*Description:micro brass coated steel fiber is processed by the carbon steel wire according to the theory of cold-work hardening, being electroplated, cut to lengths, this process increases the steel fiber’s strength and hardness. For the reinforcement project of mortar or concrete, micro brass coated steel fiber plays important role, especially in UHPC,RPC, etc.

*Geometric parameter:

Length(l):12-14mm(Any length can be manufactured accordingly)  Diameter(d):0.2+/-0.02mm                                  Aspect ratio:l/d(40-100)                                   Fibers per KG:429477 approx.

Raw material:SWRH72A                                   Gravity:0.002396g

Electro-plating:brass

Chemical: C:0.72%, Si:0.21%, Mn:0.45%, P:0.016%, S:0.009%.

*Tensile strength: Above 2850MPa

*Application:

Micro copper coated steel fiber can be used in any reinforced concrete, especially in large fields, it is very popular.

·UHPC structure

·RPC cover plate

·Ultra-thin white topping

·Subway/railway/expressway

·Other major precast concrete projects

*Technical data:

-Steel fiber reinforced concrete has the same mixing sequence with the plain concrete in the batching plant mixing process, what is the most important, it is forbidden to add the steel fiber as the first component mixture.

-Total mixing time 6minutes max., the specific mixing time should be done according to the dry/wet mixing requirement.Moreover, the mixing lasts about 2minutes when all of the components including steel fiber is added, too short mixing time will not play the steel fiber’s reinforcing role, too long will cause balling.Adding steel fiber to the batch plant mixer in batches when mixing and small trial before mass mixing is recommended.

-Steel fiber percentage in reinforced concrete

-Steel fiber reinforced shotcrete’s rebound percentage

About 5-12%,10-18% less than the plain shotcrete, and the best shotcrete equipment is double shaft forced mixer.

-Steel fiber reinforced concrete’s slump

Pumping: 150+/-30mm   Pouring: 120+/-30mm

 

*Quality:

YB/T151-1999<<STEEL FIBERS FOR REINFORCED CONCRETE>>

JG/T3064-1999(Standard of steel fiber reinforced concrete in construction)

Test report by China National Centre for Quality Supervison and Inspection of Metal Products