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SikaFiber®-502

Low carbon hooked steel fibers for concrete reinforcement

SikaFiber®-502 steel fibers are made with cold drawn wire, providing high tensile strength and ductility at breakage. SikaFiber®-502 steel fibres are designed specifically for the reinforcement of concrete and mortar. The anchoring system with shaped ends ensures a joint behavior between concrete and fiber, requiring a plastification of the hooks in tension. This ensures a much higher anchorage than that existing by simple friction between the fiber and the matrix. Suitable for use in hot and tropical climatic conditions.

SikaFiber®-502 provides the concrete with a uniform multi-directional reinforcement with following benefits:
  • Increases resistance to cracking, ductility, energy absorption and tenacity of concrete
  • Improves impact resistance, fatigue resistance and resistance to cut of concrete
  • Bypasses joints and cracks to provide more connection strength, resulting in an increase in maximum load capacity, which allows the possible reduction of the concrete section
  • Superior mechanical properties of concrete, with greater resistance to bending and traction
  • Increased toughness of the concrete, with greater resistance to impacts and punctual efforts
  • Reduction of required contraction joints
  • It helps to reduce manpower to incorporate concrete than traditional reinforcement
  • It is an economic solution of reinforcement
  • Easy dosing and mixing at the plant or at the job site without the need for special tools
  • Ideal for use in conventional finishes and flat floors
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Usage

The main uses of SikaFiber®-502 steel fibers are:
  • Steel mesh replacement for shrinkage control
  • Concrete reinforcement for industrial floors and floors
  • Structural concrete reinforcement for static and dynamic applications
  • Slabs of industrial floors
  • Precast
  • Floors slabs without joints
 

Advantages

SikaFiber®-502 provides the concrete with a uniform multi-directional reinforcement with following benefits:
  • Increases resistance to cracking, ductility, energy absorption and tenacity of concrete
  • Improves impact resistance, fatigue resistance and resistance to cut of concrete
  • Bypasses joints and cracks to provide more connection strength, resulting in an increase in maximum load capacity, which allows the possible reduction of the concrete section
  • Superior mechanical properties of concrete, with greater resistance to bending and traction
  • Increased toughness of the concrete, with greater resistance to impacts and punctual efforts
  • Reduction of required contraction joints
  • It helps to reduce manpower to incorporate concrete than traditional reinforcement
  • It is an economic solution of reinforcement
  • Easy dosing and mixing at the plant or at the job site without the need for special tools
  • Ideal for use in conventional finishes and flat floors

Packaging

25 kg box

Colour

Grey steel fiber

Product Details

Product Information

Fibre type

Low carbon hooked steel fibers

Shelf life

24 months from date of production if stored properly

Storage conditions

SikaFiber®-502 should be stored in its original tightly closed packaging, indoors and in dry area.

 

Density

7810 kg/m³

Dimensions

Length50 mm
Equivalent diameter

1 mm

Aspect ratio50

Fibre volume content

3000 kg (measured unidirectional)
Technical Information

Tensile strength

1200 Mpa

Application

Application Information

Dispensing

SikaFiber®-502 fibers can be added to concrete both in plant or on-site. The introduction of the fibers directly onto the concrete mixer truck can be carried out manually or with the help of auxiliary mechanical means (conveyor belt, elevator, injection element, etc.).

Fiber should be added gradually to the concrete mix. Additional mixing time for fiber integration is approximately 1 minute per cubic meter. In general, the extra kneading time will be 5 to 6 minutes. For plant addition, SikaFiber®-502 can be distributed on the aggregate conveyor belt, or directly inside the mixer.
Consumption

Recommended dosage

20 – 40 kg/m³, subjected to the project design requirements.

Site trials must be carried out to confirm the performance of the fibre and the concrete as per the poject requirements.
Application steps

APPLICATION INSTRUCTIONS

  • SikaFiber®-502 steel fibres can be added during or after the concrete dosing.
  • A test batch should be carried out to determine the homogeneous mixture.
  • For on-site addition, it is recommended that the truck is not loaded more than 85 % of its capacity.
  • Devices such as conveyor belts and feeders can be used to add fibers to the mixer hopper and / or mixer truck.
  • After adding the fibres, the concrete should be mixed for a sufficient time (75 rotations at a complete mixing speed) to ensure even distribution of the fibers throughout the concrete.
  • It is recommended to carry out a visual inspection in order to verify that the mixture is homogeneous. Continue kneading at maximum rotation speed until a perfect distribution is achieved.
  • The use of medium or high range water reducers can give an additional advantage.
  • Concrete containing SikaFiber®-502 steel fibres can be pumped, skipped or placed directly, using conventional equipment. Ensure suitability of pumping equipment with initial trials, before project application.
  • Conventional finishing techniques and equipment can be used with SikaFiber®-502 steel fibres. In some cases an additional float process is advisable, decreasing the angle of the float, which will help to minimise the exposure of the fibres on the surface.
 

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