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The term ‘autographic’ is taken to mean records produced by the plant equipment or system as opposed to records hand produced by plant personnel. This automatic information comes from computerised systems with input from load cells on materials weigh scales, flow meters on water and admixture dispensers, moisture contents from meters fitted to the aggregate bins and concrete mixer etc.
While batch records come in many formats, the information provided should comprise the following:
However, many autographic records do not provide enough information for back-analysis if so desired.
Note: w/c (water/cement) ratio can also be written as w/b (water/binder) ratio, the binder being the sum of the various cementitious components.
|Autographic batch records|
Acknowledgement: The Concrete Society
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