Sika® Ucrete® TZAS
(former Ucrete® TZAS)
Antistatic, smooth, heavy-duty polyurethane terrazzo floor screed
Sika® Ucrete® TZAS is a smooth, polyurethane, conductive, heavy-duty terrazzo floor with a decorative aesthetic for ESD and ECF environments. It has very good resistance to aggressive chemicals, heavy abrasion and temperatures to +150 °C.
- Expert installation by fully trained and licensed applicators
- Suitable for application on to 7-day-old concrete and 3-day-old polymer screed
- Resistant to bacterial or mould growth
- Electrostatically conductive
- Seamless and hygienic
- Easy to clean and maintain
- Non-tainting from the end of mixing
- Good resistance to abrasion
- Good resistance to specific chemicals
- Good temperature resistance
- Low VOC emissions
- Tolerant to substrates with high moisture content
Usage
Sika® Ucrete® TZAS is used as a wearing layer screed for Sika® Ucrete® flooring systems. Sika® Ucrete® TZAS is used within dry process areas including the following application areas:- Pharmaceutical facilities
- Chemical and processing facilities
- Clean rooms
- Warehouses
- Defence estates
- Electronic facilities and data centres
- The Product may only be used by experienced professionals.
Advantages
- Expert installation by fully trained and licensed applicators
- Suitable for application on to 7-day-old concrete and 3-day-old polymer screed
- Resistant to bacterial or mould growth
- Electrostatically conductive
- Seamless and hygienic
- Easy to clean and maintain
- Non-tainting from the end of mixing
- Good resistance to abrasion
- Good resistance to specific chemicals
- Good temperature resistance
- Low VOC emissions
- Tolerant to substrates with high moisture content
Packaging
Refer to the current price list for available packaging variations.
Colour
Cured colour | Red, Orange, Yellow, Bright Yellow, Cream, Grey, Light Grey, Green, Light Green, Green/ Brown, Blue. |
Product Details
APPROVALS / STANDARDS
Halal Certification Europe (HCE), Sika® Ucrete®, WHFC, Certificate No. 21453-2/1/1/Y1
Food and Beverage Facilities Suitability, Sika® Ucrete®, HACCP, Test Report No. I-PE-769-SA-2-RG-06b
Indoor Air Comfort Gold EN 16516, Sika® Ucrete®, eurofins, Certificate No. IACG-321-01-01-2023
Chemical Base
Water-based polyurethane cement hybrid
Shelf Life
Always refer to the best-before date of the individual packaging.
Storage Conditions
The Product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Always refer to the packaging.
Refer to the current Safety Data Sheet for information on safe handling and storage.
Density
Mixed Product | ~2.09 kg/l |
System Structure
| Layer | Product | |
| 1. | Primer | Sika® Ucrete® PSC |
| 2. | Earthing connection | Copper tape |
| 3. | Wearing layer | Sika® Ucrete® TZAS |
Compressive Strength
Cured 28 days at +23 °C | 55 N/mm² |
Modulus of Elasticity in Compression
3250 MPa | (BS 6319-6) |
Flexural Strength
Cured 28 days at +23 °C | 14 N/mm² |
Tensile Strength
Cured for 28 days at +20 °C | 6 MPa |
Tensile adhesion strength
> 2.0 N/mm² (concrete failure) | (EN 1542) |
Coefficient of Thermal Expansion
2.4 × 10-5 °C-1 | (ASTM C531) |
Skid / Slip Resistance
PTV, slider 96 | 35–40 wet conditions (without top coat) |
Electrostatic Behaviour
Resistance to ground | RG< 1 × 106 Ω |
Resistance to ground | RG< 1 × 106 Ω |
Resistance of person to earth | < 35 MΩ |
Body voltage generation | < 50 V |
Note: Measurement results can be affected by ESD clothing, ambient conditions, measurement equipment, cleanliness of the floor and the test personnel.
Service Temperature
Thickness | Minimum | Maximum | Occasional spillage |
9 mm | -40 °C | +120 °C | - |
12 mm | -40 °C | +130 °C | +150 °C |
Chemical Resistance
Laboratory-defined resistance to many individual chemicals. Before proceeding, contact Sika Technical Service for specific information.
Reaction to Fire
| Class Bfl-s1 | (EN 13501-1) |
Application
Layer Thickness
~9–12 mm
Product Temperature
Maximum | +30 °C |
Minimum | +15 °C |
Ambient Air Temperature
Maximum | +35 °C |
Minimum | +10 °C |
Substrate Temperature
Maximum | +30 °C |
Minimum | +10 °C |
Curing Time
| Substrate temperature | Return to traffic |
| +8 °C | 16–24 hours |
| +10 °C | 4 hours (with Sika® Ucrete® Accelerator) |
Note: Times are approximate and will be affected by changing ambient and substrate conditions.
Consumption
Layer | Product | Consumption |
Primer | Sika® Ucrete® PSC | 0.2–0.4 kg/m2 |
Earthing connection | Copper tape | Maximum distance 10 m between strips |
Wearing layer | Sika® Ucrete® TZAS | 20–22 kg/m2 for 9 mm 26–27 kg/m2 for 12 mm |
Note: Consumption data is theoretical and does not allow for any additional material due to surface porosity, surface profile, variations in level, wastage or any other variations. Apply the Product to a test area to calculate the exact consumption for the specific substrate conditions and proposed application equipment.
SUBSTRATE PREPARATION
IMPORTANT
Reduced service life due to incorrect treatment of cracks
The incorrect assessment and treatment of cracks may lead to a reduced service life and reflective cracking.
- For static cracks, ensure the width is suitable for overcoating with Sika® Ucrete® TZAS.
- For dynamic cracks, ensure the movement is within the movement capacity of Sika® Ucrete® TZAS.
TREATMENT OF JOINTS AND CRACKS
Construction joints and existing static surface cracks in substrate require pre-treating before full layer application. Use Sikadur® or Sikafloor® resins.
The Product can be applied on green or damp concrete with no standing water. Allow for at least 3 days for early concrete shrinkage to occur to prevent shrinkage cracks from appearing on the wearing surface.
Cementitious substrates must be structurally sound and of sufficient compressive strength (minimum 30 N/mm2) with a minimum tensile strength of 1.5 N/mm2.
Substrates must be clean, dry and free of contaminants such as dirt, oil, grease, coatings, laitance, surface treatments and loose friable material.
APPLICATION
Application must be undertaken by a fully trained and licensed Sika® Ucrete® applicator.