Basics of Concrete Science by Professor L. Dvorkin, Professor O. Dvorkin - HTML preview
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,
(4
.6)
n
where R – compressive strength of portland cement; А and n c
coefficients (from Graf А=4...8, n=2); W/C – water-cement ratio.
78
Bolomey (based on Feret dependence) determined a formula:
R = К(C / W − 0.5)
(4