Basics of Concrete Science by Professor L. Dvorkin, Professor O. Dvorkin - HTML preview
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(5.3)
τ
where C=1900; γ = 0.5.
91
In the case of high-quality aggregates (crushed granite and quartz sand)
using, as it is shown by E.Sherbakov the following formula can be used:
−4
R
3
.
5
Е ⋅10
τ
=
(5.4)