This paper aims to understand the relationship between the chemical, mechanical and geometrical properties by investigating basalt fibre from three commercial manufacturers and comparing to an industry standard glass fibre.
The chemical composition of fibre was investigated through XRF, highlighting that basalt and glass fibres are comprised by a similar elemental composition with the main differences being variations in content of primary elements.
A significant correlation between the ceramic content of basalt and its tensile properties is demonstrated, with a primary dependence on Al203 content.
Single fibre tensile tests at various lengths and two-way ANOVA revealed that the tensile strength and modulus were highly dependent on fibre length with a minor dependence on manufacturer.
Results demonstrate that basalt has a higher tensile strength and a comparable modulus to E-glass.
Considerable improvements in quality of basalt fibre manufacture are demonstrated over a three year period through geometrical analysis, showing reduction in standard deviation of fibre diameter from 1.33 to 0.61, comparable to tested glass fibre at 0.67.
Testing of single basalt fibres with diameters of 13µm and 17µm indicates that tensile strength and modulus are independent of diameter, following an improvement in fibre diameter consistency in line with glass fibres.
John Summerscales (1), Patrick Lemoine (2), Calvin Ralph (2), Edward Archer (2) and others
1) University of Plymouth
2) Ulster University