Abstract
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.
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