Natural stones are exposed to sudden and slow-developing thermal cycles, affecting their physico-mechanical and surface properties. In this study, changes in the physico-mechanical properties of natural stones in response to sudden (thermal shock) and slow-developing (thermal aging) thermal cycles were investigated on natural stone samples with various compositions (magmatic, sedimentary, metamorphic). Both the thermal shock and thermal aging cycles were simulated by first heating the specimens to 105 °C for 18 h. In case of the thermal shock cycles, the heating phase was followed by placing the samples in purred water for 6 h. To simulate the thermal aging cycles, specimens were allowed to cool at room temperature (23 °C) for 6 h. At the end of the cycles, a selection of physico-mechanical properties was evaluated and compared with the initial values. Results indicate that thermal treatments have a significant negative effect on the strength of the natural stone samples. Regression models were developed to estimate uniaxial compressive strength, point load strength, Brazilian tensile strength from non-destructive test parameters (Schmidt hardness, P wave velocity, porosity) of natural and treated samples. Results show that there are strong correlations between mechanical properties and non-destructive test parameters (R² > 0.96, MAPE values between 2 and 5%).

天然石材会暴露在突然且缓慢发展的热循环中，从而影响其物理机械和表面特性。在这项研究中，对具有不同成分（岩浆、沉积、变质）的天然石材样品，研究了天然石材物理机械特性随突然（热冲击）和缓慢发展（热老化）热循环而发生的变化。热冲击和热老化循环都是通过首先将样品加热到 105 °C 18 小时来模拟的。在热冲击循环的情况下，加热阶段之后将样品放入纯净水中 6 小时。为了模拟热老化循环，样品在室温 (23 °C) 下冷却 6 小时。在循环结束时，对选定的物理机械特性进行了评估，并与初始值进行了比较。结果表明，热处理对天然石材样品的强度有显着的负面影响。开发了回归模型以根据天然和处理样品的非破坏性测试参数（施密特硬度、P 波速度、孔隙率）估算单轴抗压强度、点载荷强度、巴西拉伸强度。结果表明，机械性能与无损检测参数之间存在很强的相关性（来自天然样品和处理样品的无损测试参数（施密特硬度、P 波速度、孔隙率）的巴西拉伸强度。结果表明，机械性能与无损检测参数之间存在很强的相关性（来自天然样品和处理样品的无损测试参数（施密特硬度、P 波速度、孔隙率）的巴西拉伸强度。结果表明，机械性能与无损检测参数之间存在很强的相关性（R ²  > 0.96，MAPE 值在 2 和 5% 之间）。