Multistage injection - masonry with hollows and voids

Increasingly, cellar rooms are used as living space. Very often it becomes necessary to professionally seal humid walls in order to meet this high quality standards. This can be achieved by masonry injections for subsequent sealing against capillary ascending moisture. The capillaries in the building material will be interrupted and the content of moisture will be reduced. More information: "Injection of Masonry in order to avoid Capillary Moisture Content” acc. to WTA 4-4-04/D and „subsquent sealing of building components", who stand in contact with the ground.

Ranges of application	Application of the steps	Execution
Masonry with voids	Combination of step 1 (injection paste) and step 2 (micro emulsion)	1. Injection of injection paste (step 1) • Filling of voids • Stabilization of masonry 2. Injection of micro emulsion (step 2) after the injection paste starts to set • Creation of the horizontal sealing
Homogeneous brick masonry	Step 2 (micro emulsion)	Injection of micro emulsion • Creation of the horizontal sealing
Homogeneous brick masonry with low alkalinity and percentage of moisture > 80 %	Combination of step 2 (micro emulsion) and step 3 (activator)	1. Injection of micro emulsion Creation of the horizontal sealing 2. Subsequent injection of activator to activate the micro emulsion

Ranges of application

Application of the steps

Execution

Masonry with voids

Combination of
step 1 (injection paste) and
step 2 (micro emulsion)

1. Injection of injection paste (step 1)

• Filling of voids

• Stabilization of masonry

2. Injection of micro emulsion (step 2)
after the injection paste starts to set
• Creation of the horizontal sealing

Homogeneous brick masonry

Step 2 (micro emulsion)

Injection of micro emulsion

• Creation of the horizontal sealing

Homogeneous brick masonry with
low alkalinity and percentage of
moisture > 80 %

Combination of
step 2 (micro emulsion) and
step 3 (activator)

1. Injection of micro emulsion

Creation of the horizontal sealing

2. Subsequent injection of activator to
activate the micro emulsion

Advantages

Stabilization of masonry within the injection area
Low need of injection liquid due to filling of voids
Less accessories necessary, e. g. low wear of drill and need of packer
Less working time per meter

Sequence of operations

Step 1

Mark boreholes and drill them. Remove bore dust and pre-wet the bore holes if necessary
Place packer, clamp them, and mount locking tappets
Mix injection paste
Fill injection paste into injection device
Inject the boreholes at an injection pressure of about 2 bar (depending on the building component)

Step 2

After the injection pressure has been released (material does not come out of the locking tappet any more) insert the test lance in the packer. The second injection channel is created by removing the test lance only after the injection paste starts to cure.
Mix micro emulsion and inject it at an injection pressure of about 5 bar (depending on the building component).

Ihr Konto

Registrierung