Acrylic-DH509RAcR

Description

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)

RESINADDITIVECATALYSTINITIATORSTRENGTHENER
24.910 KG0.09 KG2.50 KG0.625 KG23.7 KG

MIXING RATIO

TECHNICAL DATA (Typical values)

SOLUTION 1SOLUTION 2
 

1:1 by volume

DH 509RACR Resin with

DH 509RACR Additive and DH 509RACR Catalyst

 

DH 509RACR Initiator with DH 509RACR Strengthener

  

 

RESIN

 

ADDITIVE

 

CATALYST

 

INITIATOR

 

STRENGTHENER

 

MIXTURE

Appearance 

Purple-pink liquid

Clear transparent liquid 

Pale yellow liquid

 

White powder

 

White liquid

 

Whitish pink

Viscosity (20 °C) 

18 mPas

 

5 mPas

 

7 mPas

 

25 mPas

 

20 mPas

Density1.173 g/cm30.931 g/cm31.04 g/cm31.019 g/cm3± 1.09 g/cm3
PH5 – 610 – 1111 – 127 – 8
Solid matter

content

 

42% – 48%

 

40% – 43%

 

40% – 50%

Fully miscible with water 

Yes

 

Yes

 

.Yes

 

Soluble

 

Yes

CorrosivenessNon-corrosive
Pot LifeAdjustable and dependent on the amount of Initiator

 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

SOLUTION 1SOLUTION 2
ResinAdditiveKatalysatorInitiatorStrengthener
 

Kg

 

Liter

 

Kg

 

Liter

 

Kg

 

Liter

 

Kg

 

Kg

 

Liter

Reaction time at 20

°C

24.91021.2360.090.09672.502.3951.2523.723.25828 sec
24.91021.2360.090.09672.502.395123.723.25836 sec
24.91021.2360.090.09672.502.3950.7523.723.25844 sec
24.91021.2360.090.09672.502.3950.62523.723.25856 sec**
24.91021.2360.090.09672.502.3950.523.723.2581 min 12 sec
24.91021.2360.090.09672.502.3950.2523.723.2582 min 12sec

* 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.

PRECAUTIONS AND SAFETY

RECOMMENDATIONS

Protect the products against UV and sunlight.
Don’t use water that contains a lot of minerals for the preparation of solution 2. The minerals can accelerate the gel reaction.
Wear safety glasses, gloves and protective clothing. Avoid contact with skin and eyes.
In the event of contact with eyes: rinse thoroughly with clean water and consult a doctor.
In the event of contact with skin: wash with lots of water and soap. Rinse well afterwards.
Mix residues of DH 509RACR with sand or sawdust and dispose the mixed material in accordance with local regulations.
Consult the SDS sheet.

CE MARKING

 

 

0749

ECC N.V.

Terbekehofdreef 50-52 B-

2610 Wilrijk

 

09

 

0749 – CPD

BC2-565-1895-0004-001

EN 1504-5

U(S1) W(1) (1/2/3/4) (5/30)

Concrete injection product for swelling fitted filling of cracks

Watertightness under pressure≥ 2 x 105 Pa
Workability – Viscosity≤ 60 mPas
Corrosion behaviorDeemed to have no corrosive effect
Expansion ratio and evolution by water storageVolume change after 20 days immersion in water at 21 °C : ± 120 %
Durability – Sensitivity to waterThe expansion reaches a constant level after

20 days

Durability – Sensitivity to wet-drying cyclesNo modification of the expansion ratio
Durability – Compatibility with concretePass
Dangerous substancesComply with 5.4

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

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