Mogul slope? Not with us.

The flow-grade concrete repair mortar and levelling compound weber.floor 4640 (class CT-C50-F7) of Weber.

As a levelling compound on concrete substrates or as a repair mortar for holes or defects in concrete substrates, it can be used both indoors and outdoors.

Its advantage: it can be used without problems on surfaces exposed to moisture, frost and de-icing agents.

Substrate preparation

1. Prepare the surface with suitable measures, like chisel out individual holes.
2. Clean the exposed surface well, for ex. with a pressure water jet.
3. The substrate must be solid, load-bearing, dry and free of all adhesion-impairing particles.
4. A pull-off strength of the surface of at least 1.0 N/mm² must be ensured by suitable measures, such as shot blasting or milling. The biggest grain size of the substrate should be exposed.
5. After milling or shot-blasting, sweep or vacuum the surface again so that there are no more adhesion-impairing substances on the surface.

Filling of holes with weber.floor 4640

weber.floor 4640 can be used to repair holes and defects in concrete surfaces.

In the case of medium mechanical loads, it can be used directly or combined with a suitable reactive resin-based coating like weber.floor 4740 or 4741.

Priming

1. Mix the primer weber.prim 802 / weber.floor 4716 with water in a ratio of 1 : 3. Avoid using the primer in its concentrated form!
2. Pour the primer in portions onto the substrate and intensively brush with a soft broom onto the concrete substrate. The use of a roller is expressly not recommended!
3. As soon as the primer has become transparent and dry, the application of weber.floor 4640 can start after maximum 48 hours.
Mixing

When mixing by hand, put the prescribed amount of water into a mixing container. Then add the powder and mix for 2 - 3 minutes with a suitable stirring tool; mix again after a maturing time of approx. 1 minute.
Application

1. Uniformly pour the mixed material on the prepared surfaces and if necessary, distribute with an appropriate tool.
2. Once the right layer thickness is reached, strike off and smooth with an appropriate tool.
Aftercare

Protect freshly installed surfaces from draughts, and the direct effects of sunlight and heat. Outdoors use a curing compound or cover the surface with appropriate foils/sheets.
Result

After approx. 7 days, weber.floor 4640 is open to full traffic. If a reactive resin-based coating should be applied on top, follow the instructions given in refer to the technical data sheet.

weber.floor 4640 as levelling compound

The repair mortar is convenient in a bonded system build-up as levelling compound for concrete substrates, such as courtyards, garages, car parking lots, warehouses, production premises, terraces, carports and cellar rooms.

It is both pumpable and flow-grade, and can therefore be quickly and easily pumped to the job site with the mixing pump m-tec duo-mix 2000.

Primer

1. Mix the primer weber.prim 802 / weber.floor 4716 with water in a ratio of 1 : 3. Avoid using the primer in its concentrated form.
2. The primer is tipped out onto the substrate in portions and intensively brushed with a broom onto the substrate. The use of a roller is expressly not recommended.
3. As soon as the primer has become dry and transparent, the application of the concrete repair mortar and levelling compound weber.floor 4640 can begin after maximum 48 hours.
Mixing

1. Mix the concrete repair mortar and levelling compound weber.floor 4640 with the appropriate water amount. Mechanical mixing is done via a mixing pump approved by Weber (for ex. m-tec duo-mix 2000). Manual mixing is done in a mixing bucket by using an electric drill and an appropriate stirrer (for ex. weber.sys Rührpaddel).
2. In the case of mechanical mixing it is necessary to monitor the consistency regularly via slump test (via 1.3 liter tin, flow ring and flow table). The use of a static post-mixer is necessary.
Application

1. Then the material is uniformly pumped on the floor. If necessary, adjust levelling tripods to the right height.
2. As soon as the required layer thickness is reached, the fresh mortar is beaten through, using the wobbling bar weber Schwebelstange first lengthwise and strongly, then crosswise and somewhat smoother.
Aftercare

Protect freshly installed surfaces from draughts, and the direct effects of sunlight and heat. In outdoor areas use a curing compound or protect with appropriate plastic foils/sheets.