APPLICATION

The ACRYLINJECT ELASTIC B system is used for sealing and consolidation works in presence of water. The substance is injected through packers or injection hoses. The low viscosity of the product assures high fluidity. It’s a hydrophilic system with a controlled set time used in the following applications:

  • Treatment of water infiltration and ground water
  • Treatment of soils
  • Treatment of voids and cavities, in the form of sand
  • Injection of water bearing cracks in concrete or masonry
  • Injection of grout injection hoses.

APPLICATION PRESCRIPTIONS

The following mixtures need to be prepared

Mixture 1:

ACRYLINJECT ELASTIC B Resin (Al) + ACRYLINJECT ELASTIC CATALYST (A2)

Mixture 2:

ACRYLINJECT ELASTIC INITIATOR (Bl) + water (or ACRYLINJECT ELASTIC POLYMER (82))

or

ACRYLINJECT ELASTIC INITIATOR (Bl) + ACRYLINJECT ELASTIC POLYMER (B2)

or

ACRYLINJECT ELASTIC INITIATOR (Bl) + a mixture of water and ACRYLINJECT ELASTIC POLYMER (82)

The mixtures are then mixed in ratio of 1:1

Prepare the mixture of components Al+ A2 and Bl+ water (or B2 or water/B2) in two opaque plastic containers each with a lid. Take an equal volume of each component and check the setting time of the mixture. Adjust the ratio if necessary. The mixture of components Al + A2 is stable for at least a few hours, if kept covered in a cool and dry place even longer. The mixture of component Bl+ water (or B2 or water/82) is stable for a few days below a temperature of 25°C.

Application

For slow setting one can use a mono-component pump. Only prepare amounts that can be injected before the gel sets by mixing one volume of components Al+ A2 and one volume of component Bl+ water (or B2 or water/B2). For all types of setting, the use of a two component methacrylate pump is recommended. Both the mixtures are injected in a volume ratio of 1:1.

Handling

When handling the ACRYLINJECT ELASTIC B system, observe the recommendation set out in the MSDS sheets. Only stainless steel or plastic containers can be used (PVC, polyethylene, polypropylene). Avoid any contact between component A2 and component Bl without having been diluted in their respective mixture (Al+ A2 and Bl+ water (or B2 or water/B2)). The mixtures have to be perfectly homogeneous before use. Do not add more than three volumes of water. Cleaning of equipment water.

HOW DOES ACRYLINJECT ELASTIC B WORK?

The ACRYLINJECT ELASTIC B system is a non-toxic aqueous solution of multifunctional methacrylates. The compound gels in a few seconds to a few minutes when an activator or initiator is added just before use. The final product is a soft, elastic and tacky crosslinked gel. In wet or dry conditions, the volume of the gel increases or decreases in a reversible manner assuring perfect waterproofing

PROPERTIES OF THE INJECTION FLUID

  • Composition

The standard injection fluid is obtained by mixing two mixtures in a ratio of 1:1. However depending on the conditions of the injected substrate the quantity of water present in the injection solution may be up to 3 time the volume of resin.

  • Viscosity

The viscosity of the ACRYLINJECT ELASTIC B solution will depend on the temperature and dilution. It will remain constant up to the setting point.

  • Setting point

Gelling slows down at low temperature but still fast even below o•c. In acid conditions the reaction is slowed down, while under alkaline conditions the reaction is speeded up. The presence of minerals and metals (specially iron and copper) may increase or decrease the rate of setting, depending on their concentration. When immersed in water the unconfined gel can absorb up to 2 times its own weight of water in a few weeks without cracking. Under humid conditions the volume of the gel will remain approximately constant. In the absence of water, the gel will slowly shrink, without cracking. These dimensional changes are reversible and do not degrade the gel. For better control of dry-wet cycles use ACRYLINJECT ELASTIC POLYMER.