Dribond Non-Shrink Grout

Non-shrink grout is a pre-mixed cementitious material formulated with reactive chemical agents that cause controlled expansion during curing. Unlike standard cement grout, which can shrink as it sets and leave voids or gaps, non-shrink grout maintains — or slightly exceeds — its original volume. This positive volumetric change ensures complete, gap-free contact between the grout and the surrounding substrate, delivering reliable load transfer and long-term durability.

Structural grout is a high-strength, load-bearing grout designed to transfer forces between structural elements — such as machine bases, steel column bases, precast concrete columns, and anchor bolts — and their concrete foundations. It must meet strict compressive strength requirements (Class A under Australian standards) and achieve void-free contact to perform under dynamic and static loads. Dribond Non-Shrink Grout is a Class A structural grout, making it suitable for safety-critical and load-bearing applications.

Coverage varies depending on the water-to-powder ratio used and the chosen application consistency. As a general guide for a standard 20 kg bag of Dribond Non-Shrink Grout:

Flowable: ~0.009 m³ (9 litres yield) per 20 kg bag | Application: Machine base grouting
Plastic: ~0.009 m³ (9 litres yield) per 20 kg bag | Application: Anchor bolts, column bases
Dry-Pack: ~0.009 m³ (9 litres yield) per 20 kg bag | Application: Masonry patching, dense fills

Practical tips for accurate coverage estimation:

Measure the void volume (length × width × depth) before mixing.
Allow for wastage of approximately 5–10% for poured or pumped applications.
Use less water for dry-pack (stiffer mix) to maximise yield and compressive strength.

Yes. Dribond Non-Shrink Grout is specifically engineered and approved for structural applications, including:

• Grouting machine bases and equipment plinths
• Steel and precast concrete column base plates
• Anchor bolts and holding-down bolts
• Underpinning and brickwork repair
• Patching structural holes in masonry

It meets Class A cement grout classification and is formulated with Portland cement, graded siliceous aggregate, and reactive chemical expansion agents. Critically, it contains no calcium chloride, eliminating the risk of corrosion in applications near reinforcing steel or metal fixtures.

Non-shrink grout provides excellent resistance to water ingress due to its dense, void-free matrix formed by controlled expansion during curing. However, it is important to distinguish between water-resistant and fully waterproof: Dribond Non-Shrink Grout is highly water-resistant under normal conditions, but it is not classified as a dedicated waterproofing membrane. For applications requiring full waterproofing — such as below-ground structures, water retaining structures, or permanently submerged elements — Dribond should be used in conjunction with an appropriate waterproofing system. For grouting applications in wet or moist environments (e.g., pump bases, drainage channels, wet plant areas), the grout performs reliably and will not deteriorate or lose bond due to moisture exposure.