Title: Mixture-process designs and response surface models for predicting properties of calcium silicate units
Authors: Sonja Kuhnt - Dortmund University of Applied Sciences and Arts (Germany) [presenting]
Abstract: Calcium silicate units ensure good acoustic and thermal insulation as well as fire resistance when used for building houses. In the production process a mixture of sand, lime and water is high-pressed first and then autoclaved. We present an experiment with mixture components and controllable process variables. The main interest lies in studying the compressive strength of the produced calcium silicate units. Different D- and I-optimal designs are considered and compared by their efficiencies and prediction variance. We discuss specific response surface models for mixture-process experiments. Results from running the chosen design are analysed and their use in predicting compressive strength is shown.