PROCESS FOR PREPARING CEMENT-ASBESTOS BASED MANUFACTURED ARTICLES BY USING FIBRILS OF SYNTHETIC POLYMERS, ENDOWED WITH A HIGH SUPERFICIAL AREA, AND PRODUCTS DERIVED THEREFROM

摘要

Process for the preparation of cement-asbestos manufactured articles, by means of preparatory operations comprising the preparation of an aqueous suspension of cement and asbestos fibres, filetering and optional dewatering of the obtained paste, and formation of the manufactured article, characterized in that said suspension does not contain asbestos of the amosite type and that it is additioned with up to 0.5% by weight of the cement, of polyolefinic fibrils with a surface area of at least 1 m2/gram.