Utilization of basalt fabrics as reinforcement for alkali-activated blast furnace slag systems

International Conference Building Materials, Products and Technologies

材料科学;工业技术（总论）

Hruby, P.^1 ; Kalina, L.^1 ; Masilko, J.^1 ; Kimm, M.^2 ; Gries, T.^2

Brno University of Technology, Faculty of Chemistry, Purkyova 118, Brno, Czech Republic^1

Institut für Textiltechnik, RWTH Aachen University, Otto-Blumenthal-Straße 1, Aachen

52074, Germany^2

关键词: Alkali activated;    Alkali activation;    Alkaline conditions;    Compressive and flexural strengths;    Economic aspects;    Fabric reinforcement;    Reinforcing materials;    Transition zones;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/583/1/012012/pdf
DOI  :  10.1088/1757-899X/583/1/012012

来源: IOP

【 摘 要 】

Alkali-activated materials based on the alkali-activated blast furnace slag (AABFS) seem to be a suitable alternative construction material due to the environmental and economic aspects. More widespread application potential could be supported by the utilization of fabric reinforcement into the matrix to form AABFS composite with improved mechanical properties. The basalt fibres or fabrics (BFs) represent a reinforcing material suitable for the AABFS due to its favourable price/properties ratio. However, the question of fibres stability under the alkaline conditions should be taken into account. The effect of BFs implementation in one or more layers into various types of matrices to the mechanical properties was studied with the regard to the compressive and flexural strengths. The used matrices were based on the alkali-activation of the BFS with various activators. The fabric/matrix adhesion same as the transition zone properties were studied using the SEM analysis and pull-out tests. Indication of appreciable improvement of mechanical properties utilizing one layer of BFs for some of the mixtures activated using sodium water glass and sodium carbonate was found out.