Pumping equipment: should be attached to the vacuum table and vacuum tank.
Exhaust saturation method, according to the following steps:
A selection of stacked or box-type saturation and vacuum saturation device Stacked under the saturator in the middle of plywood, followed by placing permeable plate, filter paper, with a sample of cutting ring, filter paper, permeable plate, so the order of repetition, overlap from the bottom up to the bar will be high saturation on the plywood cover, the Tighten the top nut bar, the various cutting ring in the upper and lower clamping between the splint.
2 with the sample saturator tank into the vacuum, the vacuum between the tank and covered with a thin layer of Vaseline coated, tightly closed. Will be connected to the vacuum cylinder and air pump, air pump starts, close when the vacuum gauge reading at a local atmospheric pressure (exhaust not less than 1h), micro-open-tube holder so that the water slowly into the vacuum tank, in injection process, the vacuum gauge reading should remain unchanged.
3 to be submerged saturator stop pumping. Folder to open the air into the vacuum tube cylinder, stationary for some time, fine-grained soil appropriate for 10h, the sample fully saturated.
4 Open the vacuum cylinder, remove the belt from the saturated ring knife inside the sample, said cutting ring and the total mass of the sample, according to the standard Calculate the saturation. When the saturation of less than 95% should continue to exhaust saturation.
Exhaust saturation method, according to the following steps:
A selection of stacked or box-type saturation and vacuum saturation device Stacked under the saturator in the middle of plywood, followed by placing permeable plate, filter paper, with a sample of cutting ring, filter paper, permeable plate, so the order of repetition, overlap from the bottom up to the bar will be high saturation on the plywood cover, the Tighten the top nut bar, the various cutting ring in the upper and lower clamping between the splint.
2 with the sample saturator tank into the vacuum, the vacuum between the tank and covered with a thin layer of Vaseline coated, tightly closed. Will be connected to the vacuum cylinder and air pump, air pump starts, close when the vacuum gauge reading at a local atmospheric pressure (exhaust not less than 1h), micro-open-tube holder so that the water slowly into the vacuum tank, in injection process, the vacuum gauge reading should remain unchanged.
3 to be submerged saturator stop pumping. Folder to open the air into the vacuum tube cylinder, stationary for some time, fine-grained soil appropriate for 10h, the sample fully saturated.
4 Open the vacuum cylinder, remove the belt from the saturated ring knife inside the sample, said cutting ring and the total mass of the sample, according to the standard Calculate the saturation. When the saturation of less than 95% should continue to exhaust saturation.