For application in cement or concrete, glass fibers are required to be Alkali Resistant (AR). Cem-FIL® fibers are manufactured from a specially formulated glass composition with an optimum level of Zirconia (ZrO2) to meet this requirement. Cem-FIL® glass exhibits a high degree of chemical resistance and was specifically developed to resist the very high alkalinity produced by the hydration of Ordinary Portland Cement. Cem-FIL® AR glass fibers have high tensile strength and modulus, do not rust and are easily incorporated into concrete mixes.
Our glass reinforcements are made in various forms in order to make them suitable for a variety of processes and to provide desired thermo-mechanical and electrical properties. Rovings are produced either directly from the bushing by drawing a large number of filaments (direct roving), or by assembling several strands in parallel, with no twisting (assembled roving). Chopped strands are basic strands generally cut to lengths from 3 to 12 mm; these products have numerous applications. Continuous filament mats are felts of continuous filaments distributed in uniform layers as they leave the bushing and held together by a binder. Chopped strand mats are felts or mats consisting of glass strands chopped to lengths of mostly 50 mm and held together by a binder which is soluble in styrene.
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