What causes concrete spalling in Florida?

In Florida, the primary cause of spalling is 'concrete cancer' or rebar corrosion. Salt air and moisture penetrate the concrete, causing the internal steel reinforcement to rust and expand, which cracks the surrounding concrete.

When is epoxy injection used for concrete repair?

Epoxy injection is used for structural cracks that are 'dormant' (not moving). It welds the concrete back together, restoring the original structural strength of the element.

What is Carbon Fiber Reinforcement (CFRP)?

CFRP is a modern method of strengthening concrete beams, columns, and slabs. Thin strips of high-strength carbon fiber are bonded to the exterior to increase load capacity without adding significant weight or bulk.

How do you treat rusted rebar during restoration?

We chip back the concrete to expose the rust, clean the steel to a near-white finish, apply a zinc-rich anti-corrosion primer, and then patch with high-strength structural mortar.

Can a structural concrete repair be waterproofed?

Yes. After the structural repair is complete, we typically apply a silane/siloxane sealer or a crystalline waterproofing coating to prevent future moisture and chloride penetration.

Structural Concrete Repair & Restoration Florida | Spalling & Reinforcement

Our Restoration Specializations

Concrete Spalling Repair

Excavating damaged sections, cleaning corroded rebar, and applying structural patches to restore integrity to columns and balconies.

Epoxy & Urethane Injection

High-pressure injection to seal structural cracks, stop water leaks, and weld concrete segments back into a monolithic unit.

Carbon Fiber Strengthening

Utilizing CFRP wraps to increase the load-carrying capacity of existing concrete members without intrusive construction.

Post-Tension Cable Repair

Specialized splicing and re-stressing of damaged or corroded post-tensioned tendons in commercial slabs and parking decks.

Corrosion Mitigation

Application of migrating corrosion inhibitors (MCI) and sacrificial anodes to protect internal rebar from further oxidation.

Parking Garage Restoration

Comprehensive overhaul of expansion joints, deck coatings, and structural supports in multi-level commercial garages.

Critical Maintenance Services

Expansion Joint Replacement

Installing high-movement watertight seals to allow buildings to expand and contract without structural cracking.

Foundation Underpinning

Stabilizing structures that have settled due to sinkholes or poor soil compaction through piering and grouting.

Crystalline Waterproofing

Deep-penetrating coatings that react with moisture to form insoluble crystals, permanently sealing concrete pores.

Beam & Header Restoration

Restoring the structural capacity of rusted lintels and sagging headers above windows and commercial bays.

Seawall Cap Restoration

Specialized repair of salt-damaged concrete caps on waterfront properties to prevent wall failure.

Saving the Skeleton of Your Building

Structural concrete repair is a high-stakes endeavor. A simple "patch" is never enough when the internal steel is compromised. At LTC Builders, we understand the chemistry of concrete. We ensure that the thermal expansion coefficients of our repair mortars match your original concrete to prevent future delamination.

Our process involves precision demolition, rigorous surface preparation, and the use of polymer-modified mortars that offer superior bond strength and low permeability. We don't just fix the symptom; we identify the root cause—be it carbonation, chloride attack, or structural overloading—to ensure the repair lasts for the life of the building.

Our Restoration Methodology

Sounding & Mapping: Using hammer sounding or GPR to locate hollow, delaminated, or corroded areas.
Mechanical Chipping: Removing degraded concrete until "sound" substrate and clean rebar are reached.
Rebar Restoration: Sandblasting or wire-wheeling rust and applying sacrificial anodes for cathodic protection.
Bonding Agent Application: Applying epoxy or cementitious bonding agents to ensure a monolithic connection.
Precision Grouting: Form-and-pour or hand-applied structural mortar placement per engineering specs.
Protective Overlays: Final application of breathable traffic coatings or sealers to block future contaminants.

FAQ

Cracks wider than 1/8 inch, cracks that span the entire depth of a beam/column, or cracks accompanied by rust stains usually indicate structural distress.

Yes. Through methods like carbon fiber wrapping and epoxy injection, we can often restore or even exceed the original design strength without full demolition.

Carbonation is a chemical reaction that lowers the pH of concrete, destroying the protective layer around the rebar and leading to rapid corrosion.

Chloride ions from salt air migrate through concrete pores. Once they reach the rebar, they act as a catalyst for rust, even in the absence of direct water contact.

Most structural epoxies reach initial set in 2-4 hours and full structural cure within 24 hours, depending on ambient temperature.

When performed to ICRI standards and combined with a proper waterproofing maintenance plan, a structural repair can last 20+ years.