TO IMPROVE THE EFFICIENCY OF SILICA FUME CONCRETE

A suitable introduction of silica fume in concrete improves both the mechanical and chemical properties of the concrete. The long-live compressive strength of silica-fume concrete has been recently questioned by some researchers and they were regular in touch of it.This paper reports the results of compressive strength data on strength of silica which is on 4- to 6-year-old cores attained from well-documented field experiments which where both silica-fume and non-silica fume concrete mixtures were used for making any solid concrete. The physical properties of high strength silica fume for making solid concretes and their sensitivity to curing procedures were evaluated and compared with reference Portland cement concretes and having either the same concrete content as the silica fume concrete or the same water to cementations materials ratio. The marked increase in the strength of the silica fume concrete over the two reference concretes, which was observed even at one day, was not accompanied by liberation of excessive heat. After this research we can success to make strong and solid concrete, for making it solid then we have to use of silica in best ratio in cement we can prepare a strong and solid concrete which we can implemented in any building or bridges. Whatever, the compressive strength results are attained on solid concrete cores taken after a 4-year period from an experimental column built with a very high-strength concrete also confirmed that there was no any tendency for strength loss in silica-fume concretes