Properties Evolution of Some Hydraulic Mortars Incorporating Graphene Oxides

Abstract

In this experimental study, the mechanical and adhesion properties of several hydraulic lime mortars incorporating graphene oxide (GO)-based nanomaterials were evaluated. Four different composite mortar samples were prepared by adding different percentages of GO-based powders (functionalized), i.e., 1 wt.% GO, 5 wt.% GO, 5wt.% GO-Ag-GO-Fly ash, and 5 wt.% GO-ZnO-GO-TiO2 into the reference mortar sample. The mortar specimens were analyzed through mechanical tests, FT-IR, and SEM. The behavior of selected mortars exposed to chemical attacks was also investigated. The results indicate that the addition of the functionalized GO-based powders leads to a significant improvement in the mortar’s adhesion to the brick substrate (up to 80%) compared to the reference sample, especially in the case of the hydraulic lime mortar incorporating the mixture of GO-Ag and GO-Fly ash, which also showed good resistance to chemical attacks.

Present Status and Perspectives of Graphene and Graphene‐related Materials in Cultural Heritage

“…In these studies on the influence of GO on the performance of natural hydraulic mortars, different concentrations of GO in different physical forms (aqueous dispersions or powder) have been tested. [ 159,160 ] However, the results are preliminary, and it is difficult to draw a conclusive remark. In lime‐pozzolan‐cement pastes, Alexopoulos et al.…”

Transforming Conventional Construction Binders and Grouts into High-Performance Nanocarbon Binders and Grouts for Today’s Constructions

“…Cement-based materials that are used in construction possess good compression properties, but they are generally weak in tension and less ductile than other metallic materials. Nanomaterials can be added to cementitious composites to improve their performance [19][20][21][22]. Therefore, the current study examined the impact of blending nanocarbon on a number of properties of grout containing different types of binder.…”