Uniaxial compressive strength (UCS), which is one of the most important engineering properties of natural building blocks, exhibits a decrease at various rates under the effect of freeze–thaw (FT) cycles. In this study, practical estimation of UCS loss of 21 groups of carbonate building stones exposed to 4, 7, 10, 14, 20, 28, 35, 56, 70 and 84 FT cycles is aimed by proposed estimation models. In all models, the Leeb hardness (HL_D), which is practically determined by a dynamic surface hardness test method, was used as major input parameter. Other basic stone properties and number of FT cycles were also used as additional input parameters in developed models. The test results indicated that HL_D and UCS values decreased up to 13 and 40%, respectively, at the end of 84 FT cycles. Proposed equations are reliable and beneficial in estimation of deteriorated UCS values of carbonate building stones in practical engineering applications and scientific studies.

单轴抗压强度（UCS）是天然建筑材料最重要的工程性能之一，在冻融（FT）循环的影响下表现出不同程度的下降。在本研究中，通过提出的估计模型对暴露于 4、7、10、14、20、28、35、56、70 和 84 次 FT 循环的 21 组碳酸盐建筑石块的 UCS 损失进行实际估计。在所有模型中，里氏硬度 (HL _D )（实际上是通过动态表面硬度测试方法确定的）被用作主要输入参数。其他基本石材特性和 FT 循环次数也被用作开发模型中的附加输入参数。测试结果表明HL _D在 84 个 FT 循环结束时，UCS 和 UCS 值分别下降了 13% 和 40%。所提出的方程对于实际工程应用和科学研究中碳酸盐建筑石材劣化UCS值的估计是可靠且有益的。