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Curzio Gramiccia
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Curing Cements, Concrete, And Artificial Stone
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Abstract
22,390. Gramiccia, C. Oct. 10. Bricks; slabs; tiles.-Bricks and similar building- materials are formed of a composition consisting of various volcanic substances such as lapilli, red and black puzzuolana, " cretoni," and tufa either separately or together mixed with a tenth part of well-slaked lime. After moulding, the bricks are treated with steam at a pressure of from 6 to 8 atmospheres, after which they are rendered fireproof by firing. Gravel, sand, or calcareous substances may be added in quantity not exceeding one-half of the weight of the mixture, and a small quantity of cement should also be added in this case.
GB190622390D1906-10-101906-10-10Fireproof Building Materials Manufactured from an Artificial Conglomerate
ExpiredGB190622390A
(en)