Non-Shrink Grout – Very High-Strength

Very High-Strength Non-Shrink Structural Grout

FLOW GR 800 is a multi-purpose, very high-strength, non-shrink and non-metallic cementitious grout developed for demanding structural grouting and micro-concreting applications.

The product requires only the addition of clean water to produce a highly flowable grout with strong adhesion to steel and concrete, low permeability, no bleeding and high mechanical performance.

FLOW GR 800 is suitable for machinery foundations, thick voids beneath base plates, structural steel, precast concrete, anchor bolts, manholes and bridge or road-maintenance operations. It complies with ASTM C1107 Grade C, EN 1504-3 class R4 and ASTM C476.

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Properties

Technical Data

Properties

Property	Value
Type	One-component very high-strength cementitious structural grout
Color	Grey
Mixing Water	Approximately 3.8 litres per 25 kg bag
Wet Density	Approximately 2.2 kg/l
Setting Time	Approximately 4 hours at 23°C
Application Thickness	5-100 mm
Compressive Strength after 7 Days (ASTM C109)	≥ 25 MPa
Compressive Strength after 28 Days (ASTM C109)	≥ 75 MPa
Flexural Strength after 28 Days (ASTM C348)	≥ 10 MPa
Bond Strength after 7 Days	≥ 1 MPa
Bond Strength after 28 Days	≥ 2 MPa
Flowability at 0 Minutes (ASTM C1437)	≥ 300%
Flowability at 30 Minutes (ASTM C1437)	≥ 280%
Bleeding (ASTM C940)	Nil
Expansion (ASTM C827)	Up to 3%
Chloride Content	Nil
VOC Content (ASTM D2369)	Approximately 10 g/l; LEED compliant
Standards and Classification	ASTM C1107 Grade C, EN 1504-3 class R4 and ASTM C476
Packaging	25 kg paper bag
Shelf Life	12 months under recommended storage conditions

Technical Data

Uses

High-performance grouting beneath machinery foundations.
Grouting thick-section voids beneath equipment and machinery base plates.
Grouting and anchoring structural-steel members.
Grouting and anchoring precast-concrete members.
Filling voids between existing and new concrete.
Structural repair work in precast elements.
Anchoring bolts, stanchion bases, masts and fence posts.
Micro-concreting in bridge and road-maintenance operations.
Filling voids between pipes and concrete in manholes and water tanks.
Suitable for structural bedding, grouting and void-filling operations.

Advantages

Very high-strength structural cementitious grout.
Multi-purpose, non-shrink and non-metallic formulation.
High early-strength development at flowable consistency.
High compressive and flexural strength.
High bond strength to steel and concrete.
Adjustable flowable or plastic consistency.
Suitable for pumping and pouring applications.
Low permeability.
Relatively low exothermic heat during thick-section grouting.
Suitable for Middle Eastern climatic conditions.
No bleeding and no chloride content.
Low VOC and emissions.
Complies with ASTM C1107 Grade C.
Classified as R4 according to EN 1504-3.

Standards Compliance

Complies with ASTM C1107, Grade C.
Complies with EN 1504-3, class R4.
Complies with ASTM C476.
Compressive strength tested according to ASTM C109.
Flexural strength tested according to ASTM C348.
Flowability tested according to ASTM C1437.
Bleeding tested according to ASTM C940.
Expansion tested according to ASTM C827.

Substrate Preparation

The substrate must be sound, clean and free from dust, oil, grease, laitance and contaminants.

Thoroughly saturate absorbent concrete surfaces with clean water. Remove all standing and excess water before grout placement.

Steel surfaces must be free from rust, scale, oil and grease. Formwork must be watertight, rigid and sufficiently strong to prevent leakage or deformation.

Mixing

Use approximately 3.8 litres of clean water for each 25 kg bag.
Place the measured water in a clean mixing container.
Slowly add FLOW GR 800 powder while mixing continuously.
Use a grout mixer or slow-speed drill fitted with a high-shear mixing paddle.
Mix for at least three minutes until homogeneous and uniform.
Do not divide packs or attempt partial mixing.
During hot weather, condition the bags in a cool environment and use chilled water.
Maintain the mixed-grout temperature below 30°C.
Use chilled water when grouting thick sections and large pockets.

Placement

Place FLOW GR 800 immediately after mixing.
Pour continuously from one side only.
Arrange the pour so the grout travels the shortest practical distance.
Ensure that displaced air can escape freely.
Maintain a continuous hydrostatic head during base-plate grouting.
Keep exposed grout surfaces as small as practical.
Shade foundations and base plates from direct sunlight during hot weather.

Application Thickness

Minimum recommended thickness: 5 mm.
Maximum normal thickness: 100 mm.
For sections thicker than 100 mm, add 8 kg of clean, washed 5-8 mm aggregate to each 25 kg bag.

Precautions

Maintain the grout and contacting elements at a temperature between 5°C and 35°C.
Do not add excessive water.
Do not use water that causes bleeding or segregation.
Do not retemper grout that has begun to set.

Curing

Protect exposed surfaces from rapid moisture loss using continuous water curing, wet hessian or a suitable WHITE SAND-CURE curing compound.

Cleaning

Clean tools immediately after use using clean water. Hardened material must be removed mechanically.

Storage and Shelf Life

FLOW GR 800 has a shelf life of 12 months when stored in its original sealed packaging in a dry, shaded place under suitable warehouse conditions at a temperature below 35°C.

Packaging

25 kg paper bags.

Health and Safety

Wear suitable protective gloves and safety goggles.
Avoid contact with the skin and eyes.
Wash skin contact immediately using soap and clean water.
Rinse eye contact immediately with plenty of clean, cold water.
Seek medical advice if irritation continues.
The product is non-flammable.
Follow applicable local disposal regulations.

Quality and Technical Support

WHITE SAND products are developed and manufactured under a quality-oriented product-development process and an independently certified quality management system.

WHITE SAND provides technical assistance regarding high-strength grout selection, formwork, aggregate addition, mixing, pumping, placement and curing.