FAIRCRETE C (NITRITE FREE)BIPOLAR CORROSION INHIBITOR

CONCRETE ADMIXTURE

What is Corrosion ?Corrosion is the destructive attack to metal by a chemical or

electrochemical reaction with its Environment. The terms corrosion

and rusting are often used interchangeably. The term “rust” typically

is applicable to ferrous materials, iron and steel. The most term to

use is "corrosion" because it is inclusive of non-ferrous metals as

well.

Passivity of SteelUnder certain conditions steel is passive, where the corrosion rate for

the metal is relatively low. Iron is considered an active-passive metal

and therefore steel behaves similarly. Passivity, defined simply,

refers to a loss of chemical reactivity under certain conditions. Steel

achieves this by having a passive film form along its surface.

Corrosion FactorsThe cement paste in concrete is alkaline with a pH typically between

12 and 14. This paste surrounds reinforcing steel in concrete. Many

researchers believe this alkaline environment facilitates the protective

passive film around the steel. The passive film is not invulnerable,

though. It can be damaged both chemically and mechanically.

Benefits Corrosion protection for embedded reinforcing steel, especially

from chloride attack Protection from the destructive influences of reinforcement

corrosion. No negative influences on the properties of both the fresh and the

hardened concrete. Non- toxic and eco friendly. Penetrates to rebar over a prolonged period and arrest corrosion

of rusting steel. Nitrite and chromate free. Effective if the presence of high amount of chloride content. Non deleterious unlike conventional corrosion inhibitors. Does not affect mechanical strength of concrete/ mortar.

DescriptionFAIRCRETE C (NITRITE FREE) is a corrosion inhibitor system which

works on the Bipolar Inhibitor Mechanism (B.I.M.). By using FAIRCRETE C

(NITRITE FREE) both the anodic and cathodic reactions of the

electrochemical corrosion process are reduced. The product forms a profile

on the steel surface which delays the onset of corrosion and hence this

molecular layer continues to protect rebar by its constant presence.

FAIRCRETE C (NITRITE FREE) is a liquid concrete admixture by virtue of

its high vapor pressure & affinity for the embedded metal diffuses through

densest concrete to reach the corroding steel.

Uses

Typical Uses are in : Concrete roads Bridges Tunnels Cooling towers, Chimney and Power plants Retaining walls Railway sleepers and Mooring Berths. Jetties and Docks Industrial plants Multi storey car parks RCC elements / structures exposed to corrosive environment Marine and Coastal structures

FAIRCRETE C (NITRITE FREE) is a bipolar corrosion inhibitor designed for reinforced concrete particularly at risk of corrosion. It specially provides protection on from chloride induced corrosion.

Typical Properties

BASE : Water based

organic corrosion inhibitor.

Appearance : Brownish Colour

Liquid.

Odor : Mild Ammonical

Odor

Specific Gravity : 1.040 to 1.060 at 27

+ 2ºC

pH : 10 ± 1

Packing & Dosage

FAIRCRETE C (NITRITE FREE) is supplied in 1,5,10,50,100

and 200 ltrs. The dosage of FAIRCRETE C (NITRITE FREE) is

0.5 % to 1 % by weight of cement, depending on the grade of

concrete.