This paper presents the fluidity and compressive strength of concrete conta
ining ultrafine fly ash composite (UFAC). The experimental results indicate
that UFAC can improve the fluidity and compressive strength of concrete at
30-70% replacement of cement. UFAC concrete had been prepared with a large
r slump, higher compressive strength, lower slump loss and lower drying shr
inkage ratio. (C) 2000 Elsevier Science Ltd. All rights reserved.