Improved Interfacial Bonding Strength and Reliability of Functionalized Graphene Oxide for Cement Reinforcement Applications
Journal article, 2020

Poor bonding strength between nanomaterials and cement composites inevitably lead to the failure of reinforcement. Herein, a novel functionalization method for the fabrication of functionalized graphene oxide (FGO), which is capable of forming highly reliable covalent bonds with cement hydration products, and therefore, suitable for use as an efficient reinforcing agent for cement composites, is discussed. The bonding strength between cement and aggregates was improved more than 21 times with the reinforcement of FGO. The fabricated FGO also demonstrated many important features, including high reliability in cement pastes, good dispersibility, and efficient structural refinement of cement hydration products. With the incorporation of FGO, cement mortar samples demonstrated up to 40 % increased early and ultimate strength. Such results make the fast demolding and manufacture of light constructions become highly possible, and show strong advantages on improving productivity, saving cost, and reducing CO2 emissions in practical applications.

interfaces

graphene

cement

nanomaterials

surface functionalization

Author

Nan Wang

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

SHT Smart High-Tech

Shuping Wang

Chongqing University

Luping Tang

Chalmers, Architecture and Civil Engineering, Building Technology

L. Ye

SHT Smart High-Tech

Björn Cullbrand

Centrum Pile AB

Abdelhafid Zehri

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

Behabitu Ergette Tebikachew

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Kasper Moth-Poulsen Group

Johan Liu

Shanghai University

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

Chemistry - A European Journal

0947-6539 (ISSN) 1521-3765 (eISSN)

Vol. 26 29 6561-6568

Nanotechnology Enhanced Sintered Steel Processing

Swedish Foundation for Strategic Research (SSF), 2016-01-01 -- 2020-12-31.

Enhanced cement based coating materials for surface protection/repair applications using 2-dimentional materials

Formas, 2018-01-01 -- 2020-12-31.

Areas of Advance

Production

Subject Categories

Biomaterials Science

Medical Materials

Composite Science and Engineering

DOI

10.1002/chem.201904625

PubMed

31821604

More information

Latest update

11/10/2020