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Minova CarboTech GmbH Am Technologiepark 1 D-45307 Essen Tel: +49 (0)2 01/1 72-10 38 Fax: +49 (0)2 01/1 72-13 17 Email info@minova-ct.com www.minova-ct.com

Tunnelling and Civil Engineering CarboPur WX

Technical Data Sheet Uses

Slow reacting two-component injection resin, free of CFC and halogens, used for sealing and stabi-lising of water bearing zones. Long pot life, but accelerated curing as soon as in contact with water. ° Stabilisation in wet or water-bearing rock formations ° Sealing of water tributaries (incl. salt water) from rock formations, from dams or shaft walls ° Renovation of wet shafts, tunnels, sewers or brickwork ° many other specialised applications Applicable at ambient temperatures of between 0 and 40°C. Applicable with pumps or cartridges in one or two-component processing. Technical Data

The data below are laboratory data. They may vary in practice due to thermal exchange between resin and strata, surface properties of the stone, humidity, pressure, and other factors Reaction Data

Without water

contact With 1% water

(relating to blend) With 2% water

(relating to blend) Test Procedure

Ambient temperature 15 °C 25 °C 15 °C 25 °C 15 °C 25 °C

Start of foaming - - 7'00"± 60" 4'40"± 30" 4'20"± 30" 2'15"± 30" MCT PV 10-301

End of foaing/Setting time

-/approx. 4 hours

-/approx. 3 hours 60' ± 10' 25' ± 5' 30' ± 5' 13'00" ± 4' MCT PV 10-301

Pot life at 23°C - 30' ± 5' - - - -

Foaming factor 1.0 – 1.1 1.0 – 1.1 1.0 – 3.0 1.0 – 3.0 1.0 – 3.0 1.0 – 3.0 MCT PV 10-301

After contact with water CarboPur WX will be foaming strongly.

The curing process can be accelerated by addition of max. 25 % CarboAdd WX to Component A. Thereby the bundle working time shortens.

Curing time of CarboPur WX (without water added) with various amounts of CarboAdd WX

(Liter CarboAdd WX on 20 Liter CarboPur WX Comp. A)

060

120180240300360

0 1 2 3 4 5

CarboAdd WX [ l / 20 l ]

C/T

[min

]

EZ, 10°C

EZ, 15°C

EZ, 20°C

Material Data

Component A Component B CarboAdd WX Standard

Density at 25° C kg/m3 1023 ± 10 1235 ± 30 1024 ± 10 DIN 12791

Colour honey dark brown honey

Flash point °C > 200 > 200 > 200 DIN 53213

Viscosity at 25° C mPa*s 250 ± 50 200 ± 40 245 ± 50 ISO 3219

Viscosity at 15° C mPa*s 520 ± 50 500 ± 50 510 ± 50 ISO 3219 Composition and Properties Components: CarboPur WX, Comp. A is a mixture of various polyols and additives which reacts with the B-component to form a tough/hard polyurethane resin. CarboPur, comp. B is a polyisocyanate on the basis of 4,4'-diphenylmethane diisocyanate (MDI). CarboAdd WX is an accelerator promoting the gelling reaction. System: The mixed resin penetrates the structure to be sealed. The major part of water in there is displaced due to the hydrophobicity and the viscosity of the resin. Traces of water, either by purposeful addition or from the water in the ground, accelerate the reaction and make the resin foam. Final Product : The foam is tough-hard and, thus, capable of following movements in the ground to some extent. Due to the inertia of the material and of the absence of toxic reactions, there are no objections against Car-boPur WX in contact with ground or surface water.1

Processing In a volume ratio of 1:1, both components are - either mixed in a suitable clean and dry container by means of an effective stirrer and then introduced

into the injection area by means of a one component pump. In dry ground, the curing can be acceler-ated by pre-injecting water .Only applicable without addition of CarboAdd WX

- or pumped separately via a two-component pump, then passing a static mixer and being injected into the rock formation through a bore hole packer. The product can also be applied with a double cartridge applicator gun. The resin can be accelerated by adding CarboAdd WX (cf. chart).

Detailed information can be found in „Directives for the use of CarboTech injection resins in tunnelling and civil engineering“. Recommendation:

Technical Data Sheet CarboPur WX Page 2 of 3

Technical Data Sheet CarboPur WX Page 3 of 3

We recommend that before processing, the product be stored for at least 12 h at a minimum temperature of 15 °C to achieve the recommended processing temperature of between 15 to 30 °C. When the material is warmed up, local overheating, e. g. at the container wall, must be avoided by any means. Risk and Safety Phrases for the Handling of CarboPur WX and CarboAdd WX Observe the general safety regulations when handling chemicals. Component A: The product is not subject to identification regulations under EU Directives and the Ordinance on Hazardous Materials (German GefStoffV). S26 In case of contact with eyes, rinse immediately with plenty of water. S28 After contact with skin, wash immediately with plenty of soap and water. S37/39 Wear suitable gloves and eye/face protection. Component B: Symbol: Xn (harmful), contains isocyanate R20 Harmful by inhalation. R36/37/38 Irritating to eyes, respiratory system and skin. R42/43 May cause sensi-tization by inhalation and skin contact. S23e Do not breathe spray. S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S28 After contact with skin, wash immediately with plenty of water. S36/37/39 Wear suitable protective clothing, gloves and eye/face protection. S38 In case of insufficient ventilation, wear suitable respira-tory equipment. S45 In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). CarboAdd WX: The product is not subject to identification regulations under EU Directives and the Ordinance on Hazardous Materials (German GefStoffV). S26 In case of contact with eyes, rinse immediately with plenty of water. S28 After contact with skin, wash immediately with plenty of soap and water. S37/39 Wear suitable gloves and eye/face protection. Packaging All forms of packing are approved to the danger goods regulation road (German GGVS). The quantities of the individual components correspond to the mixing ratio (1 : 1 by volume). Component A Component B CarboAdd WX 20 kg in a tin can 24 kg in a tin can 5 kg in a can 20 kg in a can

Other packing units on request. Storage, shelf life: At least six months from date of delivery or twelve months from date of production when stored in a dry place between 10 and 30 °C. When this time is exceeded, we recommend having the material checked by Minova CarboTech for compliance with specification. The local legislation on storage has to be observed. Disposal: Follow local regulations. We recommend either to dispose of liquid residues in an incineration plant (EU disposal code 08 04 10 resp. 08 05 01) or to cure the liquids and dispose of the cured foam in a domestic waste landfill or an incineration plant (EU disposal code 20 01 39). Empty cans should be cleared of liquid by punching a hole through the edge of the cover and turn them upside down, until no liquid flows out any longer. Expertise and Test Reports 1 Expertise on groundwater compatibility (Hygiene-Institut, Gelsenkirchen, 2002) The data in this sheet conform to our best knowledge and experience at the date of printing, which is indicated below. The state of knowledge and experience are evolving constantly. Please pay attention therefore, that you always refer to the current ver-sion of this data sheet. The description of the product application in this sheet cannot take the special conditions and circumstances into account emerging from the individual case. Please check our product therefore in any case prior to use for its aptitude in the actual application. Application, use and processing of our product occur outside of our control capabilities. That is why they as well as the processing result achieved based on our information are exclusively subject to your own responsibility. No data in this sheet constitute a guarantee in a legal sense. It is clarified that our liability is limited to the contractual ac-knowledgements for the purchase of this product. 101803/110401/111603/CarboPur WX#e14 of September 2007