Viel Marie, Collet Florence, Prétot Sylvie, Lanos Christophe
Laboratoire Génie Civil et Génie Mécanique, Université de Rennes, BP 90422 Rennes, France.
Institut de recherche en Génie Civil et en Génie Mécanique, Université de Nantes, BP 92208 Nantes, France.
Materials (Basel). 2019 Apr 12;12(8):1199. doi: 10.3390/ma12081199.
In order to meet the requirement of sustainable development, building materials are increasingly environmentally friendly. They can be partially or fully bio-based or recycled. This paper looks at the development of fully bio-based composites where agro-resources are valued as bio-based aggregates (hemp) and as binding materials (wheat). In a previous work, a feasibility study simultaneously investigated the processing and ratio of wheat straw required to ensure a gluing effect. In this paper, three kinds of hemp-straw composites are selected and compared with a hemp-polysaccharides composite. The gluing effect is analyzed chemically and via SEM. The developed composites were characterized multi-physically. They showed sufficiently high mechanical properties to be used as insulating materials. Furthermore, they showed good thermal performances with a low thermal conductivity (67.9-69.0 mW/(m · K) at 23 ° C, dry).
为满足可持续发展的要求，建筑材料越来越环保。它们可以部分或完全基于生物或可回收利用。本文探讨了完全基于生物的复合材料的发展情况，其中农业资源被视为生物基集料（大麻）和粘结材料（小麦）。在之前的一项工作中，一项可行性研究同时调查了确保胶合效果所需的麦秸加工工艺和比例。本文选择了三种麻秸复合材料，并与一种麻-多糖复合材料进行比较。通过化学分析和扫描电子显微镜对胶合效果进行了分析。对所开发的复合材料进行了多物理特性表征。它们表现出足够高的机械性能，可用作绝缘材料。此外，它们还具有良好的热性能，在23℃干燥条件下热导率较低（67.9 - 69.0 mW/(m·K)）。
