Activity Index of Soil Calculator

✖Plasticity Index is difference between liquid limit and plastic limit.ⓘ Plasticity Index [I_p]			+10% -10%
✖Percentage of Clay Fraction is the amount of particle which have size less than clay particles.ⓘ Percentage of Clay Fraction [μ]			+10% -10%

✖Activity Index of soil can be defined as ratio of plasticity index to clay fraction as percentage.ⓘ Activity Index of Soil [A_c]

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Formula

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Activity Index of Soil

Formula

`"A"_{"c"} = ("I"_{"p"}/"μ")`

Example

`"6"=("1.2"/"0.20")`

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Activity Index of Soil Solution

STEP 0: Pre-Calculation Summary

Formula Used

Activity Index = (Plasticity Index/Percentage of Clay Fraction)
A_c = (I_p/μ)
This formula uses 3 Variables

Variables Used

Activity Index - Activity Index of soil can be defined as ratio of plasticity index to clay fraction as percentage.
Plasticity Index - Plasticity Index is difference between liquid limit and plastic limit.
Percentage of Clay Fraction - Percentage of Clay Fraction is the amount of particle which have size less than clay particles.

STEP 1: Convert Input(s) to Base Unit

Plasticity Index: 1.2 --> No Conversion Required
Percentage of Clay Fraction: 0.2 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

A_c = (I_p/μ) --> (1.2/0.2)

Evaluating ... ...

A_c = 6

STEP 3: Convert Result to Output's Unit

6 --> No Conversion Required

FINAL ANSWER

6 <-- Activity Index

(Calculation completed in 00.004 seconds)

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Credits

Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

Suraj Kumar has created this Calculator and 2200+ more calculators!

Verified by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

Ishita Goyal has verified this Calculator and 2600+ more calculators!

< 16 Atterberg Limits Calculators

Angle of Internal Friction for Soil

Go Angle of Internal Friction = arctan(Shear Force on Soil/Normal Force on Soil)

Moisture Content of Soil given Liquidity Index

Go Water Content of Soil = ((Liquidity Index*Plasticity Index)+Plastic Limit)

Plasticity Index of Soil given Liquidity Index

Go Plasticity Index = (Water Content of Soil-Plastic Limit)/Liquidity Index

Liquidity Index of Soil

Go Liquidity Index = (Water Content of Soil-Plastic Limit)/Plasticity Index

Shearing Force on Plane when Sliding on Plane is Impending

Go Shear Force on Soil = (Normal Force on Soil*Coefficient of Internal Friction)

Normal Force on given Plane in Cohesionless Soil

Go Normal Force on Soil = (Shear Force on Soil/Coefficient of Internal Friction)

Coefficient of Internal Friction for Soil

Go Coefficient of Internal Friction = (Shear Force on Soil/Total Normal Force)

Percent of Soil Finer than Clay Size given Activity Index

Go Percentage of Clay Fraction = (Plasticity Index/Activity Index)

Plasticity Index of Soil given Activity Index

Go Plasticity Index = (Activity Index*Percentage of Clay Fraction)

Activity Index of Soil

Go Activity Index = (Plasticity Index/Percentage of Clay Fraction)

Shrinkage Limit of Soil given Shrinkage Index

Go Shrinkage Limit = (Plastic Limit-Shrinkage Index)

Plastic Limit of Soil given Shrinkage Index

Go Plastic Limit = (Shrinkage Index+Shrinkage Limit)

Shrinkage Index of Soil

Go Shrinkage Index = (Plastic Limit-Shrinkage Limit)

Plastic Limit of Soil given Plasticity Index

Go Plastic Limit = Liquid Limit-Plasticity Index

Liquid Limit of Soil given Plasticity Index

Go Liquid Limit = Plasticity Index+Plastic Limit

Plasticity Index of Soil

Go Plasticity Index = Liquid Limit-Plastic Limit

Activity Index of Soil Formula

Activity Index = (Plasticity Index/Percentage of Clay Fraction)
A_c = (I_p/μ)

What is Activity Index of Soil?

Activity Raito, sometimes called the Activity Index (AI), is defined as the ratio of the plastic index to the percentage of clay sized minerals.The amount of water is a soil mass depend upon the type of clay mineral present. Activity is a measure of the water holding capacity of clay soil. The changes in the volume of a clay in soil during swelling or shrinkage depends upon activity.

How to Calculate Activity Index of Soil?

Activity Index of Soil calculator uses Activity Index = (Plasticity Index/Percentage of Clay Fraction) to calculate the Activity Index, The Activity Index of Soil is defined as the ratio of the plastic index to the percentage of clay sized minerals. Activity Index is denoted by A_c symbol.

How to calculate Activity Index of Soil using this online calculator? To use this online calculator for Activity Index of Soil, enter Plasticity Index (I_p) & Percentage of Clay Fraction (μ) and hit the calculate button. Here is how the Activity Index of Soil calculation can be explained with given input values -> 6 = (1.2/0.2).

FAQ

What is Activity Index of Soil?

The Activity Index of Soil is defined as the ratio of the plastic index to the percentage of clay sized minerals and is represented as A_c = (I_p/μ) or Activity Index = (Plasticity Index/Percentage of Clay Fraction). Plasticity Index is difference between liquid limit and plastic limit & Percentage of Clay Fraction is the amount of particle which have size less than clay particles.

How to calculate Activity Index of Soil?

The Activity Index of Soil is defined as the ratio of the plastic index to the percentage of clay sized minerals is calculated using Activity Index = (Plasticity Index/Percentage of Clay Fraction). To calculate Activity Index of Soil, you need Plasticity Index (I_p) & Percentage of Clay Fraction (μ). With our tool, you need to enter the respective value for Plasticity Index & Percentage of Clay Fraction and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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