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Application

  • Specifically designed for the structural waterproofing and protection of concrete substrates where improved chemical and abrasion resistance is required.
  • Intercrete 4840 can be reinforced with Intercrete 4872 tape to accommodate movement of cracks and joints.
  • It can also be used as a one or two coat, direct-to-metal corrosion protection system for suitably prepared steel substrates.
  • Depending upon the condition of the substrate and any exposed steel reinforcement, additional surface preparation products from the Intercrete range may be required prior to the application of Intercrete 4840.
  • All concrete floors, decks and highly porous substrates should be appropriately sealed using Intercrete 4850. Intercrete 4840 should always be applied directly to correctly prepared steel substrates.
  • The following topcoats are recommended for Intercrete 4840: Intercrete 4870.

Description

Features and benefits:

  • Offers low permeability to water at 10 bar positive and negative pressure.
  • Resistance to carbon dioxide gas and chloride ion diffusion.
  • Solvent free.
  • Grey matt finish.

General information

Color

Grey

Finish

Matt

Material

Epoxy

Guidance for specification option:

Coating for the protection of concrete and steel substrates.

Polymer

Uniclass

Pr_35_31_77_15 Concrete sealersPrimary

CAWS

C42/345 Protective coatings for concrete

Specification data - Concrete sealers

Composition

Epoxy resin-based.

Colour

Grey.

Product Reference

Intercrete® 4840

Dry film thickness

2000 μm.

Guidance for specification option:

Microns dry.

Density

1850 kg/m³.

CompressiveStrength

50–60 MPa.

Guidance for specification option:

To BS EN 4551 at 20°C: After 28 days.

  • 1 day: 5–10 MPa.
  • 7 days: 30–40 MPa.


Flexural strength

11–14 MPa.

Guidance for specification option:

To BS EN 4551 at 20°C, 65% R.H: after 28 days.

Adhesive strength designation

>2 MPa.

Guidance for specification option:

Over concrete.

>3 MPa.

Guidance for specification option:

Over steel.

Weight

15 kg.

30 kg.

Similar products from International®, brand of AkzoNobel

Intercrete® 4820

Intercrete® 4820

Intercrete® 4841

Intercrete® 4841