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Concrete Restoration
Post-Tension Cable Replacement
Waterproof Membrane
Carbon Fiber Reinforced Concrete

Concrete Restoration

Concrete specialists in all types of  masonry based facade restorations from single story to multi story buildings.

With client/authority/contractor planning and strict attention to Safety requirements, together with a focus on quality control, Concrete fix provides the crucial elements for a successful restoration, on time and within budget.

Post-Tension Cable Replacement

We pride ourselves on offering efficient post-tensioning system investigation and cable replacement services.

Corrosion is a common problem for unbonded post-tensioned cables exposed to moisture and aggressive environments. Insufficient concrete cover over the cables, lack of waterproofing at anchorages and errors made during initial construction can lead to widespread corrosion problems within post-tensioning systems. It is possible for corrosion to advance to the point where cables break and lower the strength of the concrete floor.

Miyagi Construction can assist with an inspection of your post-tensioning system by chipping small inspection recesses into the underside of your concrete slab and exposing small portions of cables for review. Exposed cables can be reviewed at inspection recesses to check for corrosion and to see if they are broken. If broken cables are found, Miyagi Construction can replace them with new, fully-tensioned cables.  Miyagi Construction can also review your structure and complete appropriate waterproofing upgrades that will reduce further corrosion related deterioration within your post-tensioning system.    

Barrier cables used in parking garages are similar to post-tension cables in concrete slabs and are subject to similar deterioration mechanisms. In some cases the failures occur quicker since the cables are directly exposed to the elements and do not have the added protection provided by concrete cover. Replacing barrier cables and anchors requires the same expertise as repairing post-tension tendons.


How to identified Post-Tension Cable Problem

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Structural Repairs

These repairs address system failures. Signs of structural post-tension system distress disclosed in the inspection can include the following and will require immediate repairs to restore strength and integrity to the structure:

  • Broken strands which can be seen coming out of the structure
  • End anchorage which has lifted out of the concrete
  • Cracking concrete which is running parallel to the strands
  • Excessive deflections
  • Punching shear cracks in slabs
  • Diagonal shear / flexure cracks in beams and joists
Preventative Maintenance

Regular inspection of strand systems for signs of distress is one of the best ways for a building owner to prevent costly repairs. Items to be considered in the inspection of post-tension structures:

  • Appropriate concrete cover over strands exposed to aggressive environments
  • Condition of protective grease and sheathing
  • Cracking near strands (P-T systems are designed to reduce or eliminate cracking, so any excess cracking may indicate a problem)
  • Condition of concrete at anchorage pockets
  • Rust staining on the concrete near strands
  • Grease staining on slab soffits

polyurethane crack injection

We have the expertise and the know-how to bring unique solutions to every Project concern.

So which material is better for repairing concrete cracks: epoxy or polyurethane foam? The answer isn’t always clear-cut. In many cases, either material can accomplish the task, and applicators may simply choose the material they have the most experience with. But here are some general guidelines: If the crack needs to be structurally repaired and the area needs to be as strong or stronger than the concrete around it, use an epoxy. If the crack needs to be repaired only to prevent water leakage or the crack is actively leaking, a polyurethane is usually the best choice.

Epoxy Floor

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The ways to use epoxy floor coating

Epoxy resin floor coatings can be used for three different applications: a primer on concrete to even it out, an undercoat to be covered with a carpet or the like, and a decorative top coat. Epoxy coatings are a stalwart part of the coating industry because epoxy resin has many beneficial properties that make it suitable for many applications – especially floors. Below are several properties that make epoxy resin flooring a coating of choice for almost any floor.

Floor coating

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(778) 513-7471 (236) 888-5957
9319 univercity cr Burnaby Bc
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