/Our services

Ground Treatment
& Injection.

Ground treatment is often required ahead of complex underground construction where existing ground and groundwater conditions do not meet the requirements established for the proposed works. Following geotechnical and hydraulic assessment by the project designers, Direct Inject can be engaged early to review the specified treatment objectives and work alongside the project team and specialist material suppliers to develop a practical grouting, injection, verification and testing strategy.

/Complex Solutions 02

Ground Treatment.

Direct Inject provides the specialist personnel, pumping equipment and injection systems required to execute ground treatment works against defined project requirements and acceptance criteria. Depending on the treatment objectives, works can involve OPC and microfine cement grouts through to multi-component acrylate gels with variable and controllable reaction times. Where required, we work alongside the project team and material suppliers to undertake pre-production trials, testing different products, mixes and injection parameters to help establish the most suitable solution before full-scale works commence. We then support the planning, execution, verification and reporting of the production works through to completion.

Typical Applications

Pre-Production Trials – Site trials undertaken with project teams and material suppliers to assess proposed grouting systems. Trials can compare products, mixes, reaction times and injection parameters to establish the required production methodology.
Pre-Excavation Ground Treatment – Grouting and injection undertaken ahead of excavation to improve ground or groundwater conditions. Typical applications include deep shafts, pits, station boxes, basements and other retained excavations.
Breakouts & Open-Face Tunnelling – Targeted ground treatment before breaking through tunnel linings or retaining structures. Applications include cross passages, adits, tunnel-to-shaft connections and other open-face excavations.
Groundwater Cut-Off & Curtain Grouting – Installation of grout curtains or treated zones to reduce ground permeability and groundwater movement. Applications include shafts, pits, tunnels, retaining structures and other below-ground excavations

Trusted suppliers

MC-Beuchemie
Normet Australia
Sika Australia
Master Builders Solutions

Call Us (02 7239 0808) Contact Us

/ Why choose us

The Direct Inject Difference.

Expertise You Can Trust

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.

Reliability & Efficiency

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.

Innovation & Quality

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.

/ Our Fleet

Machinery & Equipment Used.

POLYURETHANE, ACYLIC & GROUT PUMPS

A range of specialised injection and pumping equipment.

See All

/ What we’ve achieved

Concrete Remediation Projects.

/TESTIMONIALS

Trusted by
Industry Giants.

Our expertise in structural repair, water stopping and hydro-demolition solutions has earned the confidence of Australia’s most demanding projects and prestigious clients.

“Direct Injects reputation as experts at repairing leaks in underground structures is well deserved. I have worked with them on multiple tunnelling projects, and have consistently been impressed with their results”

Project Manager – Acciona, 2025

“I have worked with Direct Inject on multiple projects across Sydney. The expertise, quality and resources their team provides has always ensured successful project outcomes. Their crews embed themselves seamlessly into the project team and always strive to hit the aggressive targets we set them”

Project Engineer – Gamuda, 2025

“I worked with Direct Inject throughout the entire delivery phase of the Western Sydney Airport SBT project. Their team played a significant role in the project achieving most of its critical portion handovers and their willingness to really become an extension of our engineering team rather than just a labour hire contractor was refreshing.”

Area Manager – CPB Contractors, 2024

“I have utilised Direct Inject on two Major Projects in Sydney and in different capacities. Firstly, PU Injection and secondly robotic hydro demolition. What impresses me the most is their no fuss attitude and commitment to getting the right outcome for their Client. In both instances they have delivered and exceeded on what has been expected. I’ll certainly be engaging their services again”

Project Manager – John Holland, 2025

“JAGCON Group directly assisted the head contractor CPB Contractors & Ghella Joint Venture by seconding engineering and project management personnel directly into the JV team including myself in the capacity of Construction Manager………… What really set Direct Inject apart was their flexibility. When we needed them to scale up their workforce at short notice during critical construction phases, they made it happen. Equally importantly, they could scale down when required without complications.”

Operations Director – Jagcon, 2025

“Direct Injects reputation as experts at repairing leaks in underground structures is well deserved. I have worked with them on multiple tunnelling projects, and have consistently been impressed with their results”

Project Manager – Acciona, 2025

“I have worked with Direct Inject on multiple projects across Sydney. The expertise, quality and resources their team provides has always ensured successful project outcomes. Their crews embed themselves seamlessly into the project team and always strive to hit the aggressive targets we set them”

Project Engineer – Gamuda, 2025

“I worked with Direct Inject throughout the entire delivery phase of the Western Sydney Airport SBT project. Their team played a significant role in the project achieving most of its critical portion handovers and their willingness to really become an extension of our engineering team rather than just a labour hire contractor was refreshing.”

Area Manager – CPB Contractors, 2024

“I have utilised Direct Inject on two Major Projects in Sydney and in different capacities. Firstly, PU Injection and secondly robotic hydro demolition. What impresses me the most is their no fuss attitude and commitment to getting the right outcome for their Client. In both instances they have delivered and exceeded on what has been expected. I’ll certainly be engaging their services again”

Project Manager – John Holland, 2025

“JAGCON Group directly assisted the head contractor CPB Contractors & Ghella Joint Venture by seconding engineering and project management personnel directly into the JV team including myself in the capacity of Construction Manager………… What really set Direct Inject apart was their flexibility. When we needed them to scale up their workforce at short notice during critical construction phases, they made it happen. Equally importantly, they could scale down when required without complications.”

Operations Director – Jagcon, 2025

DO YOU REQUIRE OUR
SKILLS AND
EXPERTISE?

Call Us (02 7239 0808) Contact Us

/ other services

CONCRETE REPAIR

CONCRETE STRENGTHENING

CONCRETE REMOVAL

COMPLEX SOLUTIONS

Ground Treatment
& Injection.

Ground Treatment.