I have a various data for the compressive and the tensile strengths of concrete mixes. Unfortunately, these mixes have a different w/c ratio. But in my work (modelling of the caracterestic of concrete), I must keep w/c constant.

So, how can I align (or correct) the value of the compressive and the tensile strengths of these different concrete inatialy formulated with different w/c ratio to have their strengths for a fixed w/c value ? Or simply how to estimate the concrete strength for a fixed w/c knowing its strength for another value of w/c? Are there any model?

Thank you.