6.5.4.8 Effect of Concrete on Adjustments
Note! A basic requirement for good operation is an even, homogenous
concrete mix.
If the concrete mix is:
- too wet - the product surface waves or looks like a net
- too dry - the product surface cracks
Note! If the concrete is not of good quality and screw adjustments do not
help, do not adjust the machine. Stop the machine, remove the non-acceptable
concrete from the process, clean the machine and start it again
with a new concrete mix.
Screws
- The only allowed reaction to the variation in concrete quality is the
adjustment of the speed of the screws.
- The concrete quality affects essentially the screw speed adjustments
- concrete must be equal in quality from one mix to another.