Cement-treated base (CTB) has become the most popular cement-modified road-base material. This study theoretically connects understandings of CTB damage behaviour derived from laboratory and full-scale experiments using the continuum damage mechanics approach. Fatigue-life tests using four-point bending testing were performed on laboratory CTB specimens and compared to test data from full-scale fatigue testing conducted by the Australia Road Research Board. Damage evolution curves developed from both test environments were characterised and compared, resulting in three key findings: (1) damage evaluation through the normalisation technique can be reasonably used to overcome the inherently different conditions of the testing environment; (2) a significant distinction was observed in the final phase of the damage evolution curves; (3) damage evolution of field CTB can be reasonably predicted by the damage evolution of laboratory CTB specimens. Future research should investigate the effects of parent material gradation, testing method, and unforeseen factors to the damage characteristics of CTB.

水泥处理基料（CTB）已成为最受欢迎的水泥改性路基材料。这项研究从理论上联系了使用连续损伤力学方法从实验室和全面实验中获得的对CTB损伤行为的理解。在实验室CTB样品上进行了使用四点弯曲测试的疲劳寿命测试，并将其与澳大利亚道路研究委员会进行的全面疲劳测试的测试数据进行了比较。对两种测试环境下形成的损伤演化曲线进行了表征和比较，得出三个主要发现：（1）通过归一化技术进行的损伤评估可以合理地用来克服测试环境固有的不同条件；（2）在损伤演化曲线的最后阶段观察到显着差异；（3）现场CTB的损伤演化可以通过实验室CTB标本的损伤演化合理地预测。未来的研究应调查母体材料的等级，测试方法以及不可预见的因素对CTB损伤特性的影响。