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Cement and Epoxy Combination Micro Mortar for Surface Sealing

PRODUCT DESCRIPTION Tasir®- EpoCem01 is a three part, epoxy modi- fied cementitious, thixotropic, fine textured mortar for levelling and finishing of concrete, mortar or stone sur- faces. USES ▪ As a levelling layer over concrete and mortars in 0.5–3 mm on vertical or horizontal surfaces. ▪......

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PRODUCT DESCRIPTION

Tasir®- EpoCem01 is a three part, epoxy modi- fied cementitious, thixotropic, fine textured mortar for levelling and finishing of concrete, mortar or stone sur- faces.


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USES

▪ As a levelling layer over concrete and mortars in 0.5–3 mm on vertical or horizontal surfaces.

▪ Application in new works or damaged concrete, in aggressive chemical environments

▪ Application over high moisture content substrates, even green concrete

▪ As a Temporary Moisture Barrier (TMB) (min. 2 mm thick) allowing the application of Epoxy, Polyureth- ane and PMMA* resin coatings requiring dry sub- strates, for a lasting solution.

▪ As a pore sealer for the reprofiling, smoothing and levelling of concrete surfaces

▪ Suitable for moisture control (Principle 2, method 2.3 of EN 1504-9)

▪ Suitable for restoration work (Principle 3, method 3.1 and 3.3 of EN 1504-9).

▪ Suitable for physical resistance (Principle 5, method 5.1 of EN 1504-9)

▪ Suitable for preserving or restoring passivity (Prin- ciple 7, method 7.1 and 7.2 of EN 1504-9)

▪ Suitable for increasing resistivity (Principle 8, meth- od 8.3 of EN 1504-9)

* See Notes on Application / Limitations

 

CHARACTERISTICS / ADVANTAGES

▪ Improved chemical resistance compared to PCC mor- tar

▪ Excellent protection of concrete in aggressive envir- onments

▪ CE marked in accordance with EN 1504 parts 2 and 3

▪ Impervious to liquids but permeable to water vapour

▪ Excellent bond to green or hardened concrete whether damp or dry

▪ Fast overcoating of Tasir® resin based finish products

▪ Ideal preparation for smooth surface finishes

▪ For internal or external use

▪ Contains no solvents

▪ Can be applied by hand or mechanically


PRODUCT INFORMATION

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TECHNICAL INFORMATION

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SYSTEM INFORMATION


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APPLICATION INFORMATION

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SUBSTRATE QUALITY / PRE-TREATMENT

The concrete substrate must be sound and of suffi-cient compressive strength (minimum 25 N/mm2) with a minimum pull off strength of 1.5 N/mm2.

The substrate can be damp but must be free of stand- ing water and free of all contaminants such as oil, grease, coatings and surface treatments etc.

If in doubt, apply a test area first.

Concrete substrates must be prepared mechanically using abrasive blast cleaning or scarifying equipment to remove cement laitance and achieve an open tex- tured surface.

Weak concrete must be removed and surface defects such as blow holes and voids must be fully exposed. Repairs to the substrate, filling of blowholes/voids and surface levelling must be carried out using appropri- ate products from the Tasir®-floor, Tasir®-durarable and Tasir®-guard range of materials.

All dust, loose and friable material must be com- pletely removed from all surfaces before application of the product, preferably by brush or vacuum.


MIXING

Prior to mixing, shake part A (white liquid) briefly until homogenous, then pour into the container of part B and shake vigorously for at least 30 seconds. When dosing out of drums, stir and homogenise first.

Pour the mixed binder (A+B) into a suitable mixing container (capacity of about 30 litres) and gradually add part C while stirring with a power mixer. Mix thor-oughly for 3 minutes until a uniform mix has been achieved, with no lumps.

Mix only full units of A+B+C components. Do not mix smaller amounts. Do not add water.


MIXING TOOLS

Mix using a slow speed electric mixer (300 - 400 rpm) with helical paddle or other suitable equipment.

For mixing 2–3 bags at once, single or counter rotating double mortar (basket type) and forced action (pan type) mixers are also suitable. Free fall mixers must not be used.


APPLICATION

Hand application:

Place mixed Tasir®- EpoCem01 onto the matt- damp substrate and spread evenly to the required thickness with a trowel or spatula. If necessary, it may be finished with a moist neoprene sponge or brush.

Mechanical Application:

Placement on to the surface can also be done using a hopper gun or wet spray technique. For example an Aliva Hopper gun, a Putzmeister S-5 or a Graco T-Max 405. Subsequent finishing by hand is required.

Do not use additional water, which would disturb the surface finish and cause discolouration.

Freshly applied Tasir®- EpoCem01 must be pro- tected from rain for at least 24 hours.

Once Tasir®- EpoCem01 is tack free it is possible to apply vapour permeable seal coats. Always verify that surface moisture < 4 % when applying vapour tight coatings.

A seamless finish can be achieved if a “wet” edge is maintained during application.

Note:

Tasir®- EpoCem01 can be applied on green or damp concrete, without any standing water.

Although the product can be applied onto green con- crete surfaces (> 24 hours), it is advised to allow at least 3 days for early shrinkage of concrete to occur in order to prevent concrete shrinkage cracks from ap- pearing on the screed/render surface.


CLEANING OF TOOLS

Clean all tools and application equipment with water immediately after use. Hardened / cured material can only be mechanically removed.


LIMITATIONS

▪ Always ensure good ventilation when using Tasir®- EpoCem01 in a confined space, to re- move excess moisture.

▪ Freshly applied Tasir®- EpoCem01 must be pro- tected from damp, condensation and water for at least 24 hours.

▪ For external applications, apply primer and Tasir®- EpoCem01 on a falling temperature. If applied during rising temperatures “pin holing” can occur.

▪ Non moving construction joints require pre-treat- ment with a stripe coat of primer and Tasir®- EpoCem01. Treat as follows:

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▪ The incorrect assessment and treatment of cracks can lead to a reduced service life and reflective crack- ing.

▪ Colour variations can occur on unsealed Tasir®- EpoCem01 through exposure to direct sun light. This however, will not influence the mechanical prop- erties.

▪ When overlaying with PMMA screeds, the surface of Tasir®- EpoCem01 must be fully broadcast with sand 0.4–0.7 mm.

▪ The TMB effect in Tasir®- EpoCem01  is limited in time, without additional preparation.

▪ Always verify the surface moisture content if more than 5–7 days have passed since application.


VALUE BASE

All technical data stated in this Product Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstances beyond our control.


LOCAL RESTRICTIONS

Please note that as a result of specific local regula- tions the performance of this product may vary from country to country. Please consult the local Product Data Sheet for the exact description of the application fields.


ECOLOGY, HEALTH AND SAFETY

For information and advice on the safe handling, stor- age and disposal of chemical products, users shall refer to the most recent Safety Data Sheet (SDS) containing physical, ecological, toxicological and other safety-re-lated data.


LEGAL NOTES

The information, and, in particular, the recommendations relating to the application and end-use of TASIR products, are given in good faith based on TASIR's current knowledge and experience of the products when properly stored, handled and applied under normal conditions in accordance with TASIR’s recommendations. In practice, the differences in materials, substrates and actual site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability arising out of any legal relationship whatsoever, can be inferred either from this information, or from any written recommendations, or from any other advice offered. The user of the product must test the product's suitability for the intended application and purpose. TASIR reserves the right to change the properties of its products. The proprietary rights of third parties must be observed. All orders are accepted subject to our current terms of sale and delivery. Users must always refer to the most recent issue of the local Product Data Sheet for the product concerned, copies of which will be supplied on request.


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