Appleton Drive Bridge Repairs
About the project
Due to the infrastructure assets being in a saltwater environment, various problems had arisen including concrete cracking, spalling and steel corrosion attributed to alkali-silica reaction (ASR). Pensar was engaged for the reparation of three separate bridge and culvert structures.
Key Capabilities
Concrete spall repair, concrete crack repair, cleaning of bridge components, structural strengthening
Project Location
Yeppoon, Queensland
Client Name
Livingstone Shire Council
Project Duration
October 2020 - December 2020
Project scope
- Expose, treat and repair cracks and underlying reinforcement on bridge piles
- Form and pour reinforced concrete jackets around the bridge piles to resist further ASR cracking
- Expose, treat and repair cracks and spalls and underlying reinforcement on underside of bridge deck and culverts
- Pour/hand pack repairs that had been exposed with high strength grout
Challenges
- Considered timing for planned works was required due to varying tides
- Working in high traffic areas required logistical consideration
- Were required to adhere to strict environmental precautions due to working in a water environment with large amounts of flora and fauna
- Accessing infrastructure assets over water and muddy creek beds
Achievements
- Pensar developed a system to work with the tidal water and effectively moved (pumping and channelling) water around with minimal disturbance to the environment and the local community
- Specific products for this project were sourced (including underwater grout and non-deteriorating form tube) that were environmentally friendly and would withstand the surrounding conditions
- Adjusted the concrete patch repair techniques accordingly on each repair to get the best outcomes in strength and visible finish
