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: concrete, brittle concrete becomes ductile with dramatic increase of toughness and durability. So, the concrete will be most powerful to have long life time, good economical efficiency and enhanced safety.

Increased fatigue resistance, flexural toughness, shear force, flexibility, impact resistance, and fracture resistance of concrete
Increased resistance to drying shrinkage
High value of abrasion durability, erosion resistance and corrosion resistance
Minimized expense on maintenance and repair
Enhanced physical properties of concrete leading to decrease of section thickness of concrete
Reinforced cohesion of concrete with even dispersion of steel fiber
Improved cost-effectiveness, constructability, and safety due to no-installation of wire mesh
Three-dimensional reinforcement effects inside concrete
Excellent prevention of structure material from corrosion by blocking cathode ionization

Properties of Concrete	Effects of BUNDREX®
Modulus of Rupture	3 times increase
Shear Strength	2 times increase
Torsional strength	2 times increase
Fatigue Resistance	1.8 times increase
Abrasion and Corrosion	1.4 times increase
Shock absorption	15 times increase

[Cost-effectiveness]

Reduction of required workers : no additional workers are necessary to prevent fiber ball when mixing and placing concrete
Conservation of working hours : no mixing ball makes mixing fast; prevention of work delay caused by clogging of pipeline or nozzle during shot concrete pouring
Simplified B.P equipment : no steel fiber disperser is required during B.P installation

[Quality]

Superior dispersibility
Unlike grain-shaped particles, BUNDREX® makes 100% mixing of design volume possible and therefore maximizes effect of steel fiber

Brittle fracture
Ductile fracture

Wire Mesh Reinforcement	BUNDREX® Reinforcement
Difficulty for installation of wire mesh and decrease of reinforcement effects in case of back break due to excavation Decreased adhesion, layer splitting and hollowing-out due to vibration on wire mesh when placing shot concrete High frequency of cracking in shot concrete and decreased reinforcement effects in case of cracking Shot concrete reinforcement should be performed right after excavation but delayed reinforcement caused by installation of wire mesh makes risk of cave-in disasters and reduced reinforcement effect Low constructability and complex work process for installation of wire mesh ncreased construction costs due to extended working hours for wire mesh installation	Increased reinforcement effects with construction of even thickness on a rugged surface Increased tensile strength, bending strength, shear strength of concrete; no hollowing-out; reduction of wall thickness (by 20%) High resistance to cracking; increase in toughness (residual strength) after cracking Shot concrete construction right after excavation makes lowered risk of cave-in disasters and increased reinforcement effects and safety of permanent structures Simplified work process makes enhanced quality and safety Reduced working hours and construction costs

Wire Mesh Reinforcement

BUNDREX® Reinforcement

Difficulty for installation of wire mesh and decrease of reinforcement effects in case of back break due to excavation

Decreased adhesion, layer splitting and hollowing-out due to vibration on wire mesh when placing shot concrete

High frequency of cracking in shot concrete and decreased reinforcement effects in case of cracking

Shot concrete reinforcement should be performed right after excavation but delayed reinforcement caused by installation of wire mesh makes risk of cave-in disasters and reduced reinforcement effect

Low constructability and complex work process for installation of wire mesh

ncreased construction costs due to extended working hours for wire mesh installation

Increased reinforcement effects with construction of even thickness on a rugged surface

Increased tensile strength, bending strength, shear strength of concrete; no hollowing-out; reduction of wall thickness (by 20%)

High resistance to cracking; increase in toughness (residual strength) after cracking

Shot concrete construction right after excavation makes lowered risk of cave-in disasters and increased reinforcement effects and safety of permanent structures

Simplified work process makes enhanced quality and safety

Reduced working hours and construction costs

Wire Mesh reinforcement
BUNDREX® reinforcement

Characteristics	Tunnel	Dam	Road pavement	Bridge Deck	Incline	Factory flooring	Building	downstream product
Crack Resistance	○	○	○	○	○	○	○	○
Impact Resistance	▲	○	○	○	●	●	▲	○
Abrasion Resistance	▲	○	○	○	■	●	▲	▲
Freeze/Thaw resistance	○	○	○	○	○	○	○	○
Fatigue Resistance	■	■	●	○	■	○	■	●
Refractoriness	●	■	■	▲	■	●	●	●
Shear Resistance	○	■	●	○	○	●	●	●
Weight, Thickness Decrease	○	▲	●	●	●	▲	○	○
Cost-effectiveness	●	■	●	▲	●	○	●	●

○ Excellent / ● Good / ▲ Normal / ■ N/A