Prediction of cement strength: analysis and implementation in process quality control

Abstract The main purpose of the present article is to develop mathematical models predicting cement strength at 28 days based on early strength as well as on physical and chemical characteristics of cement types investigated. In parallel, a relatively extended analysis of a series of existing models is performed. Static and movable time horizon models have been built and implemented to real industrial conditions for the long-term. These tools are applied in conjunction with a proportional-integral controller regulating 28 days strength around a target. Performance of the models is investigated using typical statistical analysis. The implementation of these techniques in daily quality control has been demonstrated as an important factor of quality improvement by maintaining a low variance of 28 days strength.