THE PERFORMANCES OF PUTTY LININGS ON METALLIC AND CONCRETE SURFACES

The performances of putty linings were estimated after comparative stu dies under laboratory and under natural and industrial conditions. The corrosion media for the laboratory studies were acid and alkaline sol utions of various concentrations, sea water, all at high temperatures, salty fog and tests at low temperatures. Also, studies under natural and industrial conditions we-re carried out in urban environment, in m arine environment and in some corrosive media from the chemical indust ry (cisterns, various reaction vessels and filtration vessels). Estima tes of the protective properties were made following qualitative (visu al observations) and quantitative (percentage modification of the weig ht, loss in weight, liquid absorption, hardness, bending resistance, c ompressing resistance) measurements. The performances of these materia ls were defined in terms of the corrosion media, the temperature range and the efficiency time.