Investigating the mechanical properties and durability indices of concrete containing Fe3O4/SiO2/GO and GO nanoparticles

Abstract

Recent research in the construction industry justifi es the partial replacement of cement by nanomaterials. Graphene oxide na-nocomposite is a material that has been recently proposed as a suitable alternative for part of cement in concrete. However, there is no research on the addition of these synthetic compounds to concrete, and little is known about the effect of these materials on the mechanical and durability properties of concrete. Therefore, in this laboratory study, the synthesis of Fe3O4/SiO2/GO and GO nanoparticles was performed and confi rmed with FT-IR, SEM, TEM analyses. These nanoparticles partially replaced cement by 1, 2, 3, and 4 % by mass of the cement, and their effect on mechanical and durability properties of concrete at the ages of 7, 28, and 90-day, were investigated. The results suggest that mixtures in which 2% Fe3O4/ SiO2/GO and 3% GO substituted cement yielded the best results in the mechanical properties tests. Concrete containing Fe3O4/SiO2/GO nanoparticles enhanced compressive strength by 14% and splitting tensile strength by 12% after 28-days of curing. Also, concrete containing 2% Fe3O4/SiO2/GO, had the highest re-sistance to an acidic environment, the lowest permeability, and the highest transient pulse velocity in the ultrasonic test, compared to the specimen containing GO nanoparticles and the control sample.

Effects of FeNi3/SiO2 /GO nanoparticles on the mechanical and durability properties of concrete

“…Nanocząstki wprowadzone do betonu zmniejszają jego gęstość oraz rozmiar porów. Właściwości można w dużym stopniu poprawić przez reakcję między nanocząstkami a produktami hydratacji, zgodnie z (6)(7)(8)(9). Dodanie niewielkiej ilości nanocząstek do betonu znacznie zwiększa jego wytrzymałość i trwałość.…”

“…Nanoparticles reduce the density and pore size of concrete when incorporated into the material. A great deal of performance can be improved by the reaction between nanoparticles and hydrate products, according to (6)(7)(8)(9).…”

Effects of FeNi3 Nanoparticles and Coal Slag on Mechanical and Durability Properties of Concrete against Acidic Environments

“…Nanoparticles can increase the density of particles in concrete, thereby increasing the density of nanostructures in concrete and improving its mechanical properties. Using nanoparticles to strengthen concrete has been proven [15,16]. In addition to serving as a filler in concrete microstructures, concluded that nanosilica acts as an activator in pozzolanic reactions [17].…”