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In compressive strength test of concrete as the height to width (H/B) ratio increase, the compressive strength of the specimen (1) Increase (2) Decrease (3) Remain same (4) None?
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Compressive Strength Test of Concrete

The compressive strength test is one of the most important tests conducted on concrete. It is used to determine the maximum load that can be applied to a concrete specimen before it fails. The compressive strength of concrete is an important parameter that is used in the design of structures. The height to width (H/B) ratio of the specimen is an important factor that affects the compressive strength of concrete.

Effect of H/B ratio on Compressive Strength

As the height to width (H/B) ratio of the specimen increases, the compressive strength of the specimen changes. The effect of H/B ratio on compressive strength can be explained as follows:


  • Decrease in Compressive Strength: When the H/B ratio of the specimen is increased, the compressive strength of the specimen decreases. This is because as the height of the specimen increases, the lateral confinement provided by the molds decreases. This reduces the compressive strength of the specimen.

  • Increase in Compressive Strength: When the H/B ratio of the specimen is decreased, the compressive strength of the specimen increases. This is because as the height of the specimen decreases, the lateral confinement provided by the molds increases. This increases the compressive strength of the specimen.

  • Remain the Same: In some cases, the compressive strength of the specimen may remain the same even if the H/B ratio of the specimen is changed. This is because there are other factors that may affect the compressive strength of the specimen, such as the mix design, curing conditions, and the age of the specimen.



Conclusion

In conclusion, the height to width (H/B) ratio of the specimen is an important factor that affects the compressive strength of concrete. As the H/B ratio of the specimen increases, the compressive strength of the specimen decreases. As the H/B ratio of the specimen decreases, the compressive strength of the specimen increases. However, there are other factors that may affect the compressive strength of the specimen, and therefore, the effect of H/B ratio on compressive strength may not always be straightforward.
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In compressive strength test of concrete as the height to width (H/B) ratio increase, the compressive strength of the specimen (1) Increase (2) Decrease (3) Remain same (4) None?
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