. Soils, their properties and management. Soils. 94 SOILS: PROPERTIES AND MANAGEMENT the clay are decanted directly Into a test tube fitted into a centrifuge (see Fig. 15). Whirling at the rate of 800 to 1000 revolutions a minute will cause the subsidence of the silt to the bottom of the test tube in a few minutes. The clay is then decanted. The microscope is necessary here, in order to determine when the settling of the silt is complete. As small particles tend to cling to the larger particles, the entire operation must be repeated. Fig. 15. — Apparatus for centrifugal mechanical analysis of
. Soils, their properties and management. Soils. 94 SOILS: PROPERTIES AND MANAGEMENT the clay are decanted directly Into a test tube fitted into a centrifuge (see Fig. 15). Whirling at the rate of 800 to 1000 revolutions a minute will cause the subsidence of the silt to the bottom of the test tube in a few minutes. The clay is then decanted. The microscope is necessary here, in order to determine when the settling of the silt is complete. As small particles tend to cling to the larger particles, the entire operation must be repeated. Fig. 15. — Apparatus for centrifugal mechanical analysis of soil, show- ing shaker bottle, shaker, centrifuge, and test tube. several times; therefore the processes of gravity sub- sidence and centrifugal subsidence are carried on side by side, material being constantly poured from the shaker bottle into the centrifuge tubes and from the test tubes into the receptacles for the clay. The centrifuge is usually large enough to allow the separation of several duplicate samples at once. The various separates made by this method are dried and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lyon, T. L. (Thomas Lyttleton), 1869-1938; Fippin, Elmer O. (Elmer Otterbein), 1879-1949; Buckman, Harry Oliver, 1883-. New York, Macmillan
Size: 1660px × 1505px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlyontlth, bookcentury1900, bookdecade1910, bookyear1915
