Parcesepe Eliana, De Masi Rosa Francesca, Lima Carmine, Mauro Gerardo Maria, Pecce Maria Rosaria, Maddaloni Giuseppe
Department of Engineering, University of Sannio, Piazza Roma, 21, 82100 Benevento, Italy.
ITEMS SRL, Piazza Guerrazzi, 1, 82100 Benevento, Italy.
Materials (Basel). 2021 Feb 12;14(4):882. doi: 10.3390/ma14040882.
The use of renewable and natural materials characterized by the low environmental impact is nowadays a key issue for the sustainable development of the construction industry. For this reason, the interest for natural fibers, to be used as reinforcement in composites as an alternative to other fibers, is continuously growing. In this paper, the use of hemp for reinforcing lime mortar used as plaster is considered with a multidisciplinary approach, taking into consideration the structural and thermal performance. Natural fibers have several advantages compared to industrial ones, such as low cost, low environmental impact, biodegradability, renewable nature. Moreover, these can show remarkable mechanical performance in relation to specific weight, and sometimes, as in the case of hemp fibers, these can improve the thermal insulation capacity of the plaster. However, the experimental results on the mechanical features are still lacking, especially to assess their durability, and the variability of thermal parameters with the mechanical characteristics. Therefore, this paper proposes an experimental program, developed at Laboratory of Materials and Structures (LAMAS) of the University of Sannio (Italy), aimed at investigating the main mechanical properties (compression strength, flexural strength) of lime mortar reinforced by hemp fibers and subjected to various environmental exposures and aging processes. The characterization is completed with the measurement for the produced samples of the thermal conductivity by means of the standardized guarded hot plate technique.
使用具有低环境影响特征的可再生和天然材料如今是建筑业可持续发展的关键问题。因此，将天然纤维用作复合材料中的增强材料以替代其他纤维的兴趣正在不断增长。本文采用多学科方法考虑了将大麻用于增强用作灰泥的石灰砂浆的情况，并考虑了其结构和热性能。与工业纤维相比，天然纤维具有多种优势，例如成本低、环境影响小、可生物降解、可再生。此外，就比重而言，这些纤维可以表现出卓越的机械性能，而且有时，如大麻纤维的情况，这些纤维可以提高灰泥的隔热能力。然而，关于机械特性的实验结果仍然缺乏，特别是评估其耐久性以及热参数随机械特性的变化情况。因此，本文提出了一个由意大利桑尼奥大学材料与结构实验室（LAMAS）开展的实验计划，旨在研究大麻纤维增强石灰砂浆在各种环境暴露和老化过程下的主要机械性能（抗压强度、抗弯强度）。通过标准化的防护热板技术对所制备样品的热导率进行测量来完成表征。
