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Micro Concrete (Free-Flow)

Free-flowing shrinkage-compensated micro-concrete for formwork-and-pour structural repair.

Self-CompactingShrinkage-CompensatedPumpableEN 1504-3 R4
APPLICATION30–100 mm
STRENGTH (28d)≥ 60 MPa
FLOWSelf-compacting
SHELF LIFE12 months
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↓ Download Datasheet (PDF)

Overview

Pour. Self-compact. Cure without shrinkage.

Micro Concrete (Free-Flow) is a pre-blended, free-flowing, shrinkage-compensated structural micro-concrete for formwork-and-pour repair. The self-compacting rheology fills complex formwork without vibration, while the expansive shrinkage-compensating chemistry ensures full bond contact at the substrate interface.

Ideal where trowel-applied mortar is impractical: deep section losses, overhead pours, and repair of post-tensioned elements.

Key Features

  • Self-compacting – flows into complex formwork
  • Shrinkage-compensated – expands during early cure
  • Pre-blended micro-concrete – pumpable
  • High early and ultimate strength
  • Sulphate and chloride resistant
  • Compatible with bonding agents and rebar primers

Technical Specs

Technical Specifications

All values measured at 23°C unless noted. Full test data available in the datasheet.

PropertyValueUnit
FormPre-blended micro-concrete powder–
CompositionCement + aggregate to 5 mm + shrinkage compensator–
ColourGrey–
Mixing water11–13%
Flow (J-Ring)≥ 650mm spread
Pot life30–45min
Compressive strength (28d)≥ 60MPa
Flexural strength (28d)≥ 8MPa
Bond strength≥ 2.5MPa
Drying shrinkage≤ 400μm/m
Expansion (early)+0.05 to +0.15%
Application thickness30–100mm
Wet density2.30 ± 0.05g/cm³
StandardsEN 1504-3 R4 · ASTM C1107–

Applications

Where this product is used

Five typical site applications where our crews specify this product.

🏗️

Deep section repair

Pour-in-place repair of deep structural section losses.

🌉

Beam jacketing

Encasing of damaged beams within structural jackets.

⛓️

Post-tensioned repair

Section restoration around post-tensioned anchorages.

🏭

Industrial structures

Large-volume structural repair in industrial facilities.

🚧

Crash damage repair

Reconstruction of vehicle-impacted bridge piers.

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