Ceramics-Silikáty 53 (3) 216-224 (2009)

PREDICTION OF THE RISKS OF DESIGN AND DEVELOPMENT OF NEW BUILDING MATERIALS BY FUZZY INFERENCE SYSTEMS

T. Vymazal, N. Žižková, P. Misák

We dealt with a process of design and development of new building materials based on the secondary raw materials. The secondary raw materials can, due to their variable properties, unpredictably influence physico mechanical characteristic of the resulting material. In order to eliminate these risks, many preventive methods are applied. The best-known method is FMEA (Failure Mode and Effects Analysis). The work was performed in two parts. The first part deals with mathematical models of tensile cohesion in dependence on percentage substitution of fly ash for milled limestone using fuzzy logic theory. In the second part the possibilities of an extension of FMEA methodology by using fuzzy inference systems (FIS) is shown. Practical applications show that using FIS for modelling of physico-mechanical properties of materials with secondary raw substances and for quantification of risks is acceptable.

Keywords: Fuzzy inference systems, Polymer-cemented adhesive agent, Secondary raw material