Rice husk ash

Rice husk ash giving required performance and uniformity characteristics may be used with the approval ofthe deciding authority. NOTE-Rice husk esh is produced by burning rice husk and contain largeproportion of silica.To achieve amorphous state, ricehuskahay beburntat controlledtemperature, Itis necessary toevoluat8 the productfroma particularsourcefor performance and unirofmity since it con ran,e from beinl as deleteriousas silt when.~ncorporated in concrete. Waterdemand and dryinl shrinkage ',should be studiedbefore using rice husk.