Injection method for masonry with cavities

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Hammer drill ROCKET 3
Ø 24 mm

SDS-plus holder shaft, 2 cutting edges

2 Show Variants

Hammer drill ROCKET 3
Ø 25 mm

SDS-plus holder shaft, 2 cutting edges

4 Show Variants

Hammer drill ROCKET 3
Ø 26 mm

SDS-plus holder shaft, 2 cutting edges

2 Show Variants

Hammer drill ROCKET 5
Ø 12 mm

SDS-max holder shaft, 4 cutting edges

3 Show Variants

Hammer drill ROCKET 5
Ø 14 mm

SDS-max holder shaft, 4 cutting edges

2 Show Variants

Hammer drill ROCKET 5
Ø 15 x 340 mm

SDS-max holder shaft, working length 200 mm, 4 cutting edges

Hammer drill ROCKET 5
Ø 16 mm

SDS-max holder shaft, 4 cutting edges

4 Show Variants

Hammer drill ROCKET 5
Ø 18 mm

SDS-max holder shaft, 4 cutting edges

4 Show Variants

Hammer drill ROCKET 5
Ø 20 mm

SDS-max holder shaft, 4 cutting edges

5 Show Variants

Hammer drill ROCKET 5
Ø 22 mm

SDS-max holder shaft, 4 cutting edges

5 Show Variants

Hammer drill ROCKET 5
Ø 24 mm

SDS-max holder shaft, 4 cutting edges

2 Show Variants

Hammer drill ROCKET 5
Ø 25 mm

SDS-max holder shaft, 4 cutting edges

5 Show Variants

Hammer drill ROCKET 5
Ø 26 x 520 mm

SDS-max holder shaft, working length 400 mm, 4 cutting edges

Hammer drill ROCKET 5
Ø 28 mm

SDS-max holder shaft, 4 cutting edges

4 Show Variants

Hammer drill ROCKET 5
Ø 30 mm

SDS-max holder shaft, 4 cutting edges

2 Show Variants

Hammer drill ROCKET 5
Ø 32 mm

SDS-max holder shaft, 4 cutting edges

5 Show Variants

Hammer drill ROCKET 5
Ø 35 mm

SDS-max holder shaft, 4 cutting edges

5 Show Variants

Hammer drill ROCKET 5
Ø 37 mm

SDS-max holder shaft, 4 cutting edges

3 Show Variants

Hammer drill ROCKET 5
Ø 38 mm

SDS-max holder shaft, 4 cutting edges

2 Show Variants

Hammer drill ROCKET 5
Ø 40 mm

SDS-max holder shaft, 4 cutting edges

5 Show Variants

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Injection method for masonry with cavities

Due to a multistage injection in a low-pressure process, cavities, defects and fissures are filled with a shrinkage-free injection mortar via bore packers. Using the same packers, a drill channel is created by a lance. The injection material is then injected by pressure injection (3-5 bar) for better distribution. In this way an optimal effectiveness in the area of the injected masonry can be achieved.

Horizontal sealing / Horizontal barriers
Subsequent injection against capillary ascending moisture

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Objectives

Prevention of moisture flow by capillary action
Moisture content in equilibrium with environment
Prevention of capillary moisture replenishment above the injection zone

Objectives of low-pressure injection

In the case of masonry of homogenous materials
In the case of masonry with a high rate of moisture transport
Consistent and rapid distribution of injection material throughout the masonry

Injection method for masonry with cavities

Advantages

Machine pressure injection contributes to optimal distribution of filling material in masonry
Packer systems and fittings optimized for the technique
Strengthening and stabilization of masonry in the injection area
Low consumption of injection fluid through filling of internal cavities

Types of packers

Bore packers (steel)
Drive-in packers (polymer)

Requirements with regard to Injection and Mixing Equipment

Cross section adjusted to the flow characteristics of the injection material
Pressure controlled and limited to between 1 and 15 bar
Corrosion resistance of all equipment parts vis-a-vis injection material
Homogenous mixing of injection material
Consistent mixing quality
Keeping the injection material in motion
Pump performance and flow suitable to the masonry

Note

The horizontal seal should only be injected above the pressure and water line

Additional information in German: „Injektionsverfahren mit zertifzierten Stoffen gegen kapillaren Feuchtetransport“ WTA Merkblatt E.4-10, Ausgabe 03.2015/D.

Wet-on-Wet Technique and Multistage Injection (INJECTION PASTE AND MICRO EMULSION)

Objectives of the Wet-on-Wet Technique

Filling of the internal cavities to create an injection zone to contain the micro emulsion
Stabilization of the masonry in the area being injected
Increase of alkalinity in the area injected to allow the micro emulsion to react

Filling materials

Injection of paste (step 1)
- to fill cavities and crevices
Injection of micro emulsion (step 2)
- to create a horizontal seal

Objectives of Multistage Injection

In the case of masonry of homogenous materials and a low alkalinity, the chemical reaction is started using an activator

Wet-on-wet technique an multistage injection

Procedure Wet-on-Wet Technique – Step 1

Prepare drilling by marking the positions of holes every 10 to 12.5 cm (4 to 5 inches) then drill and remove dust with a moist cloth or brush
Insert packers, clamp, and attach shut-off pieces
Mix injection paste
Fill the injection pump with mixed material
Inject the drill holes at a pressure of approximately 2 bar (depending on masonry)

Procedure Wet-on-Wet Technique – Step 2

When injection pressure has dropped sufficiently (when material stops flowing out of the shut-off piece) insert the test lance into the packer. The channel for the second injection is ready when the injection paste has hardened enough that the test lance can be withdrawn
Mix micro emulsion and inject into drill holes at a pressure of approximately 5 bar (depending on masonry)

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Injection method for masonry with cavities

Injection method for masonry with cavities

Objectives

Objectives of low-pressure injection

Advantages

Types of packers

Requirements with regard to Injection and Mixing Equipment

Note

Wet-on-Wet Technique and Multistage Injection (INJECTION PASTE AND MICRO EMULSION)

Objectives of the Wet-on-Wet Technique

Filling materials

Objectives of Multistage Injection

Procedure Wet-on-Wet Technique – Step 1

Procedure Wet-on-Wet Technique – Step 2

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