SALING PROFILOGRAPH SAND SPRAYING MACHINE

SALING PROFILOGRAPH Profilographe Saling

Equipment and Tools

A profilograph wagon that transversely spots the vault of a tunnel thanks to a mechanical system made up of a probing arm added with a reducing pantograph allowing to draw the section of a tunnel at the tenth. (This profilograph is replaced by the photoprofile wagon.)

SALT Sel

Materials

A granulated substance resulting from the action of an acid on a base, or a base on a metal.

SALTATION Saltation

Geomorphology

A mode of displacement by jumps of the coarse alluvial particles, which concerns the remains too large to be taken in suspension and occurs when the stream velocity crosses a certain threshold. Under the effect of the wind, sand is always carried in saltation; only silts are carried in suspension.

SALTPETER Nitrate de sodium

Mineralogy

A mineral of chemical precipitation.

SALTPETER FORMATION Salp trage

Defects

The appearance, formation of saltpeter onto the surface of a facing.

SALT-SPRAY TEST Test du brouillard salin

Test of Materials (Painting and Metallurgy)

A test for determining the painting's resistance to the corrosion (or other protective coatings) exposed to a marine atmosphere. This test consists in testing painting samples (or other protective coatings) under saline fog with repeated alternations of saline water spraying.

SAMPLE Pr l vement; Echantillon

Building Materials

1. A sample carved in a material or taken from a material heap and intended for putting through the analyses or various tests.

2. A quantity of aggregates extracted from a batch in only once and...