General Comments about different types of Strand:
Strands designated by H in the product code.
These are high integrity strands that are designed to resist breaking down during mixing and processing so that it stays basically as a bundle of filaments. These products are particularly suitable for Premix and other mortar and concrete reinforcement applications.
Strands designated by S in the product code.
These are water dispersible Strands that are designed to break down into individual filaments when it is added to water or aqueous mixes.
These products are usually confined to low fiber content mixes (< 2% by weight), or high water content mixes where the excess water is removed, such as in vacuum de-watering processes commonly used to manufacture asbestos cement and calcium silicate products.
Number of Filaments per Strand.
Basically determines the number of strands per unit volume for a given weight percent. Generally the more strands per unit volume the higher the flexural strength but mix workability is usually reduced.
High integrity strand, designed for premix applications such as premix casting and premix spraying. Available in 13, 25 and 38 mm lengths (1/2, 1 and 1 1/2 inch).
Strand length is given by the first one or two digits in the product code.
High integrity strand, designed for lower glassfiber content applications,
such as stucco and surface bonding. It has half the number
of filaments per strand that H530X, so it provides twice the number of
strands for same weight content as H530X. This can create workability difficulties
at higher fiber contents. However, this feature can maximize strengths
in low fiber content composites. The finer strand is less visible at the
surface, which is of benefit in stucco applications.
The letter P in the product code states that the filament diameter is 18 microns as opposed to all other products which have 13 micron filament diameters. This makes it our heaviest available strand. It has the highest integrity and is most resistant to filamentization during mixing and processing. It is particularly suitable for spray-premix.
Designed for fast dispersion into individual filaments on mixing in aqueous slurries. Particularly suitable for asbestos replacement applications and can be incorporated into face mix slurries to help reduce surface crazing. Strand is wet cut and has
13H103 Chopped Strand
This chopped strand is design for use in Fiber Reinforced Concrete (FRC) for plastic shrinkage crack control. It is not intended for general use in GFRC
Typically the dosage rate will be 1 1/2 lbs/cu. yd. of concrete. Mixing of the fibers needs to be done at the job site as excessive mixing time can cause damage to the fibers.