Description

Hydroc Hydroc H3 Catalyst is a highly active penetrating waterproofer, corrosion inhibitor, and durability enhancer for concrete, based on Aardcure Catalyst technology. Chloride- and silicate-free, it catalyses new growth in pores, micro and macro cracks of new and existing concrete, significantly improving concrete durability and waterproofing.

Application Instructions

Hydroc H3 Catalyst penetrates deep into surfaces and voids, promoting new cementitious growth, increasing abrasion resistance, passivating reinforcement, and reducing permeability to water and chemicals.

Applications

• Treatment of micro and macro shrinkage cracks, up to 0.3mm wide
• Primer for Hydroc waterproofing and repair mortars
• Surface hardening and abrasion resistance of concrete surfaces i.e. floors, roads, bridge decks etc.
• Reduces moisture vapor transmission and resists hydrostatic pressure in concrete slabs
• Enhances adhesion of applied coatings
• Water retention agent for new hardening concrete.

Performance

Reactions within the concrete remain active for at least 28 days and become a permanent part of the structure.

Features & Benefits

As a performance and durability enhancer of existing concrete structures, Hydroc H3 Catalyst:

Increased density and hardening of the surface layer
Stops surface dusting
Increases impermeability, chemical resistance and durability
Restores the protective properties of the concrete against reinforcement corrosion
Reduces moisture vapour transmission and hydrostatic pressure from positive and negative sides
Durabililty enhancer for brickwork joints.

On new hardening concrete, Hydroc H3 Catalyst:

Reduces water loss by approximately 20%
Promotes efficient cement hydration
Stops surface dusting
Reduces surface shrinkage cracking and micro-cracking
Increases surface hardness, impermeability and durability
Enhances concrete protective properties against steel reinforcement corrosion

APPLICATION GUIDELINES

Surface Preparation

Surfaces must be clean, dry and free of ponded water prior to application.

Clean the surface to remove any dirt, laitance, previous coatings or curing agents that may prevent penetration of the material.

Ensure all residual cleaning agents or strippers are removed and surface is flushed with clean water and allowed to dry thoroughly.

Minimum preparation of pressure washing at a minimum of 2000psi is recommended.

Crack voids to be treated should be cleaned with compressed air at a minimum.

Confirm absorbency of surface with a light water spray, ensuring penetration into the surface is achieved.

Application Method

1. Surface Treatment (Hairline Cracks and Microcracks up to 0.3mm Wide)

Apply to a dry surface using a low- pressure sprayer with an adjustable tip.
Apply a single, even coat at a rate of approximately 1L per 3m² or until full saturation is achieved.
For highly porous or degraded surfaces, reapply after 2 to 4 hours with additional Hydroc H3 Catalyst.

2. Shrinkage and Structural Cracks (0.3mm to 2.0mm Wide)

Use a low-pressure sprayer with an adjustable tip to saturate all visible cracks.
Spray a saturating coat over the entire surface at approximately 1L per 3m².
Once the surface turns from wet to damp, fill cracks with a specialised cementitious repair powder Hydroc

Reinstate:

Sweep or rub the powder into the cracks
If the powder settles into the cracks, repeat the process until all cracks are fully filled
Vibration of the area may be beneficial for larger cracks as required
Mist Hydroc H3 Catalyst over the filled cracks to complete the treatment.

Recommended Repair Products:

For cracks up to 1.5mm wide – use Hydroc Reinstate
For cracks up to 2.0mm wide – use Hydroc TCR Crack Repair.

As a Primer:

When using as a primer for Hydroc waterproofing and repair mortars, apply multiple coats as needed to fully wet the surface
Apply cementitious render or mortar once the surface is damp but free of puddles.

3. Freshly Placed Concrete

For application after initial set (once bleed water has evaporated):
Apply after final trowel finish, ensuring the surface is clean and dry
Cut joints prior to application and remove dust and debris
Cure the concrete according to industry standards after applying

Hydroc H3 Catalyst

• For burnished or tightly trowelled concrete Aardcure Catalyst is recommended.

Drying Time:

Allow treated surfaces to dry for 30 to 60 minutes before applying additional treatments such as curing agents.