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<doi>/ISEC.res.2017.222</doi>
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<article-title>A STUDY OF HEMPCRETE PROPERTIES USING<br/>
NATURAL HYDRAULIC LIME – MIX DESIGN,<br/>
MECHANICAL PROPERTIES, AND<br/>
MICROSTRUCTURE</article-title>
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<author>SAMO LUBEJ, SEBASTIAN TOPLAK, MARJAN LEP, and ANDREJ IVANI&#268;</author>

<aff>Faculty of Civil Engineering, Transportation Engineering and Architecture,<br/>
University of Maribor, Maribor, Slovenia</aff>

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<title>ABSTRACT</title>
<p>In the article, an analysis of tensile strength fiber hemp and hemp fiber linkage analysis
in the cement matrix is presented. The average tensile strength of the fibers of untreated
hemp amounts to 764 MPa and the calculated modulus of elasticity amounts to 30 GPa.
A test of pulling fibers from the cement matrix has shown that when increasing the
length linkage, the maximum pulling force increases while the clamping strength does
not significantly change. In the laboratory, a mixture of hemp concrete where a portion
of mineral aggregate was replaced with hemp hurd was prepared. Results of the
examination of the microstructure of hardened lime binder have shown that the
hardened NHL mixture is porous and vapor-permeable while the hardened HL mixture
is thick and compact. The goal was to create a prototype hemp concrete mixture that
can be used for production of prefabricated elements with tensile strength between 10
and 25 MPa.</p>
<p><italic>Keywords: </italic>Composites, Hemp fibers, Hemp concrete.</p>
</abstract>
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