EVALUATION THE EFFECT OF PRODUCTION CONDITIONS ON THE QUALITY OF CONCRETE BY USING CONTROL CHARTS
The objective of this study is to relate the quality of concrete production to the
capability of the production process in such a way that the process capability could indicate
the level of production quality in batching plants. The main idea in this research is that the
accepting and refusing lab tests are not sufficient as quality indices and that the statically
analysis including control charts and capability calculations give biter image to the
performance levels of production process in batching plants . In this study, the production
conditions for a batching plant are investigated and the supervision is taken as the effecting
factor on the quality. Large number of testing data of compressive strength are analyzed.
Results showed that it is necessary to use more detailed procedure than accepting and
refusing concrete tests.