Super sulphate cement reinforced with glass fibers
AssigneeNational Research Development Corporation
InventorJack F. Ryder
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Abstract
Glass fiber cementitious composites of improved durability comprise fibers of an alkali-resistant glass containing zirconia or stannia in combination with a supersulphate cement. The invention also includes processes for the production of such composites with particular reference to the production of molded or cast products by a modification in which self-supporting green products are produced at an early stage.
Claims16
A process for preparing a glass fibre cementitious composite comprising alkali-resistant glass fibres and supersulphate cement which comprises admixing from 0.5 to 10% by weight, based on the glass fibre/wet cement mix, of said alkali-resistant glass fibres in a supersulphate cement matrix, said alkali-resistant glass fibres comprising from 5 to 20% by weight of a material selected from the class consisting of zirconia and stannia and from 60 to 80% by weight of silica.
A glass fibre cementitious product comprising supersulphate cement and alkali-resistant glass fibres containing from 0.5 to 10% by weight of fibres based on the glass fibre/wet cement mix, in which said alkali-resistant glass fibres comprise from 5 to 20% by weight of a material selected from the class consisting of zirconia and stannia and from 60 to 80% by weight of silica.
Dependencies are inferred from the claim text.