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Chemical Hardeners

Product Guide

For more information, see the Product Selection Guide.

Suggestions for chemical hardeners include, but are not limited to, the following:

• This section describes liquid chemical hardeners for concrete surfaces. If a membrane-forming sealer with gloss finish is required, then refer to Sealers section.
• These liquid chemical hardeners are typically used to harden and dustproof concrete surfaces for extended service life.
• Liquid chemical hardeners are applied to concrete surfaces that are at least 7 days old.
• Previously applied curing compounds and coatings must be removed prior to application of liquid hardeners. Cleaning methods include shotblasting, sandblasting, high pressure water blasting and/or a safe floor stripper.
• Proper surface penetration is crucial to performance. All dirt, oil and other contaminants must be removed before application.
• A good method to determine if the surface has been sufficiently cleaned is to place a few drops of water in different areas on the surface. If the water is readily absorbed into the surface, then no additional cleaning is necessary.
• The surface should be completely dry before application. A dry surface helps to maximize the depth of penetration.
• Surface finish and substrate porosity can vary greatly, which changes the rate of application needed. Crystallization (white residue) on the surface during application indicates a saturated substrate or insufficient rinsing of the treated surface. Crystallization should be scrubbed clean immediately and rinsed. Application rate should be adjusted.
• The preferred application method is very low pressure spray (approx. 15 psi, 0.1 MPa), using a fan-type spray nozzle. An acceptable alternative is to pour the liquid hardener on the concrete surface and spread uniformly with brooms.

Liquid Systems Available in solvent or water-based formulations. Form Releases Curing Compounds Cure and Seals Sealers Water Repellents Chemical Hardeners Bonding Agents Evaporation Reducers	Cement Systems Enhance concrete performance or correct problems. Non-shrink Grouts Repair Mortars Shake-on Hardeners Floor Levelers
Epoxy Systems Resin-based systems correct structural concrete problems and protect concrete surfaces. ResCon Gel Anchors ResCon Binders ResCon Bonders ResCon Grouts ResCon Injection Resin ResCon Joint Fillers	Polyurea Systems Polyurea-based systems to repair and protect concrete joints and nosings, even in low temperature conditions. Polyureas