Mechanical Properties and Durability of Latex-Modified Fiber-Reinforced Concrete: A Tunnel Liner Application

Table 8

Standard of permeability levels by ASTM.

Charge passed (Coulombs)	Chloride permeability
>4000	High
2000∼4000	Moderate
1000∼2000	Low
100∼1000	Very low
<100	Negligible