Marine Construction
Dock hydro-demolition, piling restoration, and concrete prep.
Dock hydro-demolition, piling restoration, and concrete prep.
Marine Civil Engineering & Heavy Construction
Dock hydro-demolition, sheet piling restoration, concrete scarification, and cofferdam desilting.
Marine civil contractors building piers, drydocks, bridge pilings, and canal retaining walls require precision concrete removal and surface preparation that preserves structural integrity.
Chow Marine delivers robotic and manual hydro-demolition services that remove deteriorated concrete, marine biofouling, and rust while leaving underlying rebar undamaged and ready for bonding new concrete.
Unlike jackhammers and mechanical breakers, ultra-high-pressure hydro-demolition induces zero micro-cracking into sound parent concrete. The water jet selectively removes compromised concrete while providing an exceptional fractured surface profile (CSP 7-10) that maximizes the bond strength of polymer overlays and marine grouts.
Our marine crews also operate heavy barge-mounted desilting pumps and diver-assisted jetting lances to clear cofferdams, caissons, and driven sheet piles, allowing underwater concrete pours to anchor directly to clean bedrock or sound footing.
Acoustic Sounding & Survey
Chain dragging and acoustic sounding to delineate areas of concrete delamination, rebar spalling, and marine growth.
Robotic Hydro-Demolition
Programming automated track-mounted hydro-demolition robots to selectively strip damaged concrete to specified depth.
Rebar Descaling & Profiling
Water jetting exposed rebar to bare metal without bending or damaging reinforcement cage bars.
Slurry Neutralization & Clearing
pH monitoring, mobile solids settling, and clean return of filtered water to regulatory standards.
| Demolition Depth | Up to 300mm in 50 MPa Concrete |
| Surface Profile | ICRI CSP 7 – CSP 10 |
| Micro-Cracking | Zero Induced Damage |
| Rebar Preservation | 100% Intact / Cleaned |
| Barge Mobilization | Great Lakes & St. Lawrence |
Hamilton Port Commercial Pier Rebar & Concrete Rehabilitation
Hydro-demolition of 650 square meters of salt-damaged concrete along an active container vessel berthing bulkhead.
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Why is hydro-demolition preferred over jackhammers for marine concrete repair?
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Why is hydro-demolition preferred over jackhammers for marine concrete repair?
Jackhammers cause micro-fracturing in surrounding sound concrete and can shatter the bond between rebar and concrete throughout the structure. Hydro-demolition eliminates impact shock, cuts cleanly, and exposes clean rebar with an ideal bonding surface.
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How is high-pH runoff water managed around marine waterways?
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How is high-pH runoff water managed around marine waterways?
Concrete hydro-demolition runoff has an elevated pH. Chow Marine deploys automated mobile CO2-dosing water treatment units that continuously neutralize the effluent to a neutral pH 6.5-8.5 before discharge.
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Can your team operate from barges in active shipping channels?
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Can your team operate from barges in active shipping channels?
Yes. We maintain fully self-contained barge packages with integrated power, fuel, UHP pumps, and safety vessels configured for working in high-traffic commercial ports.
Ready To Mobilize Crew & Tooling?
Connect directly with our Hamilton operations superintendent for emergency rapid mobilization, site evaluation, and firm engineering proposals.