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Application

  • Concrete substrates.
  • Basements / below ground structures.
  • Foundations, slabs, retaining walls etc.
  • Drinking water structures.
  • Sewage treatment plants.
  • Swimming pools.

The product can be applied with a brush, suitable spray equipment or by dry sprinkling. Backfilling can be carried out three days after completion of the treatment. Plastering/ coating after four weeks.

Description

Drybase Crystalline Active Slurry is a cementitious, ready mixed, in-depth waterproofer for concrete surfaces. It consists of grey Portland cement, specially treated quartz sand and a compound of active chemicals.

When it is applied to a concrete surface the active chemicals combine with the free lime and moisture present in the capillary tract, to form insoluble crystalline complexes. These crystals block the capillaries and minor shrinkage cracks in the concrete to prevent any further water ingress (even under pressure). The concrete and the product will remain vapour permeable.

In addition to waterproofing the structure, the slurry protects concrete against seawater, wastewater, aggressive groundwater and certain chemical solutions. Tested for use in contact with drinking water.

For use as a Type A system, in compliance with:

  • BS 8102.
  • NHBC Chapter 5.4.

Features and benefits:

  • In-depth waterproofing and protection slurry.
  • Permanently active.
  • For positive and negative water pressure.
  • Approved for drinking water structures.
  • BBA approved.

Applications:

  • Concrete substrates.
  • Basements / below ground structures.
  • Foundations, slabs, retaining walls etc.
  • Drinking water structures.
  • Sewage treatment plants.
  • Swimming pools.

The product can be applied with a brush, suitable spray equipment or by dry sprinkling. Backfilling can be carried out three days after completion of the treatment. Plastering/ coating after four weeks.

General information
Specification data - Crystallization active slurry mortars
Product Reference

Drybase Crystalline Active Slurry

Standard product features

Technical characteristics:

  • Appearance: Grey powder.
  • Standards: EN 1504-3:2005/ ZA.1a.
  • CC fine mortar for non-structural repair (based on hydraulic cement).
  • Coverage: 0.8–1.5 kg/m², depending on the application, consult technical literature.
  • Compressive strength: Class R3 ≥25 MPa.
  • Chloride ion content: ≤0.05%.
  • Adhesive bond: ≥0.8 MPa.
  • Modulus of elasticity: ≥20 GPa.
  • Reaction to fire class: A1.
  • Dangerous substances comply with NHBC Chapter 5.4.
  • Thermal compatibility (Part 4: Dry thermal cycling): ≥0.8 MPa.
  • Capillary absorption: ≤0.5 kg/m² h0.5.
  • Workability at 20°C: 30 minutes (approximately).
  • Setting time at 20°C: 1-2 hours (approximately).

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