<abstract xmlns="http://www.w3.org/1999/xhtml"><p> The aim of this article is to study the behavior of prepared biocomposites based on hemp hurds as a filling agent in composite system. In addition to the filler and water, an alternative binder, called MgO-cement was used. For this objective were prepared three types of samples; samples based on untreated hemp hurds as a referential material and samples based on chemically (with NaOH solution) and physically (by ultrasonic procedure) treated hemp hurds. The thermal stress effect on bulk density changes of hemp hurds composites was monitored. Gradual increase in temperature led to composites density reduction of 30-40 %. This process is connected with mass loss of the adsorbed moisture and physically bound water and also with degradation of organic compounds present in hemp hurds aggregates such as pectin, hemicelluloses and cellulose. Therefore the changes in the chemical composition of treated hemp hurds in comparison to original sample and its thermal decomposition were also studied.</p></abstract>

The aim of this article is to study the behavior of prepared biocomposites based on hemp hurds as a filling agent in composite system. In addition to the filler and water, an alternative binder, called MgO-cement was used. For this objective were prepared three types of samples; samples based on untreated hemp hurds as a referential material and samples based on chemically (with NaOH solution) and physically (by ultrasonic procedure) treated hemp hurds. The thermal stress effect on bulk density changes of hemp hurds composites was monitored. Gradual increase in temperature led to composites density reduction of 30-40 %. This process is connected with mass loss of the adsorbed moisture and physically bound water and also with degradation of organic compounds present in hemp hurds aggregates such as pectin, hemicelluloses and cellulose. Therefore the changes in the chemical composition of treated hemp hurds in comparison to original sample and its thermal decomposition were also studied.

Thermal Stress Effect on Density Changes of Hemp Hurds Composites

Slovakia Civil Engineering Faculty, Institute of Environmental Engineering

Selected Scientific Papers - Journal of Civil Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Thermal Stress Effect on Density Changes of Hemp Hurds Composites"}

The aim of this article is to study the behavior of prepared biocomposites based on hemp hurds as a filling agent in composite system. In addition to the...

Thermal Stress Effect on Density Changes of Hemp Hurds Composites

Pubblicato online: 20 gen 2017

Pagine: 67 - 76

DOI: https://doi.org/10.1515/sspjce-2016-0019

Parole chiave
hemp hurds composites, lignocellulosic aggregates treatment, thermal stress

© 2017 Ivana Schwarzova et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Thermal Stress Effect on Density Changes of Hemp Hurds Composites

Pubblicato online: 20 gen 2017

Pagine: 67 - 76

DOI: https://doi.org/10.1515/sspjce-2016-0019

Parole chiavehemp hurds composites, lignocellulosic aggregates treatment, thermal stress

© 2017 Ivana Schwarzova et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Parole chiave
hemp hurds composites, lignocellulosic aggregates treatment, thermal stress