Hychem Hycrete PU-TC Solar — High-build coloured polyurethane coating with improved UV resistance

Surface preparation on concrete

Prior to the application of HYCRETE PU-TC-SOLAR, the substrate must be thoroughly prepared.

• The concrete substrate must be firm, clean and dry with a minimum compressive strength of 25 MPa and a minimum surface tensile strength of 1.5 MPa.
• New concrete must be allowed to cure for a minimum of 28 days.
• Remove all surface laitance, contaminants, existing coatings, curing compounds and any weak or loose materials.
• Prepare the concrete surface by Grinding, Shot Blasting, Scarifying, Ultra High-Pressure Water Jetting or Scabbling to provide the appropriate concrete surface profile (CSP) for optimum mechanical keying.
• The extent of surface preparation required is dependent upon but not limited to the thickness of the coating system to be applied. It is highly recommended that all surface preparation is carried out in accordance with industry standards and publications such as NACE 02203 item No. 22420 or ICRI Technical Guideline No. 03732.

Curing and Accelerating

Hycrete TC Solar is by nature relatively slow curing, it is therefore recommended to add 20ml AC20 per kit where temperatures are below 20°C.

10ml AC20 may also be added at temperatures 20-30°C for quicker curing.

Do not apply over damp or wet surfaces.

Do not apply where there is water vapour transmission.

(C) Technical data

1. Mixing ratio A : B : C : CP 1 : 1.3 : 1 : 0.175 by weight (kg)
2. Working time (25°C) Approx. 20–25 minutes
3. Application temperature 10–30°C (min. 3°C above dew point)
4. Material consumption approximately 0.15–0.5 kg/m2
5. Cure time 20°C to withstand:

• Foot traffic
• Heavy traffic

Exposure to chemical note: with AC20.

48 hours after 4 days after 7 days

Mix components A and B together for 30 seconds. Add aggregate bag and mix until a smooth consistency without lumps is achieved, 1–2 minutes should be sufficient. If using AC20 add and mix for 30 seconds.

Hychem HYCRETE PU-TC-SOLAR is a 3-component, high build coloured polyurethane coating. It has excellent mechanical and chemical properties. It is resistant to organic acids, dilute mineral acids, vegetable and animal fats, petroleum oils and solvents. HYCRETE PU-TC-SOLAR is an ultra-low yellowing UV stable semi-gloss top coat.

Overcoating: within 24 hours of the previous coat of Hycrete Solar.

Refer technical data sheet curing of other products if Hycrete TC

Solar is applied over another product.

The following information is a guide only.

Over a smooth surface the expected coverage is about 8–10 m²/litre. When applied over a broadcast surface the consumption will depend on the profile, however, approximately 3-5 m²/litre can be expected.

HYCRETE PU-TC-SOLAR is a 3-component neutral product consisting of a resin, hardener and blended fillers. A pigment pack needs to be added for colour.

Component breakdown:

• Part A – 1 kg
• Part B – 1.3 kg
• Part C – Aggregate 1 kg + 0.175 kg pigment

The mixed product will yield approximately 2.5 litres.

Wear gloves, eye protection, masks and overalls during mixing and application.