10–25 °C

Mengtijd

2+1 min

Werktijd

15–20 min

Final set

approx. 2 hrs

Bedekbaar (tegels)

6–12 hrs

pH

approx. 11,5

Waterschade resistant

yes

Inkrimping

≤ 0,03 %

Verpakking
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92005-4

Svart 20 kg

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Svart 1000 kg

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Gebruik

Pre-behandeling
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The substrate should be clean and free of dust, cement skin, grease and other impurities that can prevent adhesion. Adhesion and surface resistance of the substrate should be no less than 1.5 MPa. Always prime the underlying substrate with PP 600 and allow to dry before pouring. In terms of the primer forming a film, the temperature of the substrate must not fall below 10 °C. For best results, the ambient temperature in the work area should be between 10 and 25 °C. At higher or lower temperatures, the time for curing will shorten or extend. With the risk for cracks due to shrinkage or settings in the subfloor, a concrete surface should not be leveled within the first 28 days after casting. As a recommendation the RH in the concrete should have reached RH 90 % as the upper limit for pouring the CM 920 Design. Use the Combimix form foam for edging. In order to avoid drainage pipes from getting clogged, always make sure the drains are properly sealed before pouring.

Menging
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Mix the dry powder with 4.6–4.9 liters of water (23–24 %) per 20 kg bag. Mix with a drilling machine and a whisk, or a mixing pump intended for this purpose. The correct water mixture can be tested using a slump test with a cylinder with Ø 30 mm and a height of 50 mm on a 300 x 300 mm plexiglas plate. With the correct water mixture, the spread should be max 140 mm for the white and max 145 mm for the other colors. The slump test also checks that the material is well blended and that there is no separation.

Toepassing
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The mixed material is applied by hand, or pumped out onto the substrate in lengths. Each new ribbon is added to the old one as soon as possible so that the material can blend together and create an even surface. The width of the ribbons can be adjusted to the capacity of the mixing pump and the thickness of the covering. The material requires a light treatment with a trowel to provide maximum smoothness.

Post -behandeling en uitharden
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You can easily shape or cut the semi-hardened self-leveling underlayment material before it fully dries. The product is paintable with epoxi or similar after 3–5 days depending on the thickness. Always make sure that the material is sufficiently dry before it gets overcoated. The guiding value assumes a curing temperature of approximately 20 °C, 40 % RH and proper air flow.

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CM 920 Design

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+46 20 21 21 00

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Neem contact met ons op

  • Verkstadsvägen 6
  • 746 40 Bålsta, Zweden
  • Tel. +46 171 46 65 90
  • Fax. +46 171 46 65 99
  • E-mail: info@combimix.com

Combimix

Combimix ontwikkelt en produceert minerale producten voor de bouw. Ons assortiment omvat producten voor vloer egalisatie, gevelbepleistering, rendering, beton resurfacing en restauratie mortel voor culturele gebouwen. We verkopen in Zweden, Denemarken, Noorwegen en de Verenigde Staten.

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