A micro-mechanical scheme has been coupled to a hydration model in [1] so as to investigate the instantaneous mechanical properties of a concrete. That scheme is extended to aging linear viscoelasticity so as to estimate the basic creep of concrete. The compliances of the hydrate phases are set according to existing nanoindentation tests. Then, aging is induced by the progressive dissolution of the unhydrated particles and the precipitation of hydrates at the expense of the capillary porosity. Eventually, these new estimates are extensively compared to 380 published experimental results of basic creep tests gathered in the NU database, thus showing that the method is operational, versatile and reasonably accurate. Finally, accounting for the Young modulus at the time of loading by scaling the estimated strains proved a justified and efficient correction.

中文翻译：

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使用综合实验数据库对混凝土老化基本徐变进行精细的多尺度估计

微机械方案已与 [1] 中的水化模型相结合，以研究混凝土的瞬时机械性能。该方案扩展到老化线性粘弹性，以估计混凝土的基本蠕变。根据现有的纳米压痕测试设置水合物相的顺应性。然后，老化是由未水化颗粒的逐渐溶解和水合物的沉淀引起的，以牺牲毛细管孔隙率为代价。最终，将这些新的估计值与 NU 数据库中收集的 380 份已发表的基本蠕变测试的实验结果进行了广泛的比较，从而表明该方法是可操作的、通用的和相当准确的。最后，