Formwork blocks provide an easy way to build walls and walls. They can be covered or sealed with plaster. The filling plays an important role because it determines the strength and load-bearing capacity of the construction.
Which material is suitable for filling formwork blocks?
Formwork blocks can be filled with fluid concrete, stones, earth or sand. The choice of filling material depends on the function and load-bearing capacity of the structure. Flowing concrete is suitable for load-bearing walls, while soil and stones are recommended for decorative or planted walls.
This is how you can fill formwork blocks:
- Floating concrete: simple and reliable method for resilient concrete walls
- Stones: as filling material for non-supporting structures
- Soil: ideal for stones that are to be planted later
- Sand: is suitable as a gap filler in combination with concrete
flowing concrete
So that the liquid concrete does not seep out of the gaps when filling, you must place the stones close together. A spirit level and a wall cord will help you align the elements vertically and horizontally. If the surface is uneven, we recommend leveling it out with a thin layer of mortar. Then add the reinforcement to make the wall and wall stronger and more resilient.
Filling
Order the required fluid concrete from a supplier. Filling is convenient and easy with the help of a concrete pump, which pumps the mass from the mixer into the formwork blocks. Liquid concrete normally compacts automatically. A wooden stick serves as a poking aid for critical areas in order to manually release air bubbles. The material is resilient within 24 hours and reaches full strength after 28 days.
Stones
Filling with concrete is necessary if the stones are subjected to pressure. Loose materials such as chippings, gravel or gravel are sufficient if the wall is used for decorative purposes and is not subject to the load of earth. If there is no concrete or stone wall crown, the entire structure must be permeable to water. Filling the lowest formwork blocks with concrete is therefore not recommended.
Earth
So-called planting rings or embankment stones, which are open at the top and bottom, prove to be popular and decorative garden elements. These formwork blocks can be flexibly combined and planted. By filling in earth, the structure becomes heavy enough to fortify slopes and withstand the pressure of the earth masses. When stacking, you should make sure that the individual rows are moved slightly back. Part of the wall remains open and provides space for later planting.
Notes
The lowest row of stones is placed in wet concrete, which later serves as the foundation. Since the stones are open, rainwater must be able to seep off the concrete surface. Before setting, create deep grooves in the mixture to drain water. A layer of gravel under the soil promotes good water drainage.
Sand
For smaller walls that do not have any special supporting functions, leftover sand is sufficient to fill gaps. If you want to fill concrete and sand in several layers on top of each other, you must incorporate a waterproof intermediate layer. Otherwise, the sand will draw liquid out of the concrete so that it does not reach its full strength. A piece of cement packaging or a garden pond liner will prove helpful.
