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Budownictwo i Inżynieria Środowiska

Budownictwo i Inżynieria Środowiska
2017.192, DOI: 10.7862/rb.2017.192

TESTING HEMP HURDS COMPOSITES WITH ALTERNATIVE BINDER

Nadezda STEVULOVA, Ivana SCHWARZOVA
Submitted by: Artur Szalacha

DOI: 10.7862/rb.2017.192

Abstract

Composites based on natural fibres as organic filler are studied for several years because traditional building materials such as concrete are increasingly being replaced by advanced composite materials (fibre reinforced cement). The current trend in the construction industry is the effort to achieve sustainable development using rapidly renewable material resources instead of limited raw materials as well as using alternative materials. The need for development of promising and environmentally friendly materials is related to the industrial interest in the use of natural plant fibres as reinforcement into lightweight composites. The attention is given to hemp fibres as a substitute for synthetic fibers in lightweight composites due to their unique mechanical, thermal insulation, acoustic and antiseptic properties. Optimizing the adhesion of hemp plant fibre to the inorganic matrix in the composite is related to the modification of hemp fibers and/or the appropriate option and treatment of binder. In this paper, the attention is given to the study properties of composite based on hemp hurds (the woody part of hemp plant) as filler and alternative binder (MgO-cement). The hemp as a building composite component is rapidly renewable, carbon-negative, non-toxic, mildew-resistant and pest-free. Cement based on MgO seems to be a suitable binding agent for composites based on hemp hurds. Experimental work is focused on the study of thermal treatment of natural raw magnesite material for its subsequent use as an alternative binder component for lightweight composites and variation of composite mixtures based on hemp hurds and alternative binder focused on the MgO and SiO2 component (silica sand and silica fume in variation). The evaluation of the physical and mechanical properties of hemp hurds composites with alternative binder is given. The results have shown that by incorporating hemp hurds into a magnesium oxide cement matrix it is possible to prepare materials with suitable thermal insulating properties usable in non-load-bearing structures.

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About this Article

TITLE:
TESTING HEMP HURDS COMPOSITES WITH ALTERNATIVE BINDER

AUTHORS:
Nadezda STEVULOVA (1)
Ivana SCHWARZOVA (2)

AUTHORS AFFILIATIONS:
(1) Technical University of Kosice
(2) Technical University of Kosice

SUBMITTED BY:
Artur Szalacha

JOURNAL:
Budownictwo i Inżynieria Środowiska
2017.192

KEY WORDS AND PHRASES:
alternative binder, hemp hurds, lightweight composites, thermal treatment, physico-mechanical properties

FULL TEXT:
http://doi.prz.edu.pl/pl/pdf/biis/934

DOI:
10.7862/rb.2017.192

URL:
http://dx.doi.org/10.7862/rb.2017.192

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