Mechanical properties and self-sensing ability of graphene-mortar compositions with different water content for 3D printing applications

There is an increasing ongoing research on concrete compositions with enhanced properties such as self sensing given by the use of carbon nanomaterials. Carbon nanotubes-cement composites have been studied for over a decade to produce smart materials, interesting results. However, since first synthetized in 2004, Graphene rapidly growing popularity due similar conductive properties, high stiffness and strength, lower environmental impact ease production prices. More recent studies tried incorporate this material into positive On other hand, construction industry moving towards more automated processes new technologies 3D printing are gaining popularity. there little effects nanomaterials printable compositions. In paper, nanoplatelets (GnPs) mechanical conductivity mortar investigated. Five different water content graphene were prepared create cast printed samples dimensions 40x40x160 mm3 that tested evaluate strength resistivity change between unloaded loaded failure conditions. A linear regression model using Matlab was created overview depending water-cement ratio (w/c) nanoplatelet (GnP). The results showed samples, GnPs improve compressive ability material, while has detrimental effect depends heavily layers direction. Future should concentrate interlayer adhesion additives necessary printability GnP-mortar