Features
- Ideal for high-current cathodic
protection
- Low resistivity
- High bulk density
- Particles shaped and surface
modified for maximum electrical conductivity.
- Particle sized to facilitate
pumping and pouring applications with rapid settling.
- Minimum calcination temperature
of base materials of 1250°C.
- Base materials calcined under ISO
9002:2000quality control.
- No de-dusting oils used during
manufacture of base particles,
Description
Loresco RS-3 is the newest and
most innovative super conducting earth contact backfill in the
Loresco product line. It is a surface-modified, blended, and sized
carbon backfill with surfactants. It is a premium earth contact
backfill able to handle the most stringent cathodic protection
demands requiring high current and long life.
Loresco RS-3 combines the
characteristics of superior low resistivity and high bulk density
with a remarkably rapid sinking ability to provide the latest in
conductive carbon backfill technology. This is the first time a
conductive carbon backfill with superior pumping and pouring
abilities has been available in one bag.
Rapid sinking ability allows
RS3 to achieve maximum compaction quickly for faster construction
completion times and faster energizing of the anode system. Rapid
sinking allows pouring when pumping is not an option.
Formulation
Loresco RS-3 is produced for cathodic
protection applications using an exclusive multistep process which
creates a new surface with superior conductive properties. This
process is exclusive to conductive carbon formulations designed for
cathodic protection. It ensures that the impressed current anode and
RS-3 system have increased electronic flow performance while
increasing the life of the anode system.
Manufacturing begins with the
selection of a very high quality base carbon with the desired
characteristics. Next, this carbon is calcined to a minimum
temperature of 1250°C under exacting and controlled standards. This
step results in semi-graphitized carbon particles with excellent
conductivity. The particles are shaped and surface-modified for
maximum electrical conductivity and high-current applications. To
further improve bulk conductivity, the surfaces of the individual
particles are then modified to enhance the contact conductance in a
process that is exclusive to the corrosion industry. This
breakthrough in surface alteration ensures maximum electronic
current transfer with positive anode contact. Finally, a specially
formulated surfactant is added to reduce particle surface tension
for compact settling under water.
Loresco RS-3 has a bulk density of 68
lbs per cubic foot. The fixed carbon content is greater than 99% by
weight. The bulk density and high fixed carbon content coupled with
the assured low resistivity medium allow for longer groundbed life
at a lower operating cost.
Installation
Loresco RS-3 has superb pumping
qualities due to the addition of surfactants. When agitated in
water, it takes on the characteristics of super heavy mud. It is
simple to install by either mixing and pumping or by pouring dry.
With deep anode systems, pumping from the bottom up is recommended.
Time before energizing is greatly
reduced after installing RS-3. The modified surface of the carbon
particles, coupled with the action of the surfactants in RS-3, will
achieve positive electrical contact by settling. Vibrating or
compacting are not necessary.
Specifications
- Maximum particle size: 2.5 mm
- Fixed carbon: 99.4%
- Ash: 0.5%
- Moisture: 0.1%
- Bulk density: 68 lbs per cubic foot
- Hydrogen & hydrocarbon density: nil
due to calcination temperature in excess of 1200°C
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