Numerical 1 - Liquid Limit, Plastic Limit, Shrinkage Limit - Plasticity Characteristics of Soils | Summary and Q&A

TL;DR

This video discusses numerical problems related to the plasticity characteristics of soils, including the determination of the specific gravity and shrinkage limit.

Key Insights

• ⛔ Plasticity characteristics of soils, such as liquid limit and shrinkage limit, are essential for understanding their behavior.
• 💆 Numerical problems involving volume and mass measurements help determine specific gravity and shrinkage limit.
• 💦 The formula for specific gravity considers the mass of solids, volume of saturated soil, and density of water.
• 💆 Shrinkage limit calculations involve subtracting volume and mass values and dividing by the mass of the saturated soil.

Transcript

hello students today we are going to learn about the next topic in chapter 2 that is plasticity characteristics of the soils coming to the next topic it is dealing with the numerical problems based on the liquid limit plastic limit and shrinkage limit this is the first problem a sample of clay which is having the liquid limit and the shrinkage limi... Read More

Questions & Answers

Q: What is the first numerical problem discussed in the video?

The first problem involves determining the specific gravity of soil solids based on volume measurements at the liquid limit and shrinkage limit. It requires subtracting the water loss between the two limits and equating it to the actual reduction in volume.

Q: How is the shrinkage limit calculated in the second problem?

In the second problem, the shrinkage limit is calculated using the formula ws = (ms - m1 - v1 - v2) / ms, where ws is the shrinkage limit, ms is the mass of the saturated soil, m1 is the mass of the dry soil, v1 is the volume of the saturated soil, and v2 is the volume of the dry soil.

Q: What is the formula for determining the specific gravity of the solids?

The formula for determining the specific gravity of the solids is given by ms / v1, where ms is the mass of the solids and v1 is the volume of the saturated soil. This formula accounts for the density of water (rho w) and the mass loss during shrinkage.

Q: What units are used in the calculations?

The units used in the calculations are grams and milliliters. However, the specific gravity values obtained in the calculations are unitless.

Summary & Key Takeaways

• The video covers numerical problems related to the liquid limit, plastic limit, and shrinkage limit of soils.

• The first problem involves determining the specific gravity of soil solids based on volume measurements at the liquid limit and shrinkage limit.

• The second problem focuses on calculating the shrinkage limit and specific gravity of soils using volume and mass observations.