Consistency; Calibration Based Water Addition; Mixing - Hydronix Hydro-Control VI Operator's Manual

Hide thumbs Also See for Hydro-Control VI:
Table of Contents

Advertisement

Optimisation

3 Consistency

A sensor measures moisture, not consistency.
Many factors affect consistency, but may not affect moisture content. These might include:
Aggregate grading (coarse/fine ratio)
Aggregate/cement ratio
Admixture dosage dispersion
Ambient temperature
Water/cement ratio
Ingredient temperature
Colours

4 Calibration Based Water Addition

When calibrating, omit the admixtures, metal fibres and plastic fibres.
When performing a calibration it is advised that both the dry and wet mix times are
extended to ensure that both are homogeneous.
A different calibration may be required for large variations in batch volume (e.g. half
batches).
Calibrate when conditions and ingredients are typical e.g. not first thing in the morning
when the aggregates are very wet, or when the cement is hot.
When using a calibration-based water addition method, it is essential to obtain a correct
dry reading.
Dry mix time must be long enough to obtain stability of the signal.

5 Mixing

Minimum mix times are a function of the mix design (ingredients) not just the mixer.
Different mixes may require different mix times.
Keep batch sizes as consistent as possible e.g. 2.5m
3 x 2.0m
.
3
In CALC Mode, keep the dry mix time as long as possible to allow the required water to be
calculated correctly, to the detriment of the wet mix time if necessary.
74
Hydro-Control VI Operators Guide HD0456 Rev 1.7.1
+ 2.5m
+ 1.0m
is not as good as
3
3
3
Chapter 13

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Hydro-Control VI and is the answer not in the manual?

Table of Contents