Blends of fatty acids and their ester are acting at low doses on the rheology of bitumen as well as on a chemically way by modifying their molecular chains and ameliorating their original properties.
The property of those greenseal is their measurably organic radicals :

« R-COOH » quantifies the acid value (IA) parameter of their molecular mass of carboxilic acids of aliphatic chains
« R> C=C< R » quantifies the iodine value ( II) , corresponding with their double bindings
« R-COOR » quantifies the saponification value (IS) corresponding with the saponification of their esteried fatty acids.

By additionning the measured organic radical of the IA, II and IS a typical REACTIVITY INDEX = Ire, expressed in ppm is obtained and finally corresponding with their total power reactivity with the asphaltenes and maltenes of the bitumen which finally modifies favourably their original mechanical and chemical properties.
Due to those specific organic radicals, performing asphalt is obtained for several typical road appliances :