Influence of carbon nanotubes on the durability and permeability of foam concrete

The research object is foam concrete modified with carbon nanotubes (CNTs). The aim is to investigate how CNT incorporation and dispersion affect the material’s permeability and durability, addressing key limitations of conventional lightweight concrete. through adding a range of additives into the mixing process. Foam concrete is one of the types of light concrete that is prepared by mixing sand, cement, water and foam. In general, one of the ways to improve the mechanical properties of concrete is to add a variety of additives to the mixing plan. Method. The mechanical properties are considered for the investigation by adding carbon nanotubes and considering the latest advancements in the field of nanomaterials in the manufacturing of concrete additives and their compatibility with foam and cement types that are accessible in the market. It is hoped that conducting this research will be a start for the next steps in the field of optimizing the production of fiber concrete with high elastic properties. In this project, by using different percentages of carbon nanotubes in the design, favorable results can be obtained. Results. These results show that with the increase in the percentage of carbon nanotubes in foam concrete, the penetration of chlorine ions has decreased by 9.7% compared to the control sample, the depth of water penetration has decreased by 4.8% compared to the control sample, and the water absorption has decreased by 5.5% compared to the control sample.