A Method for Optimizing Lightweight-Gypsum Design Based on Sequential Measurements of Physical Parameters

作者：Vimmrova Alena; Koci Vaclav; Krejsova Jitka; Cerny Robert

来源：Measurement Science Review, 2016, 16(3): 160-166.

DOI：10.1515/msr-2016-0019

• Lightweight gypsum
• waste stone dust
• physical properties
• optimization
• sequential measurement

A method for lightweight-gypsum material design using waste stone dust as the foaming agent is described. The main objective is to reach several physical properties which are inversely related in a certain way. Therefore, a linear optimization method is applied to handle this task systematically. The optimization process is based on sequential measurement of physical properties. The results are subsequently point-awarded according to a complex point criterion and new composition is proposed. After 17 trials the final mixture is obtained, having the bulk density equal to (586 +/- 19) kg/m(3) and compressive strength (1.10 +/- 0.07) MPa. According to a detailed comparative analysis with reference gypsum, the newly developed material can be used as excellent thermally insulating interior plaster with the thermal conductivity of (0.082 +/- 0.005) W/(m.K). In addition, its practical application can bring substantial economic and environmental benefits as the material contains 25 % of waste stone dust.

• 出版日期2016-6