Presentation for FICCI Presentation for FICCI By By Dr Y.P.Kapoor Dr Y.P.Kapoor Dr Y.P.Kapoor Dr Y.P.Kapoor Managing Director Managing Director Bang Associates Bangalore Bang Associates Bangalore Construction Chemicals and Construction Chemicals and Protective Coatings Protective Coatings 10 10 th th February 2012 February 2012
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Presentation for FICCIPresentation for FICCIByBy
Dr Y.P.KapoorDr Y.P.KapoorDr Y.P.KapoorDr Y.P.KapoorManaging DirectorManaging Director
Bang Associates BangaloreBang Associates BangaloreConstruction Chemicals andConstruction Chemicals and
Protective CoatingsProtective Coatings1010thth February 2012February 2012
Protective Coatings
Rebar Concrete
Site Application
Rebar Concrete
Factory/site
applicationBrush/spray
Protective Coatings
Resins
Solvents
PERFORMANCE
APPLICATIONSolvents
Pigments AESTHETICS
APPLICATION
Key properties of protective coatings for Key properties of protective coatings for concreteconcrete
•• Alkali ResistanceAlkali Resistance•• Water ResistanceWater Resistance•• FlexibilityFlexibility•• FlexibilityFlexibility•• BreathabilityBreathability•• U V ResistanceU V Resistance•• Carbonation ResistanceCarbonation Resistance•• ClCl--, , SOSO4 4
•• Integral…such as using Integral…such as using admixturesadmixtures–– To reduce the water cement To reduce the water cement
ratio and hence the ratio and hence the permeability of concretepermeability of concretepermeability of concretepermeability of concrete
–– To use cement replacement To use cement replacement materials which would materials which would introduce more hydration introduce more hydration products in the capillary system products in the capillary system of the concrete and reduce the of the concrete and reduce the pore size distribution in pore size distribution in concreteconcrete
Cement ReplacementsCement Replacements
•• AsAs strengthstrength developmentdevelopment inin OPCOPC isis limitedlimited toto primaryprimary hydrationhydrationproducts,products, itit isis aa necessitynecessity toto increaseincrease ultimateultimate strengthsstrengths byby useuseofof goodgood qualityquality cementcement replacementsreplacements havinghaving highhigh pozzolanicpozzolanicactivityactivity suchsuch asas::
–– FlyFly ashash (ASTM(ASTM CC 618618,, BSBS 38923892,, etcetc..))
–– GGBFSGGBFS (BS(BS 66996699,, etcetc..))
–– SilicaSilica fumefume (ASTM(ASTM CC 12401240,, etcetc..))