Strength, bond and durability related properties of concretes with mineral admixtures

This paper reports the strength, bond and durability related properties of concretes with fly ash and silica fume as cement replacement materials (CRM). It includes out pullout tests carried out following IS 2770 (Part-I) and RILEM. While the durability properties obtained were on the expected lines, the bond performance in specimens with 30 percent fly ash and 10% silica fume showed lower strengths, with 6 to 16% variations, compared to the concretes of OPC alone. Nevertheless, the bond stresses were higher than those recommended by IS 456:2000.