Analysis of Silica Fume and Nano Silica Microstructure in High Performance Concrete
Keywords:
Fine Aggregate, Water, Super Plasticizers, Silica Fume (SF),, Nano Silica (NS)Abstract
High performance concrete often has a water-to-cement ratio that is lower than traditional concrete in order to achieve the extended service life and appropriate mechanical strength that are required by the design. Because the presence of a large number of large pores or voids, particularly when they are concentrated in a particular region, can have an impact on the mechanical strength and durability of concrete, reducing the quantity of such pores or voids can help to increase the strength of the hydrated cement paste that is used in this type of concrete. Because a crystalline phase's strength increases with decreasing grain size, the grain size of the materials used in the production of concrete also has an effect on the characteristics of the finished product. Extensive experimental work was carried out to investigate the impact that different parameters had on the results of mechanical, and durability tests carried out on Nano Silicaand Silica Fume when they were subjected to compression and the silica fume ranged from 0% ,1% ,2% to 3% and combination of nano silica and silica fume was considered in which sililca fume values were considered cconstant at 2% and nano silica varied from 0% ,0.5%, 1%, to 1.5%. By this procedure an increase in the strength of the concrete was found.
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References
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