Durable cement/cellulose nanofiber composites prepared by a facile approach

Jeong-A Oh; Mathias Aakyiir; Yue Liu; Aidong Qiu; Tahlia R Meola; Philip Forson; Sherif Araby; Yan Zhuge; Sang-Heon Lee; Jun Ma

doi:10.1016/j.cemconcomp.2021.104321

Durable cement/cellulose nanofiber composites prepared by a facile approach

Jeong-A Oh
, Mathias Aakyiir
, Yue Liu
, Aidong Qiu
, Tahlia R Meola
, Philip Forson
, Sherif Araby
, Yan Zhuge
, Sang-Heon Lee
, Jun Ma

Department of Mechanical and Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

51 Citations (Scopus)

Abstract

This study developed a facile methodology for preparation of nanoscale dispersion of cellulose nanofibers (CNFs). A suite of methodologies was proposed for the first time to gauge the dispersion quality of CNFs, which was crucial to the subsequent compounding with cement to prepare nanocomposites. Being compatible with cement through interfacial bonding between –COO ^- of CNFs and Ca ²⁺ of cement, CNFs improved the compressive strength of cement by 18% at 0.096 wt% and flexural strength by 21% at 0.480 wt%. Reinforcing mechanisms were explained in terms of the hydration, pore structure and morphologies of the nanocomposites. CNFs at 0.096 wt% significantly decreased the pore volume of cement from 72.66 mm ³/g to 51.39 mm ³/g and reduced the cement water absorption from 17.23% to 10.60%, which was attributed to the enhanced microstructural densification and pore-size refinement.

Original language	English
Article number	104321
Pages (from-to)	104321
Number of pages	1
Journal	Cement and Concrete Composites
Volume	125
DOIs	https://doi.org/10.1016/j.cemconcomp.2021.104321
Publication status	Published - Jan 2022

Funding

This work was supported by the Australian Research Council [grant number DP200101737]. The authors also gratefully acknowledge Zhencheng Yu, Sonia T. Sebastian and Dr. Nobuyuki Kawashima for technical support and advice in the experimental work.

Funders	Funder number
Australian Research Council	DP200101737

Keywords

Cellulose nanofibers
Cement nanocomposites
Durability
Nanoscale dispersion
Porosity
Reinforcement

ASJC Scopus subject areas

Building and Construction
General Materials Science

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10.1016/j.cemconcomp.2021.104321

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title = "Durable cement/cellulose nanofiber composites prepared by a facile approach",

abstract = "This study developed a facile methodology for preparation of nanoscale dispersion of cellulose nanofibers (CNFs). A suite of methodologies was proposed for the first time to gauge the dispersion quality of CNFs, which was crucial to the subsequent compounding with cement to prepare nanocomposites. Being compatible with cement through interfacial bonding between –COO - of CNFs and Ca 2+ of cement, CNFs improved the compressive strength of cement by 18\% at 0.096 wt\% and flexural strength by 21\% at 0.480 wt\%. Reinforcing mechanisms were explained in terms of the hydration, pore structure and morphologies of the nanocomposites. CNFs at 0.096 wt\% significantly decreased the pore volume of cement from 72.66 mm 3/g to 51.39 mm 3/g and reduced the cement water absorption from 17.23\% to 10.60\%, which was attributed to the enhanced microstructural densification and pore-size refinement.",

keywords = "Cellulose nanofibers, Cement nanocomposites, Durability, Nanoscale dispersion, Porosity, Reinforcement",

author = "Jeong-A Oh and Mathias Aakyiir and Yue Liu and Aidong Qiu and Meola, \{Tahlia R\} and Philip Forson and Sherif Araby and Yan Zhuge and Sang-Heon Lee and Jun Ma",

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AU - Oh, Jeong-A

AU - Aakyiir, Mathias

AU - Liu, Yue

AU - Qiu, Aidong

AU - Meola, Tahlia R

AU - Forson, Philip

AU - Araby, Sherif

AU - Zhuge, Yan

AU - Lee, Sang-Heon

AU - Ma, Jun

PY - 2022/1

Y1 - 2022/1

N2 - This study developed a facile methodology for preparation of nanoscale dispersion of cellulose nanofibers (CNFs). A suite of methodologies was proposed for the first time to gauge the dispersion quality of CNFs, which was crucial to the subsequent compounding with cement to prepare nanocomposites. Being compatible with cement through interfacial bonding between –COO - of CNFs and Ca 2+ of cement, CNFs improved the compressive strength of cement by 18% at 0.096 wt% and flexural strength by 21% at 0.480 wt%. Reinforcing mechanisms were explained in terms of the hydration, pore structure and morphologies of the nanocomposites. CNFs at 0.096 wt% significantly decreased the pore volume of cement from 72.66 mm 3/g to 51.39 mm 3/g and reduced the cement water absorption from 17.23% to 10.60%, which was attributed to the enhanced microstructural densification and pore-size refinement.

AB - This study developed a facile methodology for preparation of nanoscale dispersion of cellulose nanofibers (CNFs). A suite of methodologies was proposed for the first time to gauge the dispersion quality of CNFs, which was crucial to the subsequent compounding with cement to prepare nanocomposites. Being compatible with cement through interfacial bonding between –COO - of CNFs and Ca 2+ of cement, CNFs improved the compressive strength of cement by 18% at 0.096 wt% and flexural strength by 21% at 0.480 wt%. Reinforcing mechanisms were explained in terms of the hydration, pore structure and morphologies of the nanocomposites. CNFs at 0.096 wt% significantly decreased the pore volume of cement from 72.66 mm 3/g to 51.39 mm 3/g and reduced the cement water absorption from 17.23% to 10.60%, which was attributed to the enhanced microstructural densification and pore-size refinement.

KW - Cellulose nanofibers

KW - Cement nanocomposites

KW - Durability

KW - Nanoscale dispersion

KW - Porosity

KW - Reinforcement

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Durable cement/cellulose nanofiber composites prepared by a facile approach

Abstract

Funding

Keywords

ASJC Scopus subject areas

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