Glebe Island Wharf 1 – Sydney Ports
Location:
Sydney
Country:
Australia
Project Type:
Civil / Infrastructure | Marine
Project Scale:
10,000 m² +
Adding Life to Concrete – How MARKHAM protected an at-risk marine structure.
OBJECTIVE
This ageing wharf, in the heart of Sydney, was under review in 2014 for potential development. It had previously been used for loading salt; so not only was the deck at risk from the marine environment, but its past use had also aggravated the situation.
SOLUTION
AQURON 2000 spray-applied hydrogel treatment was used. A small all-terrain vehicle was adapted to assist in dealing with the large area involved.
At one point, the work was interrupted by a security site closure. This tragically related to the Lindt episode, but the Glebe worksite was never at risk at any time.
RESULTS
The wharf deck has had considerable development constructed on it and remains in good condition.
Project Details | |
Area Treated | 11,700 m2 |
Age of Structure | 50 years+ |
Condition of Structure | Overall condition consistent with age. Concrete was pressure cleaned to remove any impediment to the application. Concrete surface pre-wet to ensure sufficient moisture content for the catalytic process. |
Treatment Time | 6:00am to 6:00pm over 5 days. |
Weather Conditions | Favourable during entire process. |
Operation Downtime / Interruptions | Application was successfully arranged so there was no interruption to scheduled use of the wharf. |
Application Method | High-pressure sprayer, mounted on ATV for efficiency of coverage. |
Comparative Testing | Test samples taken before and after treatment, assayed by an independent laboratory, to confirm effectiveness of chloride control. |
Proposed further works | No further works by MARKHAM proposed |
OHS requirements | Hydrogel treatment is nil VOC. No product-specific PPE required. Site was able to be isolated from the public. Traffic control was not required. Safety barriers were used to designate the work area. |
Environmental requirements | Silt socks were used to prevent run-off into drainage apertures. This related to any concrete residue removed by water-blasting, rather than to the product application. |
