Very-high-performance concrete with ultrafine powders

Abstract

The compactness and fluidity of binary and ternary compound paste systems containing ultrafine powders such as pulverized fly ash (PFA), pulverized granulated blast furnace slag (PS) and silica fume (SF) were quantitatively studied with the relative density (d/d0) index. Through optimization of the proportions of compositions and applying heat treatment to specimens, a very-high-performance concrete (VHPC) including large quantities of ultrafine powders has been made successfully, which offers compressive strength up to 200 MPa. Two methods of overcoming the brittleness of VHPC were investigated.