TEC GROUT MC
TEC GROUT MC
MICRO CONCRETE
KEY BENEFITS AND FEATURES
- Selectively graded aggregates blended with select additives to compensate plastic shrinkage and achieve exceptional strength.
- Premixed, Single component- only requires addition of water to obtain free flowing consistency.
- Good flowability ensures easy placement without vibration.
- Controlled gaseous expansion affords excellent dimensional stability ensuring exceptional contact with the parent concrete.
- Can be pumped or poured in areas with poor access.
- Cures to form an intense and impervious mass ensuring high performance over a prolonged periods enhancing concrete life.
- Free of metals and chloride hence prevents corrosion.
- Increased early strength gain vastly reduces downtime for maintenance based repairs.
- High ultimate strength ensures long term durability.
USAGE
- Ideal repair system for extensively damaged concrete members.
- Particularly suited for concrete repairs in areas with poor access.
- Compatibility with various concrete grades ensures usefulness in a variety of concrete repair jobs.
- Ideal for structural strengthening by concrete jacketing with or without reinforcement.
- Microconcrete volume can be extended by addition of 12mm downgraded aggregates by upto 0.75% by weight of Microconcrete.
- Also suited for encasement build-ups.
DIRECTIONS FOR USE
Surface Preparation
All surfaces coming in contact with the Microconcrete must be free of dust, loose particles and other contaminants. Corroded reinforcement should be exposed and all rust and scales removed. Steel should be cleaned to a bright color before application. Ideally Grit Blasting would be advised. In case corrosion has occurred due to the presence of chlorides high pressure water washing is recommended immediately after grit blasting. One break-free coat of Tec Beat ZR should be applied to the reinforcement and if needed a second coat. Concrete surface should be roughened to improve bond. Surface should be saturated with water for several hours prior to placement. Surface should be saturated surface dry (SSD) with no ponding immediately prior to placement. Instead, the prepared concrete substrate may be provided with a bonding coat of TecR Bond EPO epoxy bonding agent. TecR Bond EPO must be applied on a dry substrate. For repair sections exceeding 100mm use of 10-12mm downgraded aggregates, upto 0.75 parts by weight of the Microconcrete is strongly advocated. The quantity of aggregates to be added is a site decision and Techny Tech Team will be delighted to advise you in this regard.
Form Preparation
All forms should be treated with -TecR Release MA- Mould Release compound. Forms should be caulked at all seams which can be done with a trowelable consistency of microconcrete or a caulking compound.
Mixing
Always use potable water. Large quantities should always be mixed in a paddle blade mortar mixer. Small quantities can be mixed with a ½” (1.3 cm) drill with a mixer. The dosage of water shall be 6-8 litres per 50Kg bag of TecR Grout MC (ideal water: powder being 0.16). Always place water into the mixer before adding microconcrete to the mix. After initial mixing, add the prescribed water as needed until reaching the desired consistency. Mix time should be typically 4 minutes to 5 minutes. Only quantity that can be placed in 10-15 minutes should be mixed in each batch. For thicknesses above 100mm TecR Grout MC should be blended with 10-12mm aggregate to ensure reduction in heat generation.
Placement
Microconcrete can be placed by hand or pump. Hand placement should be by one continuous flow from one side. Vibrating of microconcrete should be avoided. Microconcrete must be cured immediately after placement and striking it off. TecR Cure WB is recommended as the curing compound. Proper curing minimizes surface dusting, checking and cracking. Leave forms in place as long as possible to take advantage of the forms for an excellent cure. Proper curing is extremely imperative.
Technical Data
| Physical State | Cementitous Powder blended with 6mm downgraded aggregates |
|---|---|
| Grain Size | 0-6mm |
Yield (of one 50 Kg bag of Tec Grout MC when mixed with 1 Day 2 Days 7 Days 28 Days | 25-28Lts
10 N/mm2 27 N/mm2 38 N/mm2 50 N/mm2 |
Compressive Strength: Mortar Consistency 1 Day 2 Days 7 Days 28 Days |
13 N/mm2 33 N/mm2 43 N/mm2 53 N/mm2 |
| Linear Expansion : Un-restrained | 1-4%% |
| Colour | Grey |
| Coverage | 40 RM/Kg for 6mm groove |
PRECAUTIONS
Direct contact with skin or eyes should be avoided. Use of gloves, goggles and other protective gear is mandatory. In case of accidental eye contact thorough water washing is advised. This should be followed R upwith professional medical assistance. TecR Grout MC is non-flammable.
Storage and Shelf life
TecR GROUT MC must be stored where temperatures do not drop below +8°C.Store under cover, out of direct sunlight and protect from extremes of temperature. Shelf life is 12 months when stored as above. Failure to comply with therecommended storage conditions may result in premature deterioration of the product or packaging.
CLEANING
Tools and equipments can be cleaned with water.
Packaging
Available in 50Kgs HDPE bags
OTHER PRODUCTS
Techny manufactures lot more range of other products for construction and repair applications. They include admixtures for concrete, mortars, block making etc, waterproof and damp proof coating systems, Repair and rehabilitations products, Grouts and Anchors, Protective, Decorative and Corrosion prevention coatings, Epoxy Flooring systems, Industrial flooring systems and Tiling aids. For more details refer Separate Product brochures.
Every reasonable precaution is taken in the manufacture of the Techny products to ensure that they comply with high standards of quality. The recommendations and properties of the products are based upon what is believed to be the most reliable information available and are not intended as recommendations which infringe other patents. Although all Techny products are subject to rigid quality tests, no specific guarantee can be given, because results depend not only on quality but also on other factors beyond our control. We therefore welcome consultation in the event of doubt about application performance etc but do not accept any liability either directly or indirectly arising from the use of the products whether used as per its specifications or advice or otherwise. All transactions shall be subject to our terms of sale, delivery and payment. The leaflet supercedes the previous one and any new issue may take place without notice to supercede this edition as and when it becomes necessary.
TECHNICAL DATA SHEET
REVISED – 01 July 2013
