1 Correction to: Int J Concr Struct Mater (2021) 15:25 https://doi.org/10.1186/s40069-021-00462-z

After publication of the original article (Aryanfar et al., 2021), an error was identified in last equation (13).

The correct equation is:

$$\mu_{{{\text{mix}}}} = \exp \left( {\frac{{WM_{W} }}{{WM_{w} + \left( {1 - W} \right)M_{c} }}\log \mu_{c} + \frac{{\left( {1 - W} \right)M_{c} }}{{WM_{w} + \left( {1 - W} \right)M_{c} }}\log \mu_{w} } \right)$$
(13)

The original article has been corrected.