EFFECT OF TREATED WASTE WATER ON RAPID CHLORIDE ION PERMEABILITY OF M25 GRADE CONCRETE.

Among the variety of factors which influence the durability of concrete structures, chloride ions ingress is one of the governing factors enhancing the corrosion and reducing the durability at a faster rate. With the continuous infiltration of Cl- ions the passivating layer that protects the concrete is disturbed rendering it more vulnerable to corrosive effects. In this research the effect of using treated waste water on chloride ion permeability of M25 grade concrete is studied. For optimizing the use of treated waste water cube specimens were cast using variable proportions of treated waste water and potable water such as: 50%, 75%, 100% and comparison was done with potable water results. Out of the various proportions of treated waste water and potable water used, for M25 grade concrete 75%TWW exhibited superior RCPT result.