Bartoň Vojtěch, Dvořák Richard, Cikrle Petr, Šnédar Jaroslav
Institute of Building Testing, Faculty of Civil Engineering, Brno University of Technology, Veveří 331/95, 602 00 Brno, Czech Republic.
Institute of Physics, Faculty of Civil Engineering, Brno University of Technology, Veveří 331/95, 602 00 Brno, Czech Republic.
Materials (Basel). 2022 Aug 25;15(17):5882. doi: 10.3390/ma15175882.
Historical buildings and monuments are largely made of brickwork. These buildings form the historical and artistic character of cities, and how we look after them is a reflection of our society. When assessing ceramic products, great emphasis is placed on their mechanical properties, whilst their durability is often neglected. However, the durability or resistance to weathering of masonry elements is just as important as their mechanical properties. Therefore, this work deals with predicting the durability of solid-fired bricks before they are used when reconstructing monuments and historical buildings. Durability prediction is assessed by identifying defects in the material's internal structure. These faults may not be visible on the element's surface and are difficult to detect. For this purpose, non-destructive electroacoustic methods, such as the resonant pulse method or the ultrasonic pulse method, were used. Based on an analysis of the initial and residual mechanical properties after freezing cycles, four durability classes of solid-fired bricks were determined. This work aimed to find a way to predict the durability (lifetime) of an anonymous solid-fired brick, expressed in terms of the number of freeze cycles the brick would last, based on non-destructive measurements.
历史建筑和古迹大多由砖石结构建成。这些建筑构成了城市的历史和艺术特色，而我们对它们的保护方式反映了我们的社会。在评估陶瓷产品时，人们非常重视其机械性能，而其耐久性往往被忽视。然而，砖石构件的耐久性或耐风化性与其机械性能同样重要。因此，这项工作涉及在重建古迹和历史建筑之前预测实心烧制砖在使用前的耐久性。耐久性预测是通过识别材料内部结构中的缺陷来评估的。这些缺陷在构件表面可能不可见，且难以检测。为此，使用了无损电声方法，如共振脉冲法或超声脉冲法。基于对冻融循环后初始和残余机械性能的分析，确定了实心烧制砖的四个耐久性等级。这项工作旨在找到一种方法，基于无损测量来预测匿名实心烧制砖的耐久性（寿命），以砖能承受的冻融循环次数来表示。
