COLORIMETRIC DETERMINATION OF THE BINDER CONTENT OF BITUMINOUS MIXTURES

A QUICK METHOD FOR DETERMINING BINDER CONTENT MAKES USE OF THE DEPENDENCE OF THE COLOR OF A BINDER SOLUTION ON ITS CONCENTRATION. A SERIES OF INVESTIGATIONS WITH VARIOUS TYPES OF BITUMEN AND SOLVENTS WAS USED TO ESTABLISH REGRESSION LINES AND THE ACCURACY OF THE METHOD. /TRRL/