Investigating the Effect of Additives and Nanomaterials on the Physical Properties of Self-Compacting Concrete

Due to the use of concrete structures in climatic conditions, the problem of damage to these types of structures and, as a result, their repair and maintenance is one of the main issues of experts. Nanop articles have shown unique physical and chemical properties compared to other materials. Self-Compacting Concrete (SCC) is a new technology in world construction. It fills the form without external and internal vibrators and only uses the force of weight to maintain its uniformity simultaneously. Also, in the advanced industry, nanotechnology has created tremendous changes in the concrete industry, and with the production of nanomaterials, significant changes are seen in increasing the strength and durability of concrete. This research has tried to investigate the effect of adding nanomaterials on the properties of concrete while achieving specific mixing plans for making SCC. These tests were performed on the obtained mixing designs, and the samples were examined at ages 7, 28, 90, and 180. The results showed that adding these materials increased compressive and tensile strength. Also, it was observed in other studies that with the increase of nanomaterials, water absorption by concrete decreased a lot, and it was also observed in the study of electrical resistance that these nanomaterials played a significant role in increasing the electrical resistance of concrete. The increase in electrical resistance and, as a result, the decrease in conductivity prevents the corrosion and loss of round rods and other metals used in concrete.