Concrete Repair

Epoxy Restoration specializes in Concrete Repair, including epoxy injection, concrete spall repairs, coatings and waterproofing.

• Coating - Coatings protect concrete and steel from moisture intrusion. They also provide waterproof barriers against moisture infiltration. Colored coatings enhance the beauty of a structure. They can also remedy slippery surfaces and make them easier to clean. We install clear sealers, very strong epoxy and urethane industrial coatings as well as decorative epoxy terrazzo and quartz floors.
• Injection - Crack Injection has the ability to provide a full depth weld to cracked concrete that is much stronger than the orginal bond. Epoxy injection is not only a good structural repair, it is a great way to seal off cracks from leaking water. Not only simple cracks but also high pressure water leaks in pipes and manholes. See our specification page for procedures.
• Grout injection effectively fills voids underneath slabs, in hollow walls and behind walls. Soils can be stabilized and solidified with microfine and chemical resin grouting.
• Spall - Spall damage can occur from impact but mainly from rebar rusting and expanding inside concrete. The result is ruptured areas of concrete at the areas of rusting rebar. Spalling can become a "cancer" like growth as more and more concrete ruptures and exposes more rebar to moisture. See our specification page for procedures.

A. Spall repairs Koko Isle Bridge Hawaii Kai

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Spalls chipped out. Concrete and rebar cleaned by power wire brushing. Exposed rebar treated with "Extend" rust neutralizing coating.

Voids coated with epoxy bonding agent and filled with Thorite Rapid Vertical patching cement. After cure surfaces were finish coated with "Profinish" cement wash.

B. FMC East Oahu Dialysis Clinic Kapahulu, Oahu

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Floor cracks repaired by gravity epoxy injection. Floor then shot blasted to clean.

Primer and base coat of epoxy resin and terrazzo chip broadcast.

Clear finish resin applied to create a finished, seamless epoxy terrazzo floor. Looks just like a granite slab.

C. King St. Union 76 Service Station.

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Floor scarified and shot blasted. Cracks repaired using epoxy gravity injection. Leveling of floor by epoxy paste.

Finished floor, seamless Sikagard 62 epoxy coating with non-slip aggregate added.

D. Replaster and recoat of Dillingham Fountain, Waikiki.

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Entire fountain water blasted with 20,000 psi super high pressure to remove existing scaling cement and old coatings. We then replastered the entire fountain with Thoroseal waterproofing cement.

Pool was then coated with many coats of Ramuc underwater epoxy coating.

E. Strucutral cracking to Waikiki High Rise buttress.

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Cracks were cleaned by water blasting and compressed air dried. Propoxy 300 epoxy surface sealer goes over the cracks with plastic ports drilled in at intervals. Cracks injected with Propoxy 100 injection resin until filled.

Buttresses pick up severe tower loads requiring a high strength repair like epoxy injection to provide a full depth weld.

F. Ceiling crack repairs to the Ihilani Hotel, Oahu

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Major scaffolding work required over ponds.

Thousands of lineal feet of epoxy crack repairs required to repair plaster ceilings.

Painters and crack repair men on scaffolding above shark ponds.

G. Large scale edge spalling at Pali Palms Building.

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Sandstone concrete is very porous allowing extensive moisture penetration into the structure causing large scale rebar rusting and resulting spalling.

After chipping out and surface treatment, spalls are filled with Thorite Rapid Vertical high strength patching cement.

High work requires hanging platform scaffolding.

Because the sandstone cement is so porous repairs are coated with a matching acrylic coating to keep future moisture out.

H. Marco Polo apartments water bridge.

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Bridge structure was meant to provide a decorative pond sculpture where high tide waters would flow through concrete channels. However, the channels had too much rebar close to the concrete surface.

Loose concrete is chipped out and surfaces cleaned. Channels are formed and filled with concrete.

  

Repairs are then coated with epoxy under water coating.

  

I. Tank salvage, rum and ethanol plant, Kapolei.

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Salvaged steel plantation tanks dug out of the ground. Tanks were tar coated to protect from rust.

Tanks were sandblasted inside and out. Epoxy primer is installed just after blasting.

Tanks finish blasted ready to be used for water storage.

Inside plant, fermenting tanks coated with epoxy and urethane coatings.

J. Kalakaua Bridge major restoration, Waikiki

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Hundreds of square feet of spalls on total face of building. Hundreds of ceiling cracks were filled with epoxy and clear coated. Work accessed by hanging scaffolding. Spalls filled with Thorite Rapid Vertical cement.

Water blasting and some epoxy crack repairs.

Entire bridge coated with Thorowall. Surface still looks good after two decades.

K. Tunnel wall leaks, Schofield Barracks fresh water pump station.

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Access to pump chambers is over one quarter mile under ground. Chambers accessed by miners car on train tracks. Pumps are just above Oahu’s Aquifer. Leaks are under severe pressure due to weight of water pushing against chamber walls many hundreds of feet below ground. This kind of epoxy injection requires high pressure pumps.

Hundreds of feet of injection performed in chambers. Surfaces painted as repairs progress.

L. Patisserie Bakery, King Street Honolulu fire damage repairs

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Floors severely charred from fire requiring shot blast clean.

Floors partially coated, this floor with water based low fume epoxy coating.