Fiber dispenser for shotcrete

The Tecwill “flying” weighing system enables fibers to be dosed at the same time as aggregates. Fibers are dosed into the moving aggregate flow, where they are pre-mixed with aggregate already during the dosing. This provides considerable benefits over all other systems:

• Shorter mixing time because fibers are already pre-mixed with the aggregate
• Less mixer wear due to the shorter mixing time
• Better concrete quality because of the homogenous shotcrete fiber content
• No fiber clumps in the concrete
• Fewer problems with the shotcrete spraying machine
• Better tunnel lining

Polypropylene (PPI) fibers are widely used in shotcrete and on concrete floors. They are very light and require a special dosing system. Our solutions for PP fibers include:

• Manual dosing system for fiber bags – normally in a 1, 2 or 5 kg packet
• Fully automatic bag dispenser system for bagged fibers
• Fully automatic dispenser system for loose fibers

Color pigment can be added to concrete either in a liquid or powder form. Our liquid dosing system consists of storage tanks, pumps, scale and pipelines. Depending on customer requirements, we can deliver from 1 to 6 color tanks for each plant.

Powder pigment is dosed as a powder or granules, depending on the application. Both applications require their own special dosing system.

Powder/granule is dosed from the super bag storage bin to the scale using a screw conveyor. The ready batch is transferred by a pneumatic conveying system from the scale to the mixer. Dosing is connected to the control system for automatic dosing.