Project Overview
Location: Vero Beach, FL
Contractor: Ram Jack Foundation Repair of Florida
Structural Consultant & Product Supplier: Structural Reinforcement Solutions (SRS)
Scope: Post-tensioned slab reinforcement and shear strengthening
The Challenge: Structural Deficiencies in a Post-Tensioned Slab
A large commercial structure under construction in Vero Beach, FL faced significant structural deficiencies due to misaligned post-tensioned tendons, leading to excessive flexural stress and punching shear concerns. The slab was at risk of failure at support locations, and traditional repair methods—such as drop panels—were considered but deemed impractical due to cost and disruption.
The property owner needed a fast, effective, and non-invasive strengthening solution that could restore structural integrity without extensive demolition or prolonged downtime.
The Solution: CFRP for Strength & Longevity
To address the deficiencies, SRS designed and supplied a comprehensive carbon fiber reinforcement plan, utilizing:
SRS-600UNI Unidirectional Carbon Fiber for flexural strengthening.
SRS-660BI Bi-Directional Carbon Fiber in select areas for shear reinforcement.
Surface preparation and bonding techniques to ensure long-term adhesion and durability.
This externally bonded CFRP system provided a cost-effective, non-invasive solution, significantly enhancing slab capacity while minimizing disruption to the facility.
Step-by-Step Post-Tensioned Slab Repair with CFRP
1. Condition Assessment & Engineering Support
📌 Structural Analysis & Inspection
- Engineers identified flexural stress and punching shear issues at slab support locations.
- Load calculations determined which areas required CFRP reinforcement for additional capacity.
📌 Customized Repair Plan
- SRS developed a targeted CFRP strengthening strategy, ensuring a balance of flexural and shear reinforcement while keeping material usage efficient.
- Consideration was given to bond strength, anchoring techniques, and long-term performance.
🔗 Learn more about SRS Engineering & Product Support https://www.structuralrs.com/services/engineering
2. Surface Preparation & CFRP Application
📌 Surface Preparation for Optimal Bonding
- Concrete surfaces were ground and cleaned to remove contaminants.
- Any damaged concrete areas were patched to create a uniform bonding surface.
📌 Primary Flexural Strengthening
- SRS-600UNI Carbon Fiber was applied to high-stress areas to increase flexural capacity and reinforce critical load paths.
📌 Targeted Shear Reinforcement
- In areas requiring shear strengthening, SRS-660BI Bi-Directional Carbon Fiber Wraps were installed to enhance load transfer and durability.
📌 Load Transfer Considerations
- CFRP strips were anchored beyond rebar locations to ensure proper load distribution and long-term stability.
🔗 Explore SRS Carbon Fiber Strengthening Solutions https://www.structuralrs.com/structural-strengthening-products/cfrp
The Results: A Stronger, More Resilient Structure
✅ Restored Structural Integrity – Addressed both flexural deficiencies and shear concerns, bringing the slab back to full strength.
✅ Minimal Disruption – No heavy demolition, reducing downtime and costs.
✅ Significant Cost Savings – CFRP reinforcement provided a faster and more cost-effective alternative to traditional repairs.
✅ Long-Term Durability – CFRP extends the lifespan of the structure, ensuring lasting performance under high loads.
📖 Read or download the full case study here:
Why Choose CFRP for Post-Tensioned Slab Repairs?
Carbon fiber reinforcement is revolutionizing structural repairs by offering:
🔹 Strength Without Weight – CFRP is stronger than steel yet lightweight and easy to install.
🔹 Non-Invasive Installation – No major demolition required, reducing costs and downtime.
🔹 Superior Durability – Resists corrosion, fatigue, and environmental wear for long-term reliability.
🔗 Discover SRS Non-Invasive Strengthening Solutions https://www.structuralrs.com/services/structural-repair
Conclusion
This case study highlights how carbon fiber reinforced polymer (CFRP) is an effective, high-performance solution for post-tensioned slab repair. By utilizing SRS-600UNI and SRS-660BI CFRP, the structure was restored to full capacity without invasive modifications, and major delays in construction, ensuring durability, cost savings, and long-term strength.
For more case studies, repair methods, and engineering solutions, visit our CFRP Case Study Library:
Frequently Asked Questions (FAQs)
❓ What is post-tensioned slab repair?
Post-tensioned slab repair is the process of reinforcing a concrete slab that contains post-tensioned tendons. This repair often involves the use of carbon fiber reinforced polymers (CFRP) to increase flexural and shear strength while minimizing demolition.
❓ Why use carbon fiber for post-tensioned slab repairs?
Carbon fiber reinforcement (CFRP) is stronger than steel, lightweight, and non-corrosive. It restores structural integrity without requiring heavy demolition, making it an efficient solution for post-tensioned slabs.
❓ How long does carbon fiber reinforcement last?
Carbon fiber reinforcement is designed for long-term durability, often lasting decades when properly installed. It resists environmental degradation and maintains structural performance over time.