Title: Resolutions Relative to the Transportation and Examination of Trass
Author(s): Society of Hungarian Engineers and Architects, Budapest
Publication: Journal Proceedings
Appears on pages(s): 635-639
All natural and artifical materials which will harden, both in air and water, when mixed with lime are designated Materials Producing Hydraulic Properties. Such materials are the whole series of Tufa of recent volcanic eruptions; among which are the Puzzuolana, Santorin earth, slag, as well as various other mixtures of clay and silica.