We know there are two concrete strength testing methods, such as destructive test method and Non-destructive method.
We use both methods to check the compressive strength and characteristic strength of concrete.
But both test methods can be applied to concrete cubes only after 28 days because the concrete requires proper curing to gradually attain its ultimate strength, as mentioned in the table below.
SI | Days | Percentage |
1 | Day 1 | 16% |
2 | Day 3 | 40% |
3 | Day 7 | 65% |
4 | Day 14 | 90% |
5 | Day 28 | 100% |
In some special situations, the cube must be tested earlier to know the strength of concrete to proceed with the construction work without delay. The accelerated curing method helps to test and know the strength of the concrete specimen in earlier after concrete casting.
Usually, the concrete specimen shall be tested after completion of 28 days of concrete curing activity.
The accelerated curing test is a method of curing concrete specimens to attain its yield strength quickly. So, we can know the 28 days of compressive strength of concrete within a day.
How do you accelerate the curing of concrete?
The acceleration concrete curing can be done by following methods,
We discuss the boiling water method, which is mostly used as an accelerated curing method.
IS code for Accelerated Curing Tank
The specification of the accelerated curing tank has been mentioned in IS code 9013. The curing tank should be made of corrosion-resistant material.
The internal size of the curing tank should be accommodating the concrete specimens with sufficient water for immersing. The temperature of curing water should be controllable.
Ra – Crushing value of accelerated concrete cube and the 8.09 is a constant value derived by correlating the test results of normal and accelerated concrete curing methods.
Date | Size of Specimen | Weight in Kgs | Time of water adding to the ingredients | Time of immersion of specimen in curing Tank | Crushing Value | R28 |
Sample 1 | ||||||
Sample 2 | ||||||
Sample 3 |
Happy Learning 🙂
Before starting any civil engineering work, regardless of branches, horizontal, vertical, and angular measurements of…
The data measurements gathered from surveying helps establish the plan and design of all civil…
Surveying is the art and science of civil engineering that determines the relative (comparable) position…
The formation of cracks on the concrete surface may lead to reduce the durability of…
Understanding the different levels of structure seems a bit of a daunting task. Don’t worry…
We knew that pipes are used to transport gas or liquid substance from one place…