SSC JE 2023: What is Compressive Strength Test of Concrete – Cube Test?

Are you ready to answer questions on Cube Test? In this series of blogs, we’ll discuss yet another topic and take mock tests. This is a fun and interactive way to learn about the Compressive Strength Test of Concrete-Cube Test, which is an essential topic for the SSC JE 2023 exam. You will get to answer mock questions (1 Free) similar to the ones you will face in the real exam. Plus, you will get instant feedback and explanations for each question.

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SSC JE 2023: What is Compressive Strength Test of Concrete – Cube Test?

Points to Remember

• This procedure is carried out to determine the compressive strength of concrete.
• If the aggregate’s size is above 20 mm, a 150 mm cube is used; otherwise, a 100 mm cube is used.
• The concrete is filled in layers of 50 mm and compacted with a 16 mm diameter; 60 cm high tamping rod subjected to 35 blows.
• The filled mold is kept in a vibration-free location at 27 ± 2°C and 90% humidity for 24 ± ½ hours.
• Afterward, the sample is immersed in water for adequate curing.
• At the specified testing age, the sample is removed from water and loaded at a rate of 14 N/mm²/min until failure.
• The concrete strength is determined by averaging three results, with a maximum deviation of ±5% between them.
• Loading the specimen induces complex stresses due to the restraining effect of steel plates, arising from differing lateral strains in steel and concrete.
• The lateral strain in steel is 0.4 times that in concrete, causing the test results to be higher.

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Takeaway

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