Public Transport Authority

Concrete repair, crack injection and diagnostic inspection

Public Transport Authority (PTA)

1 view of tunnel area

Description

BUSS was engaged by the Public Transport Authority to conduct inspections and testing to the roof of the tunnel at their facility in East Perth. The tunnel had presented with evidence of historical water ingress damage in the form of stalactites and rust staining to the soffit.
Based on a visual inspection, complimented by specific testing by a Structural Engineer, BUSS developed a condition report which summarised the existing condition of the tunnel’s roof. BUSS undertook a full concrete breakout of the damaged areas, exposing the reinforcing steel, proceeded to remove the damaged concrete, clean the reinforcing steel and then apply protective coatings; the concrete cover was then reinstated with the application of repair mortar. Additionally, BUSS undertook an inspection of the existing stormwater lines to confirm the location and extent of blockages. BUSS resolved the blockage issue through the use of high pressure cleaning and back washing.

2 damage to concrete
Figure 2: Damage to concrete
3 damaged area concrete repair
Figure 3: Damaged area concrete repair

PROJECT INFO

PROJECT MANAGER:

Marc Cugini

PRODUCT USED:
  • Parchem HB40
  • Parchem NitoFill LV
HIGHLIGHTS:
  • Core samples were taken and testing conducted at an accredited NATA laboratory to determine chloride content and depth of carbonation;
  • All work was completed with no interruption to facility operations; and
  • A long-term water ingress issue was resolved.

LOCATION

Summers Street, Perth WA

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