I’m curious to hear about the maximum compressive strength of concrete that you have achieved in laboratory conditions. What values have you recorded?
In laboratory settings, concrete's compressive strength can be significantly enhanced through specialized mix designs and curing processes. While traditional concrete typically exhibits compressive strengths ranging from 2,500 to 5,000 psi (approximately 17 to 34 MPa), advancements in concrete technology have led to the development of Ultra-High Performance Concrete (UHPC), which can achieve compressive strengths up to 30,000 psi (about 207 MPa) after 28 days of curing.
Neville reported a 660MPa cement-based material in his book Properties of Concrete (https://www.pearson.com/en-ca/subject-catalog/p/properties-of-concrete-properties-of-concrete/P200000005116/9780273755807)
In this case you have not used coarse aggregate maybe gravel up to 5 mm. There are many methods for designing concrete mix. And also many models combine Abrams , Bolomey equation, Feret equation, Slater equation and Powers..so which models are available???
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