In practical engineering operations, many practitioners are always confused about the concept of concrete strength.
Take C30 concrete, which has the highest frequency of use, for example, you will find many completely different numbers.
The design drawings indicate 30MPa, while the test block obtained 35MPa through pressure testing.
However, the value used for structural calculations was 14MPa, and the strength value obtained from core sampling became 26MPa.
What kind of relationship are all these numbers? It’s really confusing.
I don’t need to use my brain in that line, I just have a handle on it.
This is the boldness and boldness of a true engineer.
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