Mustafaraj Enea, Luga Erion, Corradi Marco, Borri Antonio, Muceku Ylber, Zharkalli Aleksandra
Department of Civil Engineering, EPOKA University, 1039 Tirana, Albania.
Department of Mechanical & Construction Engineering, Northumbria University, Newcastle upon Tyne NE1 8ST, UK.
Materials (Basel). 2021 Feb 27;14(5):1127. doi: 10.3390/ma14051127.
In addition to reinforced concrete and steel buildings, a large part of the existing building stock in Europe is made of stone masonry. Prediction of the structural behavior requires the development of a systematic material characterization of the mechanical properties and structural details (units, arrangement, bonding, inter-connection). This study aims to analyze the mechanical and physical behavior of building stones in the historical city of Gjirokastër, Albania, known also as the Stone City. A thorough investigation of the regional stone quarries was performed, and the collected samples were cut into regular prismatic specimens for further analysis. The experimental campaign consisted of the determination of flexural strength and compressive strength, water absorption, porosity, specific gravity as well as structural analysis of the masonry material, using the MQI (Masonry Quality Index) method. The test results showed that there is a large scattering in the values of the mechanical and physical stone properties such as compressive strength varying from 20 to 115 MPa and flexural strength from 8 to 25 MPa. However, the analysis of the masonry material revealed a satisfactory structural performance, based on a frequent, systematic respect of the good construction practices (i.e., the rules of the art) in Gjirokastër.
除了钢筋混凝土建筑和钢结构建筑外,欧洲现有建筑存量的很大一部分是由砖石砌筑而成。对结构性能的预测需要对机械性能和结构细节(单元、排列、粘结、互连)进行系统的材料特性描述。本研究旨在分析阿尔巴尼亚吉诺卡斯特历史名城(也被称为石头城)中建筑石材的力学和物理性能。对当地的采石场进行了全面调查,并将采集的样本切割成规则的棱柱形试件以供进一步分析。实验项目包括测定弯曲强度、抗压强度、吸水率、孔隙率、比重,以及使用砌体质量指数(MQI)方法对砌体材料进行结构分析。测试结果表明,石材的力学和物理性能值存在很大差异,例如抗压强度在20至115兆帕之间变化,弯曲强度在8至25兆帕之间变化。然而,对砌体材料的分析表明,基于吉诺卡斯特对良好施工规范(即工艺规则)的频繁、系统遵循,其结构性能令人满意。