Acrylic-DH509RAcR

APPLICATIONS ACRYLIC-DH509RAcR

• Curtain injections around tunnel segments, drainpipes, porous concrete structures, etc.
• Injection of structures that require strong physical properties of the acrylic gel due to fluctuations in groundwater levels, concrete settling, expansion joints, etc.

PROPERTIES

• The initiator is dissolved in a strengthening polymer blend instead of water. As a result, the acrylic gel has greatly improved physical properties compared to standard acrylic injection resins, such as superior tear
• Low viscosity
• Good general chemical resistance
• Excellent adhesion on mineral building materials such as concrete, cement and brick
• Reacts into an elastic, durable gel
• Does not contain acrylamide, methacrylamide, formaldehyde or solvents
• Non-flammable
• Outstanding water retention capacity: when the injected cracks, fissures and voids dry out due to temperature or groundwater level fluctuations, the gel will not crack easily
• The cured gel has excellent durability in wet-dry cycles

PACKAGING OF ACRYLIC-DH509RAcR  (ACRYLIC RESIN)

MIXING RATIO

TECHNICAL DATA (Typical values)

 This sheet replaces all previous ones. The guidelines are the result of study and experience, and are given in good faith. The organization has no control over the way in which the products are applied or not, and can therefore not be held responsible for the results obtained and any damage. Depending on the evolution of knowledge and techniques Geo constech reserves the right to change the composition and conditions of use of its products without notice.CURED ACRYLATE AT 20 °C

PROCESSING

1. PREPARATION

The DH 509RACR components are supplied ready to use. Create 2 mixtures in separate plastic buckets. Prepare only as much as will be used the same day.

Solution 1: DH 509RACR Acrylic Resin mixed with DH 509RACR Rubber Acryl Catalyst and DH 509RACR Additive

Solution 2: DH 509RACR Initiator mixed with DH 509RACR Strengthener Attention:

When mixing the resin, always use a wooden or stainless steel spatula.

• The reaction time depends on the temperature of the material, the building structure and the possible amount of water present. Higher temperature will speed up the reaction time and lower temperature will slow it
• We advise to make an on-site trial, before injection, to observe and define the reaction
• To change the reaction time, only adapt the quantity of the DH 509RACR Initiator. The quantity of the other components stays the same. Contact your Geo constech representative for longer reaction
• Use a two-component (manual, electric or pneumatic) stainless steel
• Verify that pump and equipment are clean and that no residues from previous injection works are
• The two mixtures are inserted separately in the pump, but are mixed homogeneously in a volume ratio of 1:1 in the mixing head of the pump before being injected through the pump
• Determine the type and dimensions of the packers according to the pump type, slab thickness and type of injection. Remove all items that can obscure the crack so the crack is clearly visible and the drilling patterns for the injection holes can be determined.
• Check the quality of the concrete, as injection implicates pressure

REACTION TIMES AT 20 °C

* This is an approximate value as the volume of the initiator is assumed to be approximately 0.5 Liter. This volume can of course be lower or higher, dependent on the amount of initiator that is used.

** Standard composition

2. DRILL HOLES AND PACKERS

Determine the type and dimensions of the packers according to the pump type, slab thickness and type of 

• If a rebar is present, try to locate it and plan the drill pattern in such way that it minimizes the bit during
• Create a lattice of injection holes
• Distance of the drilled holes depend on the structure and water pressure present.
• For joint sealing through curtain injections, drill the holes in an angle towards the
• Make sure you end up behind the concrete
• Set up a raster of packers. Place the packers in the holes in such way that the top of the rubber sleeve is below the concrete surface

3. INJECTION ACRYLIC RESIN

Start pumping, open the valve on the gun and allow the remaining water that was inside the pump to pass until the resin 

• The injection pressure can vary from low pressure to high pressure method, depending on the
• Holding the pressure line allows the operator to feel the pump’s pulsations. If a pressure gauge is available, the pressure should be monitored and kept in a range that is just enough to allow a good flow of
• Begin the injection from one side to the other and from the bottom
• Continue the injection until resin leaks out from the adjacent packers. This is necessary to get an even material
• Stop pumping, disconnect pressure line and proceed to the next packer.
• Continue the procedure until the area is

4. CLEANING

After the material is cured, packers can be 

• The drilled holes can be covered up with a fast setting mortar, Patch’n Plug.
• Clean and flush the pump equipment with water every time there is a stop of more than 15 minutes. Or whenever necessary and at the end of the injection, flush with an extra ¼ liter
• Make sure that the pump is well cleaned and only stop when clear water is coming out of the

This sheet replaces all previous ones. The guidelines are the result of study and experience, and are given in good faith. The organization has no control over the way in which the products are applied or not, and can therefore not be held responsible for the results obtained and any damage. Depending on the evolution of knowledge and techniques Geo constech reserves the right to change the composition and conditions of use of its products without notice.

STORAGE

In a dry place between + 5 °C and + 25 °C.Storage:

Shelf life:

6 months after production date in the original, unopened and undamaged packaging. If stored at temperatures higher than 25 °C the shelf life cannot be guaranteed.

CE MARKING

For additional documentation, MSD Sheets, instruction videos, sample tests, sample test guidelines, etc. contact our sales department.