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Microfine Cement Grout

Ultra-fine cement grout for permeation grouting of soils, rock fissures, and fine concrete cracks.

Ultra-FinePermeation GroutingRock StabilizationLong Pot Life
PARTICLE< 12 μm (d95)
PENETRATIONSands & fine cracks
POT LIFE60–90 min
SHELF LIFE12 months
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↓ Download Datasheet (PDF)

Overview

Cement-based. Fine enough for fissures.

Microfine Cement Grout is an ultra-fine particle-size cement grout (d95 < 12 microns) for permeation grouting of fine-grained soils, rock fissures, and concrete crack networks too tight for conventional Portland cement. Despite the fine particle size, it produces grouted media with high strength and durability – ideal for permanent ground improvement.

Used in tunnelling, dam grouting, and foundation underpinning where chemical grouts cannot meet long-term durability requirements.

Key Features

  • Ultra-fine particles (d95 < 12 microns) – penetrates fine media
  • High strength – equivalent to structural mortar
  • Permanent inorganic chemistry – 100-year durability
  • Long pot life (60–90 minutes) for deep injection
  • Bleed-free and shrinkage-controlled
  • Compatible with chemical accelerators for set control

Technical Specs

Technical Specifications

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

PropertyValueUnit
FormPre-blended ultra-fine cement powder–
Particle size (d95)< 12μm
Blaine fineness≥ 9000cm²/g
Mix water ratio0.6–1.0 (W/C)–
Mixed density1.55 ± 0.05g/cm³
Marsh cone viscosity30–40seconds
Bleed< 2%
Pot life60–90minutes
Initial set6–8hours
Final set12–18hours
Compressive strength (28d)≥ 30MPa
Application temperature+5 to +35°C
Packaging20kg bag
StandardsEN 12715 · ASTM C937–

Applications

Where this product is used

Six typical site applications where our crews specify this product.

🌍

Soil permeation grouting

Stabilization of fine sands and silty soils.

⛰️

Rock fissure grouting

Dam and tunnel rock-mass consolidation.

🚇

Tunnel pre-grouting

Pre-excavation rock mass consolidation.

🏗️

Foundation underpinning

Soil reinforcement beneath existing foundations.

💧

Cut-off curtains

Underground water cut-off grouting curtains.

🌉

Dam grouting

Foundation and abutment grouting for dam projects.

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