Fabric Reinforced Cementitious Matrix (FRCM)

WHY JSMS FRCM BEATS TRADITIONAL Carbon fiber reinforced polymer (CFRP)

Traditional CFRP uses a pure polymer (epoxy resin) to glue a solid sheet of carbon fiber to concrete. While it has immense tensile strength in a laboratory, it fails in the real world due to moisture, heat, and substrate incompatibility.

By using a Carbon Fiber Net (Open Grid) combined with JSMS Patented Ultra-High Cementitious Epoxy, you solve the four biggest causes of retrofitting failure (FRCM).

Technical Pillar 1: Vapor Permeability (The "Breathability" Factor)

  • The Flaw of CFRP: Pure epoxy resin and solid carbon sheets create an impermeable vapor barrier. In a tropical, high-humidity country like the Philippines, moisture vapor from inside the concrete tries to escape, hits the CFRP barrier, and causes hydrostatic pressure. This leads to blistering and catastrophic delamination (peeling) of the carbon fiber.

  • The JSMS FRCM Advantage: Our cementitious epoxy matrix combined with an open-grid carbon net is breathable. It allows moisture vapor transmission to pass through the system while blocking liquid water. The bridge or column does not suffocate; it breathes, permanently eliminating the risk of vapor-induced delamination.

Technical Pillar 2: The "Wet Substrate" Reality

  • The Flaw of CFRP: Traditional pure-epoxy CFRP requires a bone-dry concrete substrate (moisture <4%). If you apply it to a damp bridge pier in Region 4, the bond fails immediately.

  • The JSMS FRCM Advantage: Infrastructure in the Philippines is rarely dry. Our patented cementitious epoxy is hydrophilic during application—it thrives on damp concrete. We can retrofit active civil structures, retaining walls, and bridge abutments without waiting weeks for the concrete to dry.

Technical Pillar 3: Mechanical Interlocking vs. Surface Glue

  • The Flaw of CFRP: Solid carbon sheets rely 100% on surface chemical adhesion. If the top 2mm of the concrete is weak, the entire CFRP sheet rips off under load (cover peeling).

  • The JSMS FRCM Advantage: We use a Carbon Fiber Net (Grid). Our ultra-high-strength cementitious epoxy pushes through the openings of the grid, encapsulating the carbon strands and fusing directly with the host concrete. This creates a Mechanical Interlock, not just a chemical glue. The net is physically locked inside a monolithic cementitious armor.

Technical Pillar 4: Thermal Compatibility & Fire Resistance

  • The Flaw of CFRP: Pure epoxies have a low Glass Transition Temperature (Tg) — usually around 60°C to 80°C. In the event of a vehicle fire under a bridge, or extreme UV heat, the polymer softens, and the bridge instantly loses its structural reinforcement.

  • The JSMS FRCM Advantage: Cementitious materials are inherently fire-resistant. The JSMS cementitious epoxy acts as a thermal shield, protecting the carbon fiber net from high temperatures and UV degradation. Furthermore, its coefficient of thermal expansion perfectly matches the host concrete, meaning they expand and contract together, preventing thermal shear stress.

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