Mahtecsa specializes in structural strengthening and seismic rehabilitation, providing FRP system design and installation for concrete buildings, industrial structures and civil engineering projects. We focus on sound engineering and execution: each project begins with structural analysis, followed by selection of the most suitable strengthening method, using FRP fibers or combined systems.
The combination of hands-on experience, engineering-driven management, and a commitment to quality enables Mahtaksa to deliver projects with precision, predictability, and consistent adherence to standards.
| Effective factor | Expert explanation | Impact on price |
|---|---|---|
| Type of FRP fibers | Choice between CFRP (carbon), GFRP (glass) or AFRP (aramid) | Very high (CFRP is more expensive and stronger) |
| Thickness and number of layers | Increasing the number of layers increases load-bearing capacity and material consumption. | Direct and incremental |
| Structural member type | Columns, beams, slabs, or shear walls each have different designs and uses. | Medium to high |
| Concrete surface conditions | The extent of damage, the need for repair or surface preparation | Medium |
| Project area and scale | Large projects usually have lower unit costs. | Reverse (economies of scale) |
| FRP type | Parent Property Feature | Cost level |
|---|---|---|
| CFRP (Carbon Fiber) | Highest strength and high modulus | $$$ – Expensive |
| GFRP (Glass Fiber) | Economical and widely used | Medium |
| AFRP (Aramid) | High impact resistance, special application | Low Medium High |
For installation projects, the final price is not a fixed figure. It is determined after assessing the structure, damage type and required strengthening scope. Cost estimates are therefore generally prepared after a site visit and engineering analysis.
Submit your request, and the technical team at Fater Sazeh Iranian will conduct an initial review of your project and contact you as soon as possible to provide consultation and further details.
FRP is a modern method of concrete strengthening that increases member load-bearing capacity without increasing building dead load. High-tensile-strength polymer fibers are installed on the concrete surface with epoxy resin, forming a strengthening layer.
FRP can be installed quickly using a dry process without heavy construction work, making it particularly suitable for projects that remain in use.
In many projects, strengthening can be performed without substantial demolition of structural elements, reducing additional costs and allowing continued building use during installation.
FRP increases structural member flexural, shear and compressive strength without changing section dimensions, a critical benefit in confined architectural spaces.
FRP fibers, particularly CFRP, resist corrosion, moisture and chemicals, extending strengthening system service life in corrosive environments.
FRP fibers, particularly CFRP, resist corrosion, moisture and chemicals, extending strengthening system service life in corrosive environments.
FRP systems, particularly their resin component, are sensitive to temperature increases. At high temperatures near the resin’s glass transition temperature, mechanical performance may decline. Fire-resistant coatings are therefore essential in some projects.
FRP performance depends heavily on correct installation. Even small errors in surface preparation, resin mixing or fiber placement can substantially reduce strengthening capacity or cause premature failure.
Inadequate surface preparation or improper design may cause the FRP layer to separate from concrete. This is a major failure mode that must be controlled through design and installation.
Unlike ductile steel, FRP fails in a brittle manner without substantial deformation. Design must therefore use safety factors and precise strain control.
Recognized national and international references and codes are essential for FRP strengthening design and installation. Brittle behavior and dependence on bonding require accurate, controlled design.
ACI 440.2R is the principal internationally recognized reference for designing, analyzing and installing FRP strengthening systems for reinforced concrete structures. It covers flexural and shear capacity, column confinement, effective FRP strain control and prevention of premature failures such as debonding.
Seismic strengthening projects use rehabilitation guidelines alongside FRP standards to assess existing structural conditions, vulnerability and the desired performance level. These guidelines help determine strengthening type and extent.
For integrated design, reinforced concrete member requirements are considered alongside the FRP system, allowing accurate modeling of combined concrete-fiber behavior and calculation of ultimate member capacity.
Compliance is more than theoretical: it ensures appropriate FRP performance under service and earthquake loads, preventing sudden failures, layer separation and loss of structural capacity.
