This paper presents a validation process of the developed multi-scale modelling scheme on mortar composites. Special attention was paid to make the material structure of real and virtual mortar specimens comparable at the meso-scale. The input mechanical parameters of cement paste (both bulk cement paste and interfacial transition zone) at the meso-scale were derived from results of micromechanical modelling through a volume averaging approach. Two constitutive relations for local elements were assumed and tested. By comparing with the experiments, the model using linear-elastic constitutive relation can reproduce the experimental load-displacement response satisfactorily in terms of the elastic stage and peak load. More realistic load-displacement curve in the non-elastic stage can be simulated by considering the softening of cement paste using a step-wise approach. More importantly, the proposed multi-scale modelling scheme is validated by the experimental measurements. It offers the opportunity for the meso-scale model to become fully predictive.

本文介绍了已开发的砂浆复合材料多尺度建模方案的验证过程。要特别注意使真砂浆和虚拟砂浆标本的材料结构在中观尺度上具有可比性。通过体积平均方法从微机械建模的结果中得出中尺度水泥浆的输入力学参数（块状水泥浆和界面过渡区）。假设并测试了两个局部元素的本构关系。通过与实验的比较，使用线弹性本构关系的模型可以在弹性阶段和峰值载荷方面令人满意地重现实验载荷-位移响应。在非弹性阶段，可以通过考虑使用逐步方法考虑的水泥浆软化来模拟更实际的载荷-位移曲线。更重要的是，所提出的多尺度建模方案已通过实验测量得到了验证。它为中尺度模型提供了完全预测的机会。