Basalt fibers

Interfacial shear strength and durability improvement by monomeric and polymeric silanes in basalt fiber/epoxy single-filament composite specimens J. M. Park and R. V. Subramanian 473... 

Keywords Polymeric silanes basalt fiber epoxy composite acoustic emission. 

The composite system chosen was basalt fiber-reinforced epoxy resin. The study of basalt fibers as reinforcement for polymers has been a topic of continuing interest from our early investigations [ 10-12]. 

Silane coupling agent effects in basalt fiber-epoxy systems... 

Effects of solvents for polymeric silane PS076.5" application on dry/wet IFSS in basalt fiber-epoxy SFC specimens... 

Figure 5. Oplical micrographs of fiber fraclure in SFC specimens under the wot condition (a) untreated basalt fiber (b) APS silanc-ircated basalt fiber showing matrix crack.

Figure 8. Comparison of IFSS for the treated and untreated basalt fibers after 1 h boiling in water (I) untreated, and (2) APS, (3) PS076.5, (4) PS076 treated fiber.

Mean fiber strength and IFSS in SFC specimens of untreated and silane-treated basalt fiber-epoxy resin"... 

Although naturally occurring ceramic or mineral fibers are not as common as natural polymeric fibers, there are two important examples, asbestos and basalt fibers. Asbestos fiber has some health hazards associated with it which have curbed its use. We provide a summary of these two natural ceramic fibers before describing synthetic ceramic fibers in more detail. 

Hurbankova M. 1994. One-year follow-up of the phagocytic activity of leukocytes after exposure of rats to asbestos and basalt fibers. Environ Health Perspect Suppl 102 201-203. 

Kim MT, Kim MH, Rhee KY, Park S J. Study on an oxygen plasma treatment of a basalt fiber and its effect on the interlaminar fracture property of basalt/epoxy woven composites. Compos Part B Eng 2011 42 499—504. http //dx.doi.0rg/lO.lOl6/j.compositesb. 2010.12.001. 

D.P. Dias and C. Thaumaturgo Fracture Toughness of Geopolymeric Concretes Reinforced with Basalt Fibers, Cement and Concrete Composites Vol.27 (2005), p.49-54. 

Dias, D.P., Thaumaturgo, C. (2005). Fracture toughness of geopolymeric concrete reinforced with basalt fibers. Cement and Concrete Composites, Vol. 27, pp. 49-54, ISSN 0958-9465. 

Basalt fibers Fibers from igneous (volcanic) rock that is low in silica content, dark in color, and comparatively rich in iron and magnesium. 

Mertiny P, Juss J, El Ghareeb MM (2009) Evaluation of glass and basalt fiber reinforcements for polymer composite pressure piping. J Pres Ves 131(6) 061407-1... 

Over recent years, research on new types of fibers for buildings and civil engineering has turned towards the study of basalt fibers (Fig. 1.4). 

Resulting from the melting of a single raw material, basalt fibers have higher performance than other fibers in terms of heat protection, thermal and acoustic insulation, durability, and vibration resistance. 

Basalt fibers are qnite cheap, despite their features, which are significantly better than other similar materials employed today, such as glass fiber. As for heat conduction, items made ont of basalt fibers are three times more effective than those in asbestos and are better performing than glass and mineral fibers. The application temperatures of basalt fiber products are relevantly higher (from -260 to 900 °C). 

Thanks to their elasticity at both the nucro- and macrostructure levels, basalt fibers are resistant to vibrations compared to similar products. This is a particularly relevant featnre in the field of mechanical structures and civil buildings and engineering. 

As for chemical properties, basalt fibers are resistant in aggressive environments (i.e., acid or basic). Due to this, basalt fiber pipes can be suitably used in chemical plants to transport heated acids or in sewage systems to transport liquids and aggressive gases, melted materials, etc. 

The electrical properties of plastic-basalt composites, particularly the volumetric strength of basalt fibers, is one or two times higher than that of glass fibers. 

Processing techniques used for basalt fibers are similar to the traditional techniques used for glass fibers (fabric, filament, staples, glass fiber-reinforced polymer [GFRP]). Thanks to their excellent properties, basalt fibers are employable in heat-resistant as weU as alkaline-resistant products (containers, pipes, GFRP, materials for thermal insulation). 

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