FAUJAS DE SAINT-FOND, Barthelemy

Recherches sur la Pouzzolane, sur la Théorie de la Chaux et sur la Cause de la Dureté du Mortier, avec la Composition de différens Cimens en Pouzzolane, & la maniere de les employer, tant pour les Bassins, Aqueducs, Réservo

      4 p.l., x, 125 pp. 8vo, attractive antique calf-backed speckled boards, spine gilt, red morocco lettering piece on spine. Grenoble: J. Cuchet; Paris: Nyon, 1778.p First separate edition. The chemistry of cement is very complex and was only fully understood in the mid-19th century. This work, by the great geologist Faujas (1741-1819), describes the chemical properties of pozzolana, similar to cement, which was known to and utilized by the ancient Roman builders and engineers. Faujas also discusses its uses in civil engineering works in modern times. !In 1775 he discovered a rich pozzolana mine on Mount Chenavary, which was used by the French government for building the port of Toulon. The use of pozzolana (a volcanic ash containing silica, alumina, lime, etc.) for the preparation of mortars and hydraulic cements is covered in this work, as is the chemistry of these materials.!!Neville, I, p. 447. A fine copy. ❧ D.S.B., IV, pp. 548-49.. First Edition. Hard cover.