Improved Interfacial Bonding Strength and Reliability of Functionalized Graphene Oxide for Cement Reinforcement Applications
Artikel i vetenskaplig tidskrift, 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
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
Shanghai University
Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system
Chemistry - A European Journal
0947-6539 (ISSN) 1521-3765 (eISSN)
Vol. 26 29 6561-6568Nanoteknikstödd 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