Evaluation of Concrete Durability Performance with Sodium Silicate Impregnants

Table 7

Decrease ratio of electrical potential after 2 years.

Period (days)	Condition	Control	C type	I type
		Decrease ratio of potential (21 MPa: %)
720	Tidal	100.0	93.6	88.6
	Submerged	100.0	91.8	82.4
	Salt-sprayed	100.0	78.5	69.2
		Decrease ratio of potential (34 MPa: %)
720	Tidal	100.0	91.6	84.8