Hydro demolition for railway and infrastructure projects
Dezu is the specialized concrete-removal subcontractor on Philippine rail and major infrastructure — robotic and hand-lance hydro demolition that takes out honeycombing and defective pours while preserving reinforcement. Delivered on an underground railway, a railway depot, and viaduct pillars, under international joint-venture chains.
What does Dezu do on railway and infrastructure projects?
Selective concrete removal that impact methods cannot do safely: honeycombing and defective pour removal with reinforcement preserved, on underground railway walls, depot beams, and viaduct pillars. Delivered robotic (Conjet) and precision hand-lance, as the specialized subcontractor to international construction joint ventures.
Why do rail projects specify hydro demolition?
Because the rebar must survive. Defective concrete on structural elements has to come out completely without microcracking the sound concrete or damaging reinforcement — jackhammers do both. Ultra high pressure water removes only the concrete, leaves steel intact, and produces a bonding surface ready for re-pour, which is what the re-pour inspection wants to see.
Which infrastructure scopes has Dezu delivered?
Robotic removal of honeycombing from an underground railway double-cell wall (legs 1.6 m thick, slabs 1.2 m); level-5 beam honeycombing repair at a railway depot for a Japanese general contractor JV, without damaging reinforcements; and defective pour removal on viaduct pillar tops for a major infrastructure joint venture.
Relevant proof
Robotic Hydro Demolition — Underground Railway Double-Cell Wall (2024)
Legs 1.6 m thick, slabs 1.2 m — honeycombing removed by Conjet robot. Full case study.
Beam Honeycombing Repair — Railway Depot (2023)
Level-5 slab and beam honeycombing removed without damaging reinforcements, for a Japanese GC joint venture.
Viaduct Pillar Defective Pour Removal (2024)
Bad pour removed from pillar tops connecting to viaducts. Register at projects.
Concrete defect on a rail or infrastructure package?
Send drawings, photos, and the removal spec. We reply with a method recommendation — robot, hand lance, or both — and a scope-based quotation.