TY - SER AU - Pérez-Lepe,A. AU - Martínez-Boza,F.J. AU - Martínez-Boza,F.J. TI - Influence of polymer concentration on the microstructure and rheological properties of high-density polyethylene (HDPE)- modified bitumen KW - Polímeros KW - Polietileno KW - Bitúmenes ER -