Please use this identifier to cite or link to this item: https://hdl.handle.net/1822/58544

TitleA facile approach of developing micro crystalline cellulose reinforced cementitious composites with improved microstructure and mechanical performance
Author(s)Silvia, Livia
Parveen, Shama
FIlho, Aloysio
Zottis, Amanda
Rana, Sohel
Vanderlei, Romel
Fangueiro, Raúl
KeywordsMicro Crystalline Cellulose Dispersion
Cementitious Composites
Mechanical Performance
Microstructure
Mercury Intrusion Porosimetry
Issue dateOct-2018
PublisherElsevier
JournalPowder Technology
CitationSilva, L., Parveen, S., et. al. (2018). A facile approach of developing micro crystalline cellulose reinforced cementitious composites with improved microstructure and mechanical performance. Powder Technology, 338, 654-663
Abstract(s)In the present study, microcrystalline cellulose (MCC) reinforced cementitious composites have been developed using a short and less energy intensive physical dispersion technique. MCC–cement mortar specimens were prepared through addition of aqueous MCC suspensions to the cement/sand mixture. Aqueous MCC suspensions (0.4%, 0.8%, 1.2%, 1.6% and 2% MCC, by weight) were prepared through magnetic stirring of pre-soaked MCC powder for only 45 min. The flow behaviour of freshly prepared MCC-mortar paste as well as bulk density, mechanical performance, microstructure, porosity, water uptake and hydration products of developed cementitious composites were characterized. It was noted that with the increase of MCC content, the flow of mortar paste decreased significantly. Maximum improvements of 20.5% in flexural strength, 19.8% in compressive strength, 100% in flexural modulus and 27.2% in fracture energy were achieved after 28 days of hydration. Mechanical performance was found to be better at lower MCC concentrations and at early hydration days. The addition of MCC significantly reduced the pore size of cementitious matrix, leading to increased dry bulk density and reduced water uptake as compared to the plain mortar specimens.
TypeArticle
DescriptionAccepted manuscript
URIhttps://hdl.handle.net/1822/58544
DOI10.1016/j.powtec.2018.07.076
ISSN0032-5910
e-ISSN1873-328X
Publisher versionhttps://www.sciencedirect.com/science/article/pii/S0032591018305746
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:DET/2C2T - Artigos em revistas internacionais com arbitragem científica


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