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Technical Data Sheet
| Product Name |
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NOH2O / SCEM66 |
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| Description |
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NOH2O was designed for the sealing of water with a high velocity washout rate as well as
very high hydrostatic pressure. NOH2O is extremely penetrable and once coagulated,
extremely flexible. Future ground movement or shocks from blasting or excavation will not
result in water leaking again. Sealed single leaks with flow rates of 164L/s and inflows with
pressures of 2900 P.S.I.
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| Code |
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Hazard Identification |
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| XTM2W135 |
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Non Hazardous Substance/Non Dangerous Goods |
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Uses
- Pre-Grouting
- Post Grouting
- Remedial Grouting
- Permeation Grouting
- Reactive Grouting
- Curtain Grouting
- Back wall Grouting
NOH2O has been successfully used in many different environments including the following:
- Geological features – fissures, aquifers, cracks voids
- Water inflows in deep mines (Up to 4km vertical)
- Water ingress into open cut mines
- TBM and lined tunnels
- Underground dam sealing
- Shaft sealing - ventilation shafts / raised boreholes
- Methane gas sealing
- Underground military sites, Silos and bunkers
- Basement parking garages
- Bulkhead sealing
- Underground waste depository sites.
- Retaining walls
- Joint and crack repair
- Ore passes
- Lift wells
- Reservoirs and Dams
- Pipelines
- Water Plugs
- Salt mines - briny conditions
- Hard rock, Soft rock and Sand environments
- Fresh water, Brackish water and Brine.
Advantages
- Extremely penetrating – forms Hydro colloidal solution in water. Particle size less than 1 Micron
- Saves money on drilling costs due to super efficiency of grout spread.
- Viscosity: 2.5 cP (1.5 cP while grouting – miscible in water).
- Does not wash out during grouting – sealed leaks of 164 Lt/second successfully.
- Exceptional performance under high water pressure – successfully sealed static head of 2900 P.S.I.
- Curing can be chemically controlled from as short as 2 seconds to several days.
- Will still set up after dilution in formation water down to <15-25% of original concentration.
- Chemically selective – will seal water in oil wells but not hydrocarbons / crude oil.
- Seals saline and hyper saline water effectively.
- Performs well when pre-grouting shafts declines and pilot holes - due to extreme penetrability.
- Remains flexible once solidified and will not re-leak with ground movement – (>350% elasticity).
- Can be used with ordinary cement effectively to reduce costs.
- Durable – no re-leak occurred during 40+ years of grout history.
- Radiation Tolerant
- Reaction is non - exothermic. No heat generated.
- Safe to work with, Environmentally friendly – Non Hazardous.
Description
- NOH2O/SCEM66 grout is an evolutive solution which is characterised by a steady increase in viscosity,
as soon as the appropriate reagents are mixed.
- NOH2O grout is also a Dilatant Fluid – having shear thickening characteristics which is
particularly handy to control excessive grout spread.
- The NOH2O grout system forms a compound, mixed with different additives to promote flow,
adhesion, and coagulation. The substance at time of injection is a liquid with Specific Gravity
(SG) 0.97 with injection viscosity of 1,5cP.
- NOH2O is a Non – Newtonian fluid, forming a hydro-colloidal solution in water and being
miscible, will continue to disperse and travel where water travels.
- The characteristics of NOH2O grout can be altered by adding one or more of the following
additives to achieve the desired results – controlling the curing times from rapid to delayed:
Atical500 – GIAC-M - InhibitorWP – StabiliserPH – StabiliserC4 – ThickenerKK
Design Properties
| Appearance |
Grey Liquid |
| Tensile Strength @ 100% Elongation |
~1.08 MPA |
| Specific Gravity |
~0.97 |
| Elasticity |
> 350% |
| Viscosity |
2.5cP. (1.5cP during injection) |
| Particle Size |
Less than 1 micron |
Method Of Injection
NOH2O is injected into a water bearing crack or fissure via a hole drilled intersecting the flow. A multiport injector is inserted into the hole through which the NOH2O and/or additives are injected. More than one may be drilled for injection purposes. Generally, in situations where the flow velocity is moderately low, NOH2O will be sufficiently activated by agitation alone - stopping the flow. In high flow situations, chemical activation may be required.
Whereas the addition of activator results in NOH2O grout becoming unstable, followed by rapid
coagulation, the addition of an inhibitor increases the stability, thereby reducing its tendency to
coagulate when subjected to agitation. This enables the grout to be transported for greater distances
through the formation before solidifying. The exact instruction is site specific depending on Lugeon
values, Water Take, and Dye connection tests and will be detailed in the site specific Safe Work
Instruction (SWI)
Limitation
- NOH2O/SCEM66 will degrade under sunlight or severe UV exposure and is therefore not
suitable for surface applications.
- Temperature sensitive – to be transported and stored above freezing.
Storage
- Store in a tightly closed container in a sheltered, cool, dry, and well-ventilated area. Keep away
from heat and flame. Store between 5°C & 35°C. Always keep from freezing.
Technical Support
- Sovereign provides technical expertise and turnkey grouting solutions. Grouting may only be
undertaken by Sovereign trained personnel or Sovereign appointed individuals - Permission
will be given in writing.
- All grouting materials are tailored for specific grout designs and are site specific.
- Only Specialised grout pumps are suitable for NOH2O grouting.
Important Notice
- Please read this TDS with all relevant Safety Data Sheet’s (SDS). Always read the SDS
carefully prior to use. In a medical emergency, contact any Poisons Information Centre or
doctor for advice. Dial 911 in an emergency.
Product Disclaimer
- This Technical Data Sheet summarizes our best knowledge of the product. Sovereign does not
accept any liability either directly or indirectly for any losses suffered in connection with the use
or application of the product whether or not in accordance with any advice, specification,
recommendation or Information given by it.
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