Performance Properties:
UNICRETE-320 Thick Bed Adhesive mixed with Water
Applicable Standards:
ANSI A118.4; EN 12004; IS15477: 2019
Tensile adhesion strength, EN1348 when used with 12mm x 12mm Notch trowel
EN 1348 Data
| Tensile Adhesion Strength |
|
|
| Initial: EN 1348 – Clause 8.2 |
≥1.00 N/mm² |
1.50–1.60 N/mm² |
| After Water Immersion: EN 1348 - Clause 8.3 |
≥1.00 N/mm² |
1.30–1.35 N/mm² |
| Heat Ageing: EN 1348 – Clause 8.4 |
≥1.00 N/mm² |
1.30–1.40 N/mm² |
| Freeze-Thaw: EN 1348 – Clause 8.5 |
≥1.00 N/mm² |
1.10–1.20 N/mm² |
The adhesive mortar conforms to EN12004
IS 15477: 2019 Data
| Property : Test method |
Requirement |
Typical Values |
| |
Tensile Adhesion |
|
| Dry Conditions—Annex A (Clause 5.1) |
Minimum 1.00 N/mm² |
1.15-1.25 N/mm² |
| Wet Conditions—Annex A (Clause 5.1) |
Minimum 1.00 N/mm² |
1.10-1.20 N/mm² |
| |
|
|
| |
Shear Adhesion |
|
| Dry Conditions - (Annex B (Clause 5.2)) |
Minimum 1.25 N/mm² |
1.35-1.45 N/mm² |
| Heat Ageing - Annex B (Clause 5.2) |
Minimum 1.00 N/mm² |
1.10-1.20 N/mm² |
| Wet Conditions - Annex B (Clause 5.2) |
Minimum 1.00 N/mm² |
1.15-1.25 N/mm² |
The Adhesive mortar conforms to IS 15477: 2019 as T ype 2 Adhesive
Packaging:
30 kg bags
Color:
Grey/White
Coverage:
Approx. 33-38 Sft per 30kg bag with 1/2” x 1/2” (12mm x 12mm) square notched trowel for average bed of 6mm.
Coverage will vary depending on trowel notch size, type and size of tile and substrate smoothness and evenness.
Working Properties at 70° F (21° C)
UNICRETE 320 Thick Bed Adhesive mixed with Water
| Open Time |
20 minutes |
| Adjustability Time |
20 minutes |
| Pot Life |
2 hours |
| Time to Heavy Traffic |
16-24 hours |
Specifications subject to change without notification. Results shown are typical but reflect test procedures used. Actual field performance will depend on installation methods and site conditions.
Surface Preparation:
All surfaces should be between 40° F (4°C) and 104° F (40°C) and structurally sound, clean, and free of all dirt, oil, grease, loose peeling paint, laitance, concrete sealers, or curing compounds.
Check the surface to be true to plumb. All slabs must be plumb and true to within ¼” (6mm) in 10 ft (3m). Rough or uneven concrete surfaces should be made smooth with UNICRETE 211 Screed/Plaster material to provide a wood float (or better) finish.
Dry, dusty concrete slabs or masonry should be dampened,, and excess water swept off. Installation may be made on a damp surface. New concrete slabs shall be damp cured and 28 days old before application. No minimum cure time for concrete slabs when thin-set mortar is mixed with latex additive.
Expansion joints shall be provided through the tile work from all construction or expansion joints in the substrate. Do not cover expansion joints with thin set mortar. Follow ANSI specification A108.01 – 3.7 “Requirements for Movement Joints: Preparations by Other Trades” or TCNA detail EJ-171 “Movement Joints—Vertical & Horizontal.” Do not cover expansion joints with mortar. For tile installation over Cement Backer Board, follow TCA installation details W244.
Note:
For tile or stone installations on plywood and wood substrates, UNITED PU-252 is recommended. Please refer to the specific product's technical data sheet for detailed recommendations. For all stone with a back-protection mesh, it is important to remove the mesh first and remove the epoxy layer by light grinding to ensure a perfect bond with the adhesive.
Mixing:
Place clean, potable water into a clean mixing bowl. Add UNICRETE-320 powder into the mixing bowl. Use approximately 8.25-8.75 Litres of water for 30 kg of powder
Mix by hand or with a slow-speed mixer to a smooth, trowelable consistency. Allow adhesive to slake for 5-10 minutes. Adjust consistency if necessary. Remix and apply with the proper-sized notched trowel.
Note: Addition of UNIICRETE latex admix*, partially or completely replacing water, would enhance the bond strength and flexibility of the medium-bed mortar.
* Contact UNITED technical services for large-format tile or stone installations on exterior surfaces.
