The present work analyses the basic creep of concrete compositions for which 75% of Portland cement is substituted by limestone filler and/or blast furnace slag. Compressive creep tests are performed during and after the peak of hydration of the slag in order to track the effect of the slag on the development of the creep properties. An adapted version of the Model Code 2010 (MC2010) is used to model basic creep. It is observed that the high substitution rate of cement by limestone filler and/or slag leads to a significant change in the evolution of the viscoelastic properties of concrete till a significant degree of reaction of slag is reached. It corresponds to the end of the second peak of hydration due to slag. After the slag peak of hydration, the basic creep is similar to ordinary Portland cement concrete with equivalent water‐to‐binder ratio. For very early age, a new model is developed and is composed of two terms, which consider the hydration of (a) Portland cement and (b) slag in the aging of the specific creep function.

中文翻译：

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早期矿物添加对波特兰水泥高取代率混凝土的基本蠕变的预测

本工作分析了用75％的波特兰水泥代替石灰石填料和/或高炉矿渣的混凝土组合物的基本蠕变。在炉渣水化峰值期间和之后进行压缩蠕变试验，以跟踪炉渣对蠕变性能发展的影响。模型代码2010（MC2010）的改编版用于对基本蠕变进行建模。可以看出，水泥被石灰石填料和/或炉渣的高替代率导致混凝土的粘弹性的演变发生显着变化，直到达到炉渣的显着反应程度为止。它对应于由于炉渣而引起的第二水合峰的末端。在水化炉渣达到峰值之后，基本蠕变类似于具有相同水灰比的普通波特兰水泥混凝土。对于非常早的年龄，开发了一种新模型，该模型由两个术语组成，它们考虑了（a）波特兰水泥和（b）矿渣在特定蠕变功能的老化过程中的水合作用。