In the present work, the use of nano silica fume in developing a compressive strength of concrete that can lead to improvement in concrete construction is carried out in the present work. One of the parameters considered is a number of curing days for measuring the compressive strength. The measured results demonstrate the increase in compressive. To achieve our goals, concrete cubes were cast and tested for compressive strength, all concrete sample has the same mixing ratio and sub-classified to standard, and Silica fume added by weight of cement (5%, 10%, 15%, 20% and 30%). The results show that the recommended addition was 15% of Silica fumes for optimum compressive strength that reaches 74.8 MPa.

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