초록 ▼

The mixture for manufacture of shaped elements of fiber-cement, in addition to minimum 5% by weight of pozzuolanic silicic acid contains also an amount of limestone powder. With this mixture it is possible to obtain a product of high strength properties without tendency to embrittlement respectively

The mixture for manufacture of shaped elements of fiber-cement, in addition to minimum 5% by weight of pozzuolanic silicic acid contains also an amount of limestone powder. With this mixture it is possible to obtain a product of high strength properties without tendency to embrittlement respectively to formation of cracks on the surface. In utilizing the mixture for manufacture of shaped elements the latter are moulded from a mixture of aqueous material and permitted to set at 70°to 90°C. during 5 to 12 hours preferably with simultaneous compression.

대표청구항 ▼

A mixture for use in the manufacture of hydraulically-setting, fiber-containing shaped elements, said mixture containing, based on the total weight of the mixture when dry, 5 to 20% by weight fibers, 20 to 85% by weight hydraulic binder, 5 to 40% by weight pozzuolanic silicic acid, and 5 to 35% by w

A mixture for use in the manufacture of hydraulically-setting, fiber-containing shaped elements, said mixture containing, based on the total weight of the mixture when dry, 5 to 20% by weight fibers, 20 to 85% by weight hydraulic binder, 5 to 40% by weight pozzuolanic silicic acid, and 5 to 35% by weight limestone.