Electrical Resistivity of Concrete for Durability Evaluation: A Review

Table 7

Coefficient of determination (COD) value for linear trend between bulk and surface resistivity in the literatures.

Reference	Coefficient of determination value ()
Sengul and Gjorv [37] (2008)	0.99
Sengul and Gjorv [8] (2009)	0.99
Spratt et al. [39] (2011)	0.9986
Ghosh and Tran [61] (2015)	0.82–0.95
Gudimettla and Crawford [53] (2016)	0.98
Authors’ work (2016)	0.979