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dc.contributor.authorda Costa Santos, Ana Caroline
dc.contributor.authorArchbold, Paul
dc.identifier.citationda Costa Santos, A. C., Archbold, P. (2022). Suitability of surface-treated flax and hemp fibers for concrete reinforcement. Fibers. 10, 101. Reinforcement. Fibers 2022, 10, 101. 10.3390/fib10110101en_US
dc.description.abstractThe use of vegetable fibres as a sustainable alternative to non-natural sources of fibres applied for concrete reinforcement has been studied for over three decades. The main issues about plant-based fibres pointed out by other authors are the variability in their properties and concerns about potential high biodegradability in the alkaline pH of the concrete matrix. Aiming to minimise the variability of flax and hemp fibres, this research compares a range of chemical surface treatments, analysing their effects on the behaviour of the fibres and the effects of their addition to concrete. Corroborating what has been found by other authors, the treatment using NaOH 10% for 24 h was able to enhance the properties of hemp fibre-reinforced concrete and reduce the degradability in alkaline solution. For flax fibres, a novel alternative stood out: treatment using 1% of stearic acid in ethanol for 4 h. Treatment using this solution increased the tensile by 101%, causing a minor effect on the elastic modulus. Concrete mixes reinforced with the treated flax fibres presented reduced thermal conductivity and elastic modulus and increased residual tensile strength and fracture energy.en_US
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 United States*
dc.subjectProduction of vegetable fibre reinforced concete (FRC)en_US
dc.subjectExtraction of flax and hemp fibresen_US
dc.subjectSurface treatment of vegetable fibresen_US
dc.subjectDegradability of plant fibres into the alkaline matrixen_US
dc.subjectMechanical properties of FRCen_US
dc.subjectFracture energy of natural fibre reinforced concreteen_US
dc.titleSuitability of surface-treated flax and hemp fibers for concrete reinforcementen_US
dc.contributor.affiliationTechnological University of the Shannon: Midlands Midwesten_US
dc.contributor.sponsorThis work was funded by the Government of Ireland Scholarship (Grant number P221-279) and the Technological University of the Shannon: Midlands President Doctoral Scholarship fund and HEA [Higher Education Authority] and D/FHERIS [The Department of Further and Higher Education, Research, Innovation and Science].en_US
dc.subject.departmentDepartment of Civil Engineering and Trades: TUS Midlandsen_US

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Attribution-NonCommercial-NoDerivs 3.0 United States
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 United States