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HDL+ - Concrete Hardener & Densifier - Lithium Silicate Based - 500ml

£24.95


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ID: 304


HDL+ - Concrete Densifier & Hardener - Lithium Silicates Based - 500ml

HDL+ provides an advanced, blended alternative to conventional sodium or potassium silicate surface hardeners. This penetrating silicate treatment reacts with concrete to produce insoluble calcium silicate hydrate within the concrete pores.

HDL+ is appropriate for freshly troweled “green” concrete or existing floors of any age. Hardening/densifying with HDL+ renders concrete floors dustproof.

Unlike conventional hardeners which deposit high concentrations of sodium or potassium salts, HDL+ will not trigger or contribute to surface ASR (Alkali Silicate Reaction). 

Advantages

• Easy, one step application. No scrubbing. No flushing. No caustic wastewater.

• Penetrates and reacts quickly to produce better initial hardness.

• Renders concrete of any age dustproof.

• Provides excellent abrasion resistance

• Performance of treated concrete improves with traffic and maintenance.

• Improves performance, appearance and light reflectance of new or old concrete.

• Reduces application time and cost of burnishing and diamond polishing operations.

• Will not contribute to surface crazing. Combats surface ASR.

• Will not absorb water or contribute to concrete sweating.

• Gloss and hardness do not reduce slip resistance.

• Breathable and UV stable. Will not yellow, discolor, peel or flake.

• VOC compliant. Non-flammable. Non-toxic. Low odor.

• Cures quickly.

• Treated surfaces are easy to maintain.

Preparation

Protect surrounding surfaces and beware of wind drift.

Do not apply to surfaces which have been frozen, dirty or have standing water. Surfaces must be clean, dry and absorbent. Confirm absorbency with a light water spray, if the surface wets uniformly it is suitable for application.

New Concrete

HDL+ can be applied to freshly placed concrete after finishing and installation of the control joints.

When applying to new concrete remove soft cut saw debris prior to application.

Existing Concrete

HDL+ is ideal for application to existing, cured concrete of any age. Surfaces must be clean and structurally sound. Remove all foreign materials including bond breakers, curing agents, surface grease and oil, and construction debris.

Surface and air temperature

Temperature for application should be 4–38oC

Equipment

Apply with a low pressure sprayer, mop or soft bristled broom.

Application Instructions

Freshly placed, uncured steel troweled concrete

1. After final finishing, soft cut control joints

2. Clean concrete of any dirt, residue etc

3. Using a low pressure sprayer (1.9 litres per minute) apply a single coat to wet the surface without puddling. Use a clean soft bristle push broom or micro fibre pad to spread product evenly and ensure uniform wetting. Avoid spreading once drying begins, if surfaces dry immediately apply more product. Surface should remain wet for 5-10 minutes. Excess material will extend dry times and create white residues.

4. Allow treated surfaces to dry

5. Immediately apply the specified curing compound or initiate the curing procedure.

6. When curing process is complete, use an automatic floor scrubber equipped with cleaning pads or brushes to remove accumulated construction soiling and surface residues. This procedure will further enhance the surface sheen.

Cured, steel troweled concrete

1. Remove all dirt, debris, or curing compounds. Allow cleaning waters used in surface preparation to dry.

2. The prepared surface must wet uniformly. Confirm surface absorbency with light water spray. In hot, dry weather pre-wet the concrete with fresh water. Allow any standing water to evaporate.

3. Using a low pressure sprayer (1.9 litres per minute) apply a single coat to wet the surface without puddling. Use a clean soft bristle push broom or micro fibre pad to spread product evenly and ensure uniform wetting. Avoid spreading once drying begins, if surfaces dry immediately apply more product. Surface should remain wet for 5-10 minutes. Excess material will extend dry times and create white residues.

4. Allow treated surfaces to dry.

5. Remove any dried powder residue using stiff broom, power sweeper of floor scrubbing machine.

6. For immediate, enhanced shine, buff or burnish the dry concrete in both directions using an orbital floor machine or burnisher equipped with an appropriate polishing pad. This is a dry buffing operation.

Coverage Rates

Variations in concrete quality, porosity, temperature and relative humidity will affect average rates and drying times. Test an area to determine accurate consumption.

Freshly placed, uncured steel troweled, 7-19 m2 per litre

Cured steel troweled concrete, 7- 16m2 per litre

Cured ground/honed concrete, 7- 14 m2 per litre 

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