Improved Interfacial Bonding Strength and Reliability of Functionalized Graphene Oxide for Cement Reinforcement Applications
Artikel i vetenskaplig tidskrift, 2019

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.

nanomaterials

surface functionalization

graphene

interfaces

cement

Författare

Nan Wang

Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system

SHT Smart High-Tech

Shuping Wang

Chongqing University

Luping Tang

Chalmers, Arkitektur och samhällsbyggnadsteknik, Byggnadsteknologi

L. Ye

SHT Smart High-Tech

Björn Cullbrand

Centrum Pile AB

Abdelhafid Zehri

Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system

Behabitu Ergette Tebikachew

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Kasper Moth-Poulsen Group

Johan Liu

Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system

Shanghai University

Chemistry - A European Journal

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

Vol. In Press

Nanoteknikstödd tillverkning av högpresterande sinterstål

Stiftelsen för Strategisk forskning (SSF), 2016-01-01 -- 2020-12-31.

Förbättrade cementbaserad ytskydd/reparation materialer med utnyttjande av två-dimensionella material

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

Styrkeområden

Produktion

Ämneskategorier

Biomaterialvetenskap

Medicinska material och protesteknik

Kompositmaterial och -teknik

DOI

10.1002/chem.201904625

PubMed

31821604

Mer information

Senast uppdaterat

2020-02-10