TY - JOUR T1 - Chaotropic substances and their effects on the mechanical strength of Portland cement-based materials JO - Materials Research A1 - Rossetto, Hebert Luis A1 - Souza, Milton Ferreira de A1 - Pandolfelli, Victor Carlos SN - 1516-1439 UL - 10.1590/S1516-14392008000200012 VL - 11 Y1 - 2008 PB - Brasil ER -