Hychem WE500 — Waterbased self-smoothing epoxy

Prior to the application of WE500, the substrate must be adequately prepared.

• The concrete substrate must be firm, clean and dry with a 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. WE500 may be able to be applied to concrete earlier than 28 days, contact Hychem for advice.
• Remove all surface laitance, contaminants, existing coatings, curing compounds and any weak or loose materials.
• Prepare the concrete surface by Grinding, Light Shot Blasting or High Pressure Water Blasting to provide the appropriate concrete surface profile (CSP) for optimum mechanical keying.

The choice of preparation method will depend on the finish of the concrete.

• The extent of surface preparation required is dependant upon but not limited to the thickness of the coating system to be applied. It is highly recommended surface prepation is carried out in accordance with industry standards and publications such as NACE 02203 item No. 22420 or ICRI Technical Guideline No.

03732.

Prior to the application of WE500, prime the concrete with 2 coats of WE70. Please see WE70 TDS for more details.

Self-smoothing floor topping

1. Mix the hardener and ESL500 aggregate together thoroughly until a uniform consistency is achieved, and no clumps or dry powder exist in the mix. Mix at low speed to minimise the incorporation of air.
2. Now add the resin to the hardener/ESL500 mixture, and mix thoroughly until a uniform consistency is achieved, Mix at low speed to minimise the incorporation of air for 3 minutes.
3. Pour the wet mix on the floor. Spread evenly over the floor area to a thickness of 4mm using a notched or flat blade trowel or a pin-rake set to the correct thickness.
4. Ensure to maintain continuity of wet material between pours.
5. Roll the surface with a spike roller immediately to remove entrapped air.

It is recommended to topcoat WE500 with WE90. if increased slip resistance is required then an appropriate grit and size needs to be selected. Please see WE90 TDS for more details.

HYCHEM WE500 is a pigmented, water-based epoxy self-smoothing topping. It has very low odour and very low

VOC (volatile organic compound). It offers excellent early water resistance, good curing at low temperature and excellent adhesion to green concrete.

CONSUMPTION RATES 1 Kit of WE500 will cover 2.85 m² when applied at 4mm.

4 months from date of manufacture, stored under shelter at 25ºC in the original un-opened container. Store the material in a stable stationary environment to reduce the settling of fillers and aggregates.

WE500 is an industrial flooring finish which may discolour on exposure to UV light from the sun or an artifical source. The severity of discolouration is dependant on colour choice. Any such discolouration has no effect on the performance of the product.

Field support where provided, does not constitute supervisory responsibility. Suggestions made by HYCHEM either verbally or in writing may be followed, modified or rejected by the owner, engineer or contractor since they and not HYCHEM are responsible for carrying out procedures appropriate to a specific application.

The technical information and application advice given in this publication is based on the best information available at the time of print. As the information herein is of a general nature, no assumption can be made as to the product suitability for a particular use or application and no warranty as to its accuracy, reliability or completeness either expressed or implied is given other than those required by Commonwealth or State Legislation. The owner, his representative or the contractor is responsible for checking the suitability of products for their intended use.

To minimise an unsatisfactory cure the following indicative application conditions should be observed with respect to temperature and humidity levels.

• 21° C and less than 80% humidity
• 10° C and less than 75% humidity