Seemingly of some interest to your query:

J.B. Segur, H.E. Oberstar, Ind. Eng. Chem.1951, 43,"Viscosity of glycerol and its aqueous solutions", Ind. Eng. Chem., 43(9) 1951, 2117-2120.

J.A. Dean (Ed.), "Lange's Handbook of Chemistry", 15th ed., 1999, McGraw-Hill; cf. Table 5.21, entitled "Aqueous glycerol solutions".