The effect of nanosilica, types of fibers and other additives on the permeability of rolled compacted concrete

Document Type : Research Paper

Author

Professor, Civil Engineering Department, University of Mohaghegh Ardabil

Abstract

This research has investigated the effect of adding nano-silica, steel, glass, polypropylene, micro-silica and Blast iron slag on the mechanical behavior and durability of rolled compacted concrete. The samples were made with different ratios of nanoparticles, types of fibers and their effects on permeability and compressive strength of concrete were evaluated. The results showed that nanosilica reduces the permeability of concrete by improving the microstructure and reducing calcium hydroxide crystals. Also, fibers improve the permeability of concrete by reducing cracks and breaking the continuity of pore. The combination of these additives leads to a significant improvement in the mechanical properties and durability of rolled concrete and can be used in the design of more optimal concrete mixes. The results of this research emphasize the positive effect of nanoparticles and types of fibers in increasing the useful life and performance of concrete. In the investigation of single-component mixtures containing nanosilica and fibers, we see that the performance of concrete against permeability with the combination of these materials works better than the single-component state.

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References

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