| 摘要 |
1516053 Glass fibre reinforced cement products W R BONSAL CO 31 Dec 1976 [16 July 1976] 54533/76 Heading C1H A cement mix suitable for high tensile strength applications, the mix being characterized by a resistance to alkali-glass reaction resulting in loss of tensile strength, comprises an inorganic cementitious binder containing at least one reactive alkali compound, glass reinforcement, and a finely divided alkali-reactive scavenger material, said scavenger containing silica as the major constituent thereof and having a reactivity with the alkali content of said binder which is substantially greater than the reactivity of said glass reinforcement therewith whereby the alkali content of said binder reacts with the scavenger material in preference to the glass reinforcement, and the amount of said scavenger material, based upon the silica content thereof, being at least in stoichiometric proportion to the alkali content of said binder. Exemplified scavenger materials are 30-325 mesh (U.S. sieve series) silica flour and powdered soda-lime glass. |
