Effect of geopolymer composition on the mechanical and rheological properties

International Conference Building Materials, Products and Technologies

材料科学;工业技术（总论）

Halasta, L.^1 ; Rovnanik, P.^1 ; Mikhailova, O.^1

Faculty of Civil Engineering, Brno University of Technology, Vevei 95, Brno

60200, Czech Republic^1

关键词: Building industry;    Coating system;    Global aspects;    Low yield stress;    Production cost;    Rheological measurements;    Rheological property;    Water glass;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/583/1/012002/pdf
DOI  :  10.1088/1757-899X/583/1/012002

来源: IOP

【 摘 要 】

Coating systems, not only in the building industry, have historically their irreplaceable role. Modern times, however, take on increasing responsibility for both the environment, the versatility of product use, and the reduction of production costs. The development of the new multifunctional geopolymer coating, therefore, clearly covers all of these global aspects. In this paper, the mechanical and rheological properties of various geopolymer pastes were investigated. The geopolymer mixtures were composed of metakaolin and various dosage of water glass solution with three different SiO2/Na2O ratios. The best mechanical properties were achieved for the mixture with content 90% of water glass and SiO2/Na2O ratio of 1.4. The rheological measurements showed high thixotropy of all mixtures and very low yield stress values.