Enhancing Cementitious Composites with Functionalized Graphene Oxide-Based Materials: Surface Chemistry and...

Area of Science:

• Materials Science
• Civil Engineering
• Nanotechnology

Background:

• Graphene oxide-based materials (GOBMs) are explored as nano-reinforcements in cementitious composites.
• Oxygen-containing functional groups on GOBMs are vital for improving cement microstructure.
• Current understanding of GOBM surface chemistry and enhancement mechanisms in cement is limited.

Purpose of the Study:

• To review the reactions and mechanisms of functionalized GOBMs as additives in cement composites.
• To explore various GOBMs, including graphene oxide (GO), hydroxylated graphene (HO-G), edge-carboxylated graphene (ECG), edge-oxidized graphene oxide (EOGO), reduced graphene oxide (rGO), and GO/silane composites.
• To elucidate the role of oxygen functional groups and their interactions with cement microstructure.

Main Methods:

• Literature review of functionalized GOBMs in cementitious composites.
• Analysis of surface chemistry of various GOBMs.
• Discussion of interactions between GOBMs and cement microstructure.

Main Results:

• Functionalized GOBMs, with their oxygen groups, show potential for enhancing cementitious composites.
• Different GOBMs exhibit varied interactions with cement, influencing microstructure.
• Understanding surface chemistry is crucial for optimizing GOBM performance.

Conclusions:

• GOBMs offer significant potential as nano-reinforcements in cementitious composites.
• Further research into GOBM surface chemistry and reaction mechanisms is needed.
• Effective functionalization strategies can lead to high-performance cementitious materials.