2C casting and adhesive resin CERAfix^® 203

The contents of the bag are mixed as follows for all applications:

Suitable protective equipment (safety goggles/face guards, gloves) must be used! The hardener is acidic! Open the third chamber without damaging the first and second chambers. Take out the disposable gloves and screed braces. Pull the round cord out of the securing strip so that the contents of the first and second bag chambers can be mixed together. Thoroughly mix the two matched components for approx. 3 minutes by kneading and churning them. The ready-to-use material is to be mixed evenly and so that there are no streaks. Ensure that the bag is not damaged during mixing. Put on the gloves. Then open the screw cap and, where necessary, push on a piece of the plastic hose. Then squeeze out the material and apply immediately.

1. Sealing cavities:

• Drill or expose the cavity. The air must be able to escape from the cavity, so a second ventilation drill hole must be drilled


• Then thoroughly clean and remove dust from the area


• Then pour the mixed casting resin into the cavity in portions. Subsequent casting may be required. Material requirement: 1.1 kg/l volume

2. Sealing cracks:

• Open the crack and cut perpendicular to the crack at a distance of 15 to 20 cm; use a cutting disc to cut a depth of 1/2 to 2/3 of the screed thickness. The transverse slots should be positioned so they are central to the crack and should be approx. 10 cm in length


• Then thoroughly clean and remove dust from the area. It is recommended that the area be carefully cleaned of dust using an industrial vacuum cleaner


• Then pour the mixed resin into the crack and cutting joints in portions until it is visibly saturated. To extend the run-out, a piece of the enclosed plastic hose can be pushed on


• Then insert the screed braces into the transverse slot and evenly spread the emerging resin on the surface


• After approx. 30-45 minutes, spread fresh quartz sand with a grit of 0.2-1.0 mm diameter on top of the resin


• Once cured, mop and vacuum the loose sand

3. Priming:

• Prepare and clean the substrate according to the surface specifications


• Pour the mixed resin onto the substrate and spread evenly until saturation is visible


• After approx. 30-45 minutes, spread fresh quartz sand with a grit of 0.2-1.0 mm diameter on top of the resin


• Once cured, mop and vacuum the loose sand

4. Repairing chips:

• Prepare and clean the substrate according to the surface specifications.


• Then prime the area accordingly.


• A mortar is produced as follows to repair chips: For repairing greater crack depths, a mortar is made from CERAfix 203 bonding agent as follows: First add the quartz sand to the mixing bucket; then add the mixed resin. 1 mass part CERAfix 203: 7-10 mass parts quartz sand. Then mix together evenly. The quartz sand grit is matched to the coat thickness to be applied. The minimum coat thickness equates to approx. three times the largest grain size. The maximum coat thickness equates to approx. ten times the largest grain size. For example: The quartz sand used has a grit of 0-2 mm diameter. As a result, a mortar can be produced that can be applied in coat thicknesses of approx. 6-20 mm.


• Apply, compress and smooth the mixed mortar onto the freshly primed surface. Then immediately spread quartz sand with a grit of 0.2-1.0 mm diameter over the freshly laid mortar. Required: approx. 2.0 kg mortar per 1 m² and 1 mm coat thickness.

5. Scratch fillers:

• Prepare and clean the substrate according to the surface specifications


• Then prime the area accordingly


• Produce the mortar for filling scratches as follows: First add the quartz sand with a grit of 0.2-1.0 mm diameter to the mixing bucket; then add the mixed resin. 1 mass part CERAfix 203: 1-2 mass parts quartz sand. Then mix evenly


• Apply the mixed filler in a single pass using the scratch filling technology. Required: approx. 1.6 kg mortar per 1 m² and 1 mm coat thickness


• Then immediately spread fine quartz sand with a grit of 0.2-1.0 mm diameter over the freshly laid filler.

Surface:

The base material must be solid, load-bearing, clean, dry and free from separating substances. Separating materials or layers, such as layers of sinter, dust, oil, paints etc., must be removed with suitable measures such as blasting, milling, sanding, suction and/or degreasing. The substrate must have sufficient load-bearing capacity for the active loads - refer to DIN 1055. With screeds on separating or insulating layers, you need to check how mature the covering is before applying CERAfix 201. Concrete must comply with a minimum compressive strength of C20/25 in accordance with DIN 1045. Screed must meet class C25-F4 in accordance with DIN EN 13813 as a minimum and must have been in place for 28 days. The moisture content in line with the CM method must be less than 4 CM% for cement-based surfaces. For calcium sulphate screeds without underfloor heating, the CM moisture content must not exceed 0.5 CM%. For calcium sulphate screeds with underfloor heating, it must not exceed 0.3 CM%. Observe the prescribed residual moistures for subsequent coverings. When doing so, ensure that the permitted residual moisture content is observed in accordance with current technical leaflets. The CM measurement must be conducted in accordance with the current work instruction "Interface coordination for heated floor constructions". Subsequent moisture ingress must be prevented. During application and in the week after, the air, material and substrate temperature must be at least +8°C.