Table of Contents
- 1 How do you find D10 in sieve analysis?
- 2 How do you classify the soil by sieve analysis?
- 3 Which one of the following method is used for grading coarser particles?
- 4 What is well graded soil?
- 5 What is represented by D10?
- 6 What is coarse graded aggregate?
- 7 How do you calculate particle size using sieve?
- 8 What is D10 and D50?
- 9 What should be done before sieving the soil?
- 10 What is the difference between D10 and D60 grade of soil?
How do you find D10 in sieve analysis?
The particle diameters defining 10\%, 30\%, and 60\% finer from the grain-size distribution curve are estimated as: D10 = 0.14 mm , D30 = 0.27 mm, and D60 = 0.42 mm….2.8 Example Sieve Analysis.
| Sieve Number | Diameter (mm) | Mass of soil retained on each sieve (g) |
|---|---|---|
| 40 | 0.425 | 128 |
| 60 | 0.250 | 221 |
| 100 | 0.150 | 86 |
| 200 | 0.075 | 40 |
How do you classify the soil by sieve analysis?
General Classification
- Boulders: grain size > 300 mm.
- Cobbler: grain size- 80 to 300 mm.
- Gravel: grain size- 4.75 to 80 mm.
- Coarse sand: grain size- 2 to 4.75 mm.
- Medium sand: grain size- 0.425 to 2 mm.
- Fine sand: grain size- 0.0075 to 0.425 mm.
- Silt: grain size- 2 micron to 75 micron.
- Clay: grain size < 2 micron.
Which one of the following method is used for grading coarser particles?
A sieve analysis or gradation test determines the distribution of aggregate particles by size within a given sample.
How do you find the particle size distribution of soil?
In soil analysis, the proportion of gravel and larger particles is determined by first grinding the soil to disaggregate it and then passing it through a 2 mm sieve. What remains in the sieve is weighed and it’s proportion calculated as a percentage of the whole soil sample.
What does D10 mean?
D10: The portion of particles with diameters smaller than this value is 10\% D50: The portions of particles with diameters smaller and larger than this value are 50\%. Also known as the median diameter. D90: The portion of particles with diameters below this value is 90\%.
What is well graded soil?
A well graded soil is a soil that contains particles of a wide range of sizes and has a good representation of all sizes from the No. 4 to No. 200 sieves. A well graded gravel is classified as GW while a well graded sand is classified as SW.
What is represented by D10?
Explanation: The size D10 is sometimes called as the effective size or effective diameter. Cc = (D30)2/D10×D60. i.e.CV = D60/ D10. Explanation: The D10 represents a size, in mm such that 10\% of the particle is finer than D10 size.
What is coarse graded aggregate?
Coarse aggregate can be described as uncrushed, crushed, or partially crushed gravel or stone. This type of aggregate is described as how it is graded. For example, ¾” nominal size graded aggregate means that most of the aggregate passes a 3/4” sieve.
What is grading of coarse aggregate?
The graded coarse aggregate is defined by its nominal size i.e., 40 mm, 20 mm, 16 mm, 12.5 mm, etc. For example, a graded aggregate of nominal size 12.5 mm means an aggregate most of which passes the 12.5 mm IS Sieve. For a given quantity of water and paste, bigger size of aggregate will give higher workability.
What is D10 soil?
D10 is called as effective particle size. This means that 10\% percent of the particles are finer and 90\% of the particles are coarser than D10. This is the size at 10\% finer by weight. Similarly, D60 is the particle size at which 60\% of the particles are finer and 40\% of the particles are coarser than D60 size.
How do you calculate particle size using sieve?
Procedure:
- Take the required quantity of the sample.
- Sieve the sample through the set of coarse sieves by hand.
- Determine the mass of the material retained on each sieve.
- Calculate the percentage of soil retained on each sieve on the basis of the total mass of the sample, taken in step (1).
What is D10 and D50?
D10: The portion of particles with diameters smaller than this value is 10\% D50: The portions of particles with diameters smaller and larger than this value are 50\%. Also known as the median diameter.
What should be done before sieving the soil?
Before sieving, the soil should be air dried in order to avoid lumps of fine particles and also to prevent clogging of the finer sieves. Sieves should also be cleaned before use. The actual sieving operation can be done by hand or as in modern laboratories by a sieve shaker.
What is the meaning of D10 in sieve size?
For eg:- Following data is given. D10 means effective size of a particular soil. Here 10 means percentage of particles smaller than the particular soil size. These values are calculated from fineness modulas which is obtained by dividing cumulative weight retained on a particular sieve by a constant which is usually 100.
What is the significance of the ddd10 value in soil mechanics?
D 10 is an important value in regulating flow through soils and can significantly influence the mechanical behavior of soils. The grain size characteristics of soils that are predominantly coarse grained are evaluated by a sieve analysis.
What is the difference between D10 and D60 grade of soil?
D60 and D10 sizes are close to each other, which means there are more no. of particles are in the same size range ), the soil is considered as uniformly graded. If Cu is away from 1, the soil is well graded (ie. it has a vareity of size range distributed well ). For gravel, if Cu>4, it is well graded.