Efficiency of application of complex nanomodifying additives based on zeolites in building materials

The paper considers the possibility of using integrated multifunctional additives based on carbon nanotubes and zeolites (natural and synthetic) in construction materials. The nanotubes were produced by catalytic chemical vapor deposition. The streamlined modification of the zeolite structure was performed by impregnating initial materials with a nanotubes-supported catalyst. The present experimental research focused on studying the effect of the synthesized nanomodifying additive on the physicomechanical properties of a composite construction material. Based on the obtained data, it was assumed that when entering the concrete structure, zeolite acts not only as mineral additive but also as nanotubes carrier under the chosen nanomodification conditions for the construction material, thereby allowing for uniform distribution of carbon nanoparticles in the composite matrix; on the other hand, the adsorption properties of zeolite can be reinforced by the presence of carbon in the structure. Structures of nanomodifying zeolites and obtained building composite were evaluated by scanning electron microscopy (SEM). Electron micrographs of the objects makes it possible to explain the processes of formation of the concrete structure, nanomodified complex multifunctional additive based on synthetic and natural zeolites and carbon nanomaterial.