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Plastic limit test1/11/2024 If a closure of 13 mm is achieved at between 30 and 35 drops, proceed with step 4. So, the distance between them with the succession of beats is narrowed until they are applied to each other with a distance of 13 mm. Which makes the two divided soil parts flow to each other. The hand of the device is managed at a rate of two turns per second, which is the rate of knocking the plate on the base. This tool makes the distance between the two sections about 3 mm and at the same times confirms that the thickness of the sample in the plate is exactly 1 cm. Part of the sample is placed in about one-third of the front of a plate using a spatula, level the soil pat to a thickness of 1 cm.Ī sample in the plate is divided into two parts using the grooving tool (there are two models for these tools, each arming for certain types of soil according to its viscosity). Mixing sample with around 3 to 5 ml and thoroughly mix by chopping, mixing, and kneading. Remove from the container the soil to be used for the liquid limit test.
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