28-Day Concrete Compressive Strength Calculator

✖The 7 Day Compressive Strength achieved by concrete at 7 days is about 65% and at 14 days is about 90% of the target strength.ⓘ 7 Day Compressive Strength [S₇]

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✖28 Day Compressive Strength of Concrete is defined as the strength of the concrete after 28 days of using it.ⓘ 28-Day Concrete Compressive Strength [f_c]

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28-Day Concrete Compressive Strength Solution

STEP 0: Pre-Calculation Summary

Formula Used

28 Day Compressive Strength of Concrete = 7 Day Compressive Strength+(30*sqrt(7 Day Compressive Strength))
f_c = S₇+(30*sqrt(S₇))
This formula uses 1 Functions, 2 Variables

Functions Used

sqrt - A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number., sqrt(Number)

Variables Used

28 Day Compressive Strength of Concrete - (Measured in Pascal) - 28 Day Compressive Strength of Concrete is defined as the strength of the concrete after 28 days of using it.
7 Day Compressive Strength - (Measured in Megapascal) - The 7 Day Compressive Strength achieved by concrete at 7 days is about 65% and at 14 days is about 90% of the target strength.

STEP 1: Convert Input(s) to Base Unit

7 Day Compressive Strength: 4.5 Megapascal --> 4.5 Megapascal No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

f_c = S₇+(30*sqrt(S₇)) --> 4.5+(30*sqrt(4.5))

Evaluating ... ...

f_c = 68.1396103067893

STEP 3: Convert Result to Output's Unit

68.1396103067893 Pascal -->6.81396103067893E-05 Megapascal (Check conversion here)

FINAL ANSWER

6.81396103067893E-05 ≈ 6.8E-5 Megapascal <-- 28 Day Compressive Strength of Concrete

(Calculation completed in 00.004 seconds)

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Credits

Created by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

Ishita Goyal has created this Calculator and 500+ more calculators!

Verified by Chandana P Dev

NSS College of Engineering (NSSCE), Palakkad

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< Compression Calculators

28-Day Concrete Compressive Strength

LaTeX Go 28 Day Compressive Strength of Concrete = 7 Day Compressive Strength+(30*sqrt(7 Day Compressive Strength))

Bulk Modulus given Direct Stress

Go Bulk Modulus = Direct Stress/Volumetric Strain

28-Day Concrete Compressive Strength given Water Cement Ratio

LaTeX Go 28 Day Compressive Strength of Concrete = (2700*Water Cement Ratio)-760

Water Cement Ratio given 28-Day Concrete Compressive Strength

LaTeX Go Water Cement Ratio = (28 Day Compressive Strength of Concrete+760)/2700

28-Day Concrete Compressive Strength Formula

LaTeX Go

28 Day Compressive Strength of Concrete = 7 Day Compressive Strength+(30*sqrt(7 Day Compressive Strength))
f_c = S₇+(30*sqrt(S₇))

What is Compressive Strength?

Compressive strength is defined as the strength of the concrete below which not more than 5% of the test results are expected to fall.

How to Calculate 28-Day Concrete Compressive Strength?

28-Day Concrete Compressive Strength calculator uses 28 Day Compressive Strength of Concrete = 7 Day Compressive Strength+(30*sqrt(7 Day Compressive Strength)) to calculate the 28 Day Compressive Strength of Concrete, The 28-Day Concrete Compressive Strength formula is defined as the characteristic compressive strength of 150mm size cubes tested at 28 days as per the Indian standards. 28 Day Compressive Strength of Concrete is denoted by f_c symbol.

How to calculate 28-Day Concrete Compressive Strength using this online calculator? To use this online calculator for 28-Day Concrete Compressive Strength, enter 7 Day Compressive Strength (S₇) and hit the calculate button. Here is how the 28-Day Concrete Compressive Strength calculation can be explained with given input values -> 6.8E-11 = 4500000+(30*sqrt(4500000)).

FAQ

What is 28-Day Concrete Compressive Strength?

The 28-Day Concrete Compressive Strength formula is defined as the characteristic compressive strength of 150mm size cubes tested at 28 days as per the Indian standards and is represented as f_c = S₇+(30*sqrt(S₇)) or 28 Day Compressive Strength of Concrete = 7 Day Compressive Strength+(30*sqrt(7 Day Compressive Strength)). The 7 Day Compressive Strength achieved by concrete at 7 days is about 65% and at 14 days is about 90% of the target strength.

How to calculate 28-Day Concrete Compressive Strength?

The 28-Day Concrete Compressive Strength formula is defined as the characteristic compressive strength of 150mm size cubes tested at 28 days as per the Indian standards is calculated using 28 Day Compressive Strength of Concrete = 7 Day Compressive Strength+(30*sqrt(7 Day Compressive Strength)). To calculate 28-Day Concrete Compressive Strength, you need 7 Day Compressive Strength (S₇). With our tool, you need to enter the respective value for 7 Day Compressive Strength and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate 28 Day Compressive Strength of Concrete?

In this formula, 28 Day Compressive Strength of Concrete uses 7 Day Compressive Strength. We can use 1 other way(s) to calculate the same, which is/are as follows -

28 Day Compressive Strength of Concrete = (2700*Water Cement Ratio)-760

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