Floor Tenax SFR
Floor Tenax SFR has a workability time of approximately >120 minutes, after which the gripping process is triggered followed by a progressive hardening. The hygrometric shrinkage is extremely limited, guaranteeing volumetric stability to restoration carried out. The performances that make Floor Tenax SFR unique are:
• resistance to dynamic stress,
• fatigue resistance, fracture energy, toughness and resistance to post-breaking strain,
• very high mechanical compression strength (> 95 MPa at 28 days),
• very high mechanical tensile and bending strength (> 15 MPa at 28 days),
• excellent durability and resistance to chemical attacks.
Recommended maximum thickness: 25 mm (flooring) 50 mm (casting in formwork)
Minimum recommended thickness: 5 mm (flooring) 25 mm (casting in formwork)
Fields of application
Floor Tenax SFR is used in in structural reinforcements and repair of deteriorated floorings with limited thickness (typical applications
in the range 8 - 20 mm), characterised by high performance in terms of deformation, resistance and anti-cracking resistance. The main application fields are:
• repair of industrial concrete floors with walkability allowed after approximately 24 hours from casting and drive over allowed after 48-72 hours depending on the temperature at the time of application
• repair of joints in industrial flooring;
• laying and fixing of manhole covers;
• reinforcement of floors with the low thickness estradossal hood technique;
• any kind of structural repair and restoration performed with casting within formwork such as for example the cladding of pilates and beams; in this case the maximum recommended thickness can be up to 40-50 mm (for higher thicknesses we recommend the addition of Ghiaietto 6.10 with addition percentages that can vary from 20 to 40%; in these cases ask our service technical advice on the correct addition percentages).
• regularization of radiant flooring substrates with coatings starting from 5 mm thick (recommended thickness from 5 to 10 mm), characterized by high values of thermal conductivity and reduction of shrinkage.
Preparation of supports
Application surfaces must be clean, free of dust, contamination, crumbling, inconsistencies, etc., and adequately saturated-surface-dry with water.
Mode of use
• The support must be prepared by mechanical scarification or hydro-scarification for a depth of not less than 6 mm. The scarification of the support is an absolutely necessary operation to ensure sufficient grip of the coating applied. In the case of localized patches or repairs, cut the contours at right angles with an angle grinder.
• The support must not have traces of oils, greases, detergents.
• The support must be in good condition, clean, course, without crumbling parts or dust (suction of all dust and debris with an adequately equipped vacuum system). Wash the surface with pressurized water. Saturate the support with water before applying and eliminate any excess water on the surface.
• Application temperature: 5°C to 30°C.
• We strongly recommend the use of a vertical axis mixer with planetary or double horizontal helical movement, both for effective mixing of fibre-reinforced reinforcement and for optimal performance of site operations.
• MIXING: mix the entire contents of the bag with potable water in the measure of 11% - 12.5% referred to the total weight of the mortar (about 2.75 - 3.13 lt per 25 kg bag) creating a homogeneous mixture. Mixing time: approximately 4 minutes with high-efficiency mixer.
• In the case of large thicknesses (e.g.: manhole repairs) use compaction with a vibrating needle or tamp it down in a very intense way.
• Level the surface with a vibrating screed on the prepared templates.
• The surface must be protected after application by polyethylene sheets or anti-evaporation
treatments. The latter should be sprayed on the restored surface as soon as the hardening phase begins (provide anti-evaporation treatments only if no other protective or aesthetic-protective applications are planned above: contact our technical service for advice on the most indicated surface protection methods and on the type of product that can be used as a curing compound).
In the case of thicknesses exceeding 20 mm, Floor Tenax SFR must be laid out, supported and floated on a suitable sub-base only with appropriate measures to ensure the structural adhesion and anchoring to the support itself. The methods of anchorage suggested include: laying with a special epoxy resin for structural construction joints (Syntech RGS or Syntech Pavisheer); or positioning a galvanized steel net with 5x5 cm mesh and 2 mm wire, which is spaced from the support plane of half the expected thickness of Floor Tenax SFR and anchored to the same by "L"-shaped connectors fixed in holes resinated with Syntech Profix or fixed by nailing with "nail guns".
Provide a cover with wet TNT and waterproof sheet as soon as the surfaces are walkable and keep the surfaces covered for at least 48 hours.
It is always important to carry out preliminary tests to check the appropriateness of the product, depending on specific requirements. It is recommended to treat carefully the curing of the shotcrete for a few days, through continuous flushing of water or covering the same with a length of cloth made of polyethylene (winter period) or awning in non-woven fabric impregnated with water (spring/summer).
Application methods
Finishing trowel
Pump
Spatula
Straight edge
Technical specifications
Compressive strength after 12 hours
EN 12190
8 N/mm²
Compressive strength after 7 days
EN 12190
> 80 N/mm²
Compressive strength after 28 days
EN 12190
> 105 N/mm²
Flexural strength at 1 day
EN 196-1
> 8 N/mm²
Flexural strength after 7 days
EN 196-1
> 12 N/mm²
Flexural strength after 28 days
EN 196-1
> 14 N/mm²
Breaking load longitudinal
5 N/mm²
fR1 medium_ average residual strength after cracking (0.5 mm) EN 14651
4.5 MPa
fR3 medium_ average residual strength after cracking (2.5 mm) EN 14651
2.3 MPa
Resistance to the limit of proportionality (average value) EN 14651
7.1 MPa
Static elastic modulus
EN 13412
35000 N/mm²
Wear resistance
UNI EN 13892-3
0.8 cm³/50cm²
Capillary absorption
UNI EN 13057
0.38 kg•h^0.5/m²
Consumption
Approximately 21 kg/m² of Floor Tenax SFR for every centimetre of thickness to be implemented (approximately 2100 kg per cubic metre).
Storage and conservation
Store the product in its original packing, in a fresh and dry environment, avoiding frost and direct sunlight.
Warnings
The general information, along with any instructions and recommendations for use of this product, including in this data sheet and eventually provided verbally or in writing, correspond to the present state of our scientific and practical knowledge.
Any technical and performance data reported is the result of laboratory tests conducted in a controlled environment and thus may be subject to modification in relation to the actual conditions of implementation.
Azichem Srl does not assume any liability arising from inadequate characteristics related to improper use of the product or connected to defects arising from factors or elements unrelated to the quality of the product, including improper storage.
Those wishing to utilise the product are required to determine prior to use whether or not the same is suitable for the intended use, assuming all consequent responsibility.
The technical and characteristic details contained in this data sheet shall be updated periodically. For consultation in real time, please visit the website: www.azichem.com. The date of revision is indicated in the space to the side. The current edition cancels out and replaces any previous version.
Please note that the user is required to read the latest Safety Data Sheet for this product, containing chemical-physical and toxicological data, risk phrases and other information regarding the safe transport, use and disposal of the product and its packaging. For consultation, please visit: www.azichem.com.
It is forbidden to dispose of the product and/or packaging in the environment.
