- Secondary and tertiary annulus grouting of segmentally lined tunnels and shafts.
- Back grouting of sub-surface cast in-situ structures (shaft linings, station box and basement walls and cast in-situ tunnel linings).
Contact grouting is used in tunneling and underground works to fill voids between a structure and the surrounding soil or rock. The process prevents water infiltration by sealing gaps and water paths and also enhances structural stability by ensuring proper load transfer and reinforces the interface to prevent settlement or movement.
Groundwater ingress through undgeround structures can cause corrosion, waterproofing failure, and structural damage. Even low-flow leaks often exceed strict inflow allowances, making sealing essential to ensure durability and compliance while preventing future costly repairs.
High-flow groundwater ingress through undrground structures can lead to rapid erosion, structural instability, and flooding, severely impacting safety and project timelines. Uncontrolled water can wash out fines, weaken foundations, overwhelm drainage systems and prevent works from progressing. Stopping high-flow ingress is critical to protect structural integrity, prevent costly delays, and maintain a safe working environment.
When it comes to concrete defects, we’ve seen it all—and fixed it all. Direct Inject has been trusted on many of Australia’s most high-profile infrastructure projects, delivering reliable results under the toughest conditions.
Our team combines real-world experience with proven repair methods using only the most widely used and trusted chemical products in the industry.
We complete every project on time and within budget. Our streamlined process and commitment to transparency ensure a stress-free experience from consultation to completion.
If it’s been done before, we’ve done it—and if it hasn’t, we’ll find the safest and most effective way to get it done.
Using cutting-edge technology and premium materials, we ensure lasting solutions that stand the test of time. Our proven track record with tier 1 clients demonstrates our commitment to excellence.
Contact us now for a no-obligation consultation.
