Leaks & Cracks

Concrete provides structures with strength, rigidity, and resilience from deformation. These characteristics, however, result in concrete structures lacking the flexibility to move in response to external, environmental or volume changes.

When these changes exceed the concrete’s maximum tensile strength, cracking occurs.

Once the reason for the crack has been determined, the appropriate action can be taken, whether it’s leaving the crack alone, injecting the crack with the appropriate material, or applying other suitable repair methods.

Void Filling & Contact Grouting

The repair of large voids in concrete segment linings can be difficult at the best of times. Repairs involve a team of experienced injection technicians and a range of equipment to carry out the repairs effectively. Head to the Procedures page for a detailed walkthrough on the repair of high flow water or large voids in concrete segment linings.

BluRez CSW is a water-reactive, single component, hydrophobic polyurethane designed to stop the ingress of high water flow. BluRez CSW comes with a catalyst to determine the speed of reaction. It is ideal for cracks up to 10mm thick.

Products

BluCem HS200A Product ImageBluCem HS200A
PT CABLE GROUT ADDITIVE
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BluRez CSW Product ImageBluRez CSW
WATER STOPPING POLYURETHANE RESIN
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Crack Injection
Crack injection is the process of pumping grout or resin into a void to fill cavities. Injection works are typically carried out to aid waterproofing or to prevent corrosion or excessive pressure on concrete structures.

Cracking in a tunnel environment occurs in the hardened preformed segments due to water pressure, weight loading or settling of the segments into a newly bored tunnel. When voids and leaks are present in a tunnel, it’s best to contact Bluey to discuss which product will aid the situation best. We’ve developed a range of resins and epoxy solutions including high foaming, fast setting and water-reactive products.

Products

BluRez CSW Product ImageBluRez CSW
WATER STOPPING POLYURETHANE RESIN
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BluRez CS150 Product ImageBluRez CS150
HYDROPHILIC POLYURETHANE INJECTION RESIN
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BluRez Epoxy 111 Product ImageBluRez Epoxy 111
HIGH PENETRATION EPOXY RESIN
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BluRez Epoxy 575 Product ImageBluRez Epoxy 575
HIGH BOND STRUCTURAL ADHESIVE EPOXY
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Structural Crack Repair
For structural crack repair in tunnels and underground applications, our partners often choose BluRez 111, a high-penetration, structural epoxy resin.

The product is best used for structural injection and grouting repairs, however, it can also be used for general concrete repairs, as a primer for porous concrete or as a sealer for floor toppings.

BluRez Epoxy 111 is a two component epoxy liquid which requires only mixing to form a low viscosity injection resin.

Products

BluRez Epoxy 111 Product ImageBluRez Epoxy 111
HIGH PENETRATION EPOXY RESIN
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Waterstopping
The compartmentalisation of a waterproofed structure limits the spread of leaks if a membrane is damaged during its service life. Bluey Engineers adhere to International Standards for spacing, looping and continuity of waterstop to provide long-term assurance and minimise water damage and safety risks for our partners.

We’ve developed a number of URG and UCG waterstops for a variety of applications. We recommend discussing your project’s unique requirements with Bluey Engineers to assist in the correct product selection.

Products

Waterstops & Sealing Systems Product ImageBluSeal URG Waterstop
PVC UNIVERSAL REAR GUARD WATERSTOP
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Waterstops & Sealing Systems Product ImageBluSeal UCG Waterstop
PVC UNIVERSAL CENTRE GUARD WATERSTOP
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Waterstops & Sealing Systems Product ImageBluSeal Superstop 47B
47B HYDROPHILIC BUTYL WATERSTOP SEAL
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