NEW TECHNOLOGY FOR PRE-REINFORCED CONCRETE MiniBars™ solution enables mixing concrete with sufficiently large volumes of fibers to perform structurally without impairing workability in casting or finishing
SAVE TIME, MONEY & IMPROVE SAFETY

Steel fibers typically require special conveyors or extra man-hours to add to a concrete mix. Steel mats or rebar are very labor intensive to place on chairs and supports and to tie properly. MiniBars macro synthetic fiber can be placed with a laser-guided screed and can eliminate the need for a concrete pump in these situations. MiniBars benefits projects by reducing labor hours and placement time, providing significant job savings.

3-LEVEL BOND ACTION Affinity with Matrix

High compatibility between materials increasing fiber bond

Surface Roughness

Physical bond & friction

Helical Shape

Mechanical anchorage increasing pull-out resistance

Point A :
  • Loss of Elasticity
A-C range :
  • ​Micro-cracking phase
  • MiniBars™ action mostly driven by strong affinity between fiber and matrix
Point B :
  • ​Fiber starts to work with aggregate interlock
Point C :​Peak Flexural Tensile (mainly function of matrix strength)
  • Macro-cracking starts, Fiber Working
C-D range :​​Debonding and frictional slip
  • ​Displacement needed for full development of fiber action
  • MiniBars™ high bond, surface roughness and high E-modulus allows minimum displacement needed to fully develop all fiber action
D-E range :​​Displacement needed for full development of fiber action
  • ​–MiniBars™ fiber bridges the crack through surface roughness & mechanical anchorage provided by helical shape, dissipating energy by friction with matrix
  • Pull-out energy (debonding+ friction) increases with increased fiber embedment length (unless embedment length becomes too long and fiber breaks)
Mixing & pouring concrete with MiniBars in Thailand
MiniBars Shotcrete trials for Statens Vegvesen

MiniBar™ Bond and Pull Out resistance in Concrete

MiniBars™ have 4 bond/pull out resistance mechanisms to take advantage of the elastic material properties

  • Length which can varied to achieve the appropriate embedment length
  • Diameter for the concrete to lock to in shrinkage
  • Helix to interlock with aggregate and paste and resist pull out
  • Rough Surface for bond and friction
  • As the MiniBar is pulled out of the helix formed in the hardened/cured concrete the inter-fiber bond resists the pull out thus imparting residual strength

Broken specimen with higher dosage than 10 Kg/m3 – 17 lbs/yd3

High-Strength MacroFiber

  • MiniBars™ macrofiber can develop strain hardening behavior and are able to sustain a residual strength higher than peak strength
  • This superior post-cracking performance allows the design of Concrete Structures requiring high ductility at high crack opening (ultimate limit state)
Fiber Type MiniBars™
43mm | 1.7”
MPa psi
Maximum Load 5.4 789
fl 4.5 656
fR1 4.6 673
fR3 5.1 740
ARS 4.9 709

Flexural Tensile Strength

MiniBars™ @10 Kg/m3 (17 lb/yd3) in a 50 MPa concrete (7250 psi) According to EN 14651 Specimen: 10x10x50 cm (4x4x20 in) | Span= 350 mm (14 in)

Concrete Type Reference +10 Kg/m3 – 17 lbs/yd3
MiniBars™		 Reference +10 Kg/m3 – 34 lbs/yd3
MiniBars™
Slump Flow
C30/37
4400 psi		 180 mm
7.1 in.		 160 mm
6.3 in.		 - -
C70/85
10200 psi
Self-leveling		 - - 540 mm
21.3 in.		 510 mm
20.1 in.
FIRE RESISTANCE

Fiber Reinforced Concrete made with MiniBars™ solution is not flammable

  • Testing done according DIN 4102-1 Standard
  • Tested fully cured specimens
  • Complex screening experiment seeking the limit for flammability
  • Settled on 3% VF as the limit (cf. DIBt approval)
  • Reached Class A1

DIN 4102-1 Fire test to building material – Test Method

When the material’s fire behaviour has been determined in accordance with the standard, it divided into :

Building Material Classs Designation
Class A A1 Non-combustable Material
A2 Non-combustable Material
Class B B1 Not easily flammable
B2 Flammable
B3 Easily flammable

DIN 4102-1 : Class A

A1 : Materials may be classed as A1 materials if they :

  • ​Pass the test specified according the standard corresponding parts
  • Meet the requirements for class A2 materials

A2 : Materials may be classed as A2 materials if they:

  • ​Pass the test specified according the standard corresponding parts
  • Meet the test specified DIN 4102-16
VALUE PROPOSITION

This unique combo of high performance MiniBars™ and Basbars™ has plenty to offer.

ELIMINATE STEEL

Lightweight

Working with fiber is a breeze. It is only a quarter the weight of steel. This makes a world of difference for your crew.

Faster Completion

Because they are easier to work with, projects get completed at a faster rate.

Less Material

With fiber, less concrete is needed; producing lighter panels and thinner panels.

Lower Costs

When less material is used, logistics and construction costs are reduced.

Specific gravity CLOSE TO CONCRETE

Because MiniBars™ have a density close to concrete, they disperse swiftly and evenly when mixed in concrete; creating a network of randomly placed fibers throughout the concrete. As load is applied to the concrete the MiniBars™ act as crack control and distribute the load throughout the beam.

2.4

Concrete

2.0

MiniBar™

7.8

Steel

0.9

Polypropylene
Tensile Strength

MiniBars™ possesses a tensile strength twice grater than steel

It Is Versatile

Our reinforcement composites are a blend of mineral fibers, they can be manufacture to meet an array of requirements. Designers are free to create exciting new products and, in many cases, are only limited by their imagination. MiniBars™ reduce or replace secondary and or primary steel reinforcement in many structural applications requiring flexural tensile and post-crack performance.

Non-conductive

Perfect for building electronic test facilities and such

Zero corrosion

Solves corrosion problems in marine structure such as bridges and pontoon

Non-magnetic

Great for applications in road and railways for trams or electric buses

LESS COST

33% Less Costs

Less concrete is needed and zero need for steel

LESS MATERIAL

40% Less Labour

Lower weight lesser burden lesser labour

LESS EVERYTHING

37% Less Time

Faster project completion

Totals savings of 30% Steel Net MiniBars™
Reinforcement​ 100% 10% Higher
Form Work 100% 100%
Bar or Net Fixing 100% 100% saved
Stool or Chair Fixing 100% 100% saved
Concrete 100% 20% saved
Comparative Costs 100% 67%

Surprising Lightness

MiniBars™ provide strength and versatility, with surprising lightness and durability.

Low weight (density 1/4 of steel) enableseasy handlight manufacturing plant or construction site

Reduced concrete cover layer eneblesless concrete weight and lighter structures

Solutions for pre and post-tensioning

Simplicity

Mineral fiber concrete reinforcement eliminates the need for steel and wire mesh. Working with steel is a hassle. Working with fiber is a breeze. It is only a quarter the weight of steel.

Light Weight

Because mineral fiber is only a quarter the weight of steel, this makes a world of difference for your crew

Faster Completion

Because they are lighter, thus they are easier to work with, making it possible for your construction to get completed at a faster rate.

Less Material

With fiber, less concrete is needed producing lighter panels and thinner panels.

Lower Costs

When less material is used, logistics and construction costs are reduced.

Lean

Thinner panels also makes slenderer buildings. Better looking aesthetics and larger inner space.

Eco Green Environment

When less material is used, carbon footprint on the environment is reduced too.

Design Freedom

They also increase your design freedom, making thinner panels for a slenderer building. Better looking aesthetics and larger inner space.