Monaco Michelina, Aurilio Marianna, Tafuro Anna, Guadagnuolo Mariateresa
Department of Engineering, University of Sannio, Piazza Roma 21, 82100 Benevento, Italy.
Department of Architecture and Industrial Design, University of Campania Luigi Vanvitelli, Abbazia di San Lorenzo ad Septimum, Via S. Lorenzo, 81031 Aversa, Italy.
Materials (Basel). 2021 Jan 27;14(3):598. doi: 10.3390/ma14030598.
A large part of the world's architectural heritage is composed of masonry buildings located in seismic areas, and its vulnerability has been shown by the damage caused by the last earthquakes. Meeting the safety demands of cultural heritage buildings according to the performance-based seismic codes requires a deep knowledge of the mechanical properties of material components. Traditional mortars are among these. However, significant samples of structural mortars cannot be taken from existing masonry walls to perform mechanical tests, but tests can, alternatively, be conducted on samples realized according to traditional instructions for composition. Based on a historical study of mix proportions, this paper presents the results of a mechanical test campaign of traditional mortars. The samples were obtained combining lime and pozzolan according to the proportions derived from ancient treatises. The laboratory tests were performed taking into account three different types of limes, and a discussion involving the results presented in the literature is provided. Besides the contribution to fulfilling the lack of knowledge about the mechanical properties of traditional lime mortars, the test results are good references for on-site preparation of mortars for use in restoration. There is a focus on natural pozzolanic lime mortars, widely used in the Neapolitan area and, in general, in the whole Italian territory.
世界上很大一部分建筑遗产是位于地震区的砖石建筑，而最近的地震所造成的破坏已表明了其脆弱性。根据基于性能的抗震规范来满足文化遗产建筑的安全需求，需要深入了解材料构件的力学性能。传统灰浆就是其中之一。然而，无法从现有的砖石墙体中获取大量结构灰浆样本以进行力学试验，但可以对按照传统配方说明制作的样本进行试验。基于对配合比的历史研究，本文展示了传统灰浆力学试验活动的结果。样本是根据古代论著得出的比例将石灰和火山灰混合而成的。进行实验室试验时考虑了三种不同类型的石灰，并对文献中呈现的结果进行了讨论。除了有助于填补对传统石灰灰浆力学性能认识的空白外，试验结果还可为修复中现场制备灰浆提供很好的参考。重点关注天然火山灰质石灰灰浆，其在那不勒斯地区乃至整个意大利领土都被广泛使用。
