MIX DESIGN FOR HIGH STRENGTH CONCRETE WITH PORTLAND CEMENT AND SILICA FUME

The common method used to design mix with silica fume depends on similarity between projects requirements and make trail batches if the re was a different. This study aims to build a design method for high strength silica fume concrete which covers a compressive strength (41-90) MPa, maximum aggregate size (14 to 25) mm, replacement level (5, 10, 15) % by wt. of cement and w/c+p (0.22-0.45) and make a trails mixtures to che ck its validation and modify it. This method based fixing cementitious material on (520) kg/m 3 , it contains tables for select: maximum aggregate size, coarse aggregate content, w/c+p and silica fume replacement, air content, and initial dosage of SP to produce (50-75) mm slump.