FORMS OF DELIVERY OF STEEL FIBER
If a fiber is skinny and long, it will work better in
concrete. At times, it is stated that thin, long fibers with high aspect ratio
are more exposed to balling in concrete and cannot be mixed at higher dosages.
It is not possible to take this as granted since there is a proof coming from
significant verifiable evidence of high l/d FIBMix fibers.
However, this statement is true to a certain extent. There
is a relationship between high l/d ratios and a significant number of single
fibers as well as a long, complete wire length. The wire needs to be placed
here and there in the concrete mix. Hence, more attention is required to the
mix design. If 40 kg/m³ easy-mix fibers (low l/d) is compared with 40kg
high-perform fibers (high l/d), it is like comparing gold to silver. Rather
than using 40 kg /m³ easy-mix fibers, 20 kg/m³ or 15kg/m³ of high- perform
fibers will do the work correctly, in accordance with the types that are being
compared. In a circumstance like this, things can be perceived in another way.
Exceptional systems have been created so that balling can be
avoided while optimal fiber distribution will be enabled. The perfect pattern
of delivery and right concrete composition with the mixing process will ensure
that even 100 kg/m³ of high-performing fibers such as the FIBMix RC-80/60-BN
are perfectly mixed with the concrete.
Example of loose
steel fibers
For
aspect ratios that are very high (l/d ≥ 60), other ways should be used so that
FIBMix can be effortlessly and efficiently added to the concrete. An
alternative is to utilize blower blast equipment in such a situation.
Using blower blast equipment to add fibers to concrete
A lot of users do not like blowing loose fibers when the aspect ratio is more than ~70, due to many practical rationalisms, including constant exposure to balling. Furthermore, additional time, as well as effort, is required when contrasted with other delivery forms. Additionally, blowing fibers is commensurate with beefing up fibers but not the same as dosing, most notably when ordinary equipment is used. Dosing needs a precise perception of the number of kilograms of fibers added to the concrete.
Glued fiber technology was developed to prevent possible balling connected to the addition of loose fiber of a high aspect ratio. As soon as glued FIBMix steel fiber is added to concrete, the clump circulates uniformly on the macro level. If mixing is continued, distinctive fiber will separate expeditiously in order homogeneously flow on the micro-level.
