Afzir L-shaped UD carbon laminates or plates (LUCL ™) are high-strength prefabricated carbon / epoxy laminates. These laminates are used as outer bond reinforcements to add shear strength and stiffness to concrete, stone, and wood components. The laminate is glued to the structural members using a two-part, 100% strong, high strength structural adhesive system. The resulting repairs are lightweight, non-corrosive and much easier to install than steel.
- Corrosion resistant
- Very high resistance and durability
- Reinforcement of cutting and breaking
- Appropriate ability
- light weight
- Low overall thickness, can cover more.
- Easy transportation
- Easy installation – no need for installation and carrying equipment
- Outstanding resistance
- Minimal preparation is required for shear fasteners
- Less damage to the beauty of the structure
L-shaped carbon laminate profiles are used to improve or increase structural performance and resistance and are used in the following cases:
- Increasing the bearing capacity of beams
- Reducing width of concrete cracks
- Stress reduction in steel reinforcement
- Improved fatigue resistance
- Structural system change
- Removal of walls or columns
- Removal of floor and wall sections to create access and openings
- Changing design philosophy
- Correct design or construction errors
- Long leg length: 500-1500 mm
- Short leg length: 200-800 mm
|specification||L-shaped carbon laminate|
|Long leg length||500-1500mm|
|Short leg length||200-800mm|
|Fiber volume fraction||70%|
|Matrix type||Resin epoxy, vinyl ester|
The surface on which LUCL shaped laminates are installed must be healthy and clean. It should also be dry and frost-free. Before starting the installation, all dust, weak layers, oil and destructive substances must be removed from the concrete surface.
Large holes should be patched using an approved repair mortar.
Adhesion strength of concrete may be confirmed by engineer’s opinion after surface preparation using pull-pff test. The minimum tensile strength should be 1.3 MPa. The minimum compressive strength of concrete should be more than 17 MPa.
Sheets should be cut to the proper length using a double-sided saw with a shredder or serrated blade.
Epoxy EPT™ 10020 is recommended for the adhesion of laminates. Epoxy adhesives should be mixed according to factory specifications to obtain a homogeneous mixture.
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Frequently Asked Questions
What is L-shaped carbon laminate?
L-shaped carbon laminate is almost the same as FRP sheets or laminates made of a combination of unidirectional or bidirectional carbon fibers with glue or resin and with or without a layer of tissue fibers on each side. With the difference that these L-shaped carbon laminations are made up of a 90-degree bend in their longitudinal direction. This type of lamination is mostly used in the corner areas of the sections to be strengthened.
What is the characteristic of L-shaped carbon laminate?
The most important feature and the most important difference between L-shaped carbon laminate and other FRP laminates is the difference in its appearance. This feature has caused these laminates to be able to install in L-shaped areas or corners of structural sections and create a strong conflict between the surface and the laminate. This feature increases the improvement of the mechanical characteristics of sections in such areas. In addition to the mentioned features, L-shaped carbon laminates benefit from other advantages such as high wear resistance, high corrosion resistance, light weight, high durability and stability, high bending strength, high shear resistance, etc.
How can L-shaped carbon laminate be used?
Before installing L-shaped carbon laminations, the desired surface must first be dried using a wire brush, sandblasting, milling and other methods to clean and dry it from any pollution and moisture. Then, the L-shaped carbon laminations should be cut using a saw based on the dimensions of the cross-section or the area to be strengthened. Finally, the surface and laminate are impregnated with resin and the laminate is installed on the surface. Let the resin reach its final setting.
What kind of applications does L-shaped carbon laminate include?
L-shaped carbon laminates are widely used in building retrofitting as retrofitting materials. L-shaped carbon laminate, in order to increase the bearing capacity of beams, reduce concrete cracking, reduce spring, increase shear strength, reduce stress in reinforcing steel reinforcements, increase resistance to fatigue, correct errors in design and implementation, etc. It is applicable.
L-shaped carbon laminate can be installed with what resin?
The best adhesive or resin for the installation and implementation of FRP carbon laminate is special laminate epoxy resin (ERA™420). Because the resin used in the installation of this type of laminations must have the appropriate viscosity to be applied on vertical and sub-series surfaces. In addition, the resin used must be able to establish a strong connection between the surface and the desired laminate. FRP (ERA™420) epoxy laminate adhesive product can be a good choice in such situations.
How is L-shaped carbon laminate made?
In general, L-shaped carbon laminate is made by placing several layers of one-way or two-way carbon fiber fabric on top of each other using adhesive matrices such as epoxy resin, vinyl ester resin in a 90-degree mold with certain dimensions. These L-shaped carbon laminates can be produced using manual layering, machine layering, pultrusion and other methods of making composite products.
Why is the L-shaped carbon laminate made in the form of an English L?
These laminates are usually used for angled surfaces (90-degree angle) and sub-series surfaces of beams and slabs. For this reason, they are made in an L shape to include the members on both sides.
What are the physical characteristics of L-shaped carbon laminate?
The physical appearance of this type of carbon lamination is an L-shaped sheet with a 90-degree angle, which is available in different sizes and thicknesses.
What color is L-shaped carbon laminate?
As you know, carbon fiber is black. For this purpose, the L-shaped carbon laminate is black in color due to the use of carbon fibers as the basic material for making the laminate.
How much is the price of L-shaped carbon laminate?
The price of L-shaped carbon laminate is determined based on the dimensions, the number of layers of carbon fabric fibers and the adhesive matrix used in its construction. L-shaped carbon laminate is sold based on n units of laminates with the same specifications (number = n). Due to the fluctuations in the market, it is not possible to provide a fixed price. For this purpose, you can contact our experts in Afzir to inquire about the exact price of L-shaped carbon laminate.