Abstract An increasing interest has emerged in correlating the output of the concrete mixing truck to values obtained by rotational rheometers. The output of the former has usually been the hydraulic pressure needed to turn the drum. In such research, experimental errors can be higher than usual, which makes it harder to obtain confident relationships. To better understand the physical characteristics of the truck's rheological values, the above analysis is made by a series of computer simulations (i.e. with CFD). From this, it is evident that the slope H of the truck's pressure values depends both on the plastic viscosity μ as well as on the yield stress τ0. However, for the intercept G of the truck's values, it is mostly dependent on the yield stress τ0. In addition to this, both values H and G depend on volume of concrete in the truck as well as on density.

中文翻译：

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混凝土搅拌车作为流变仪

摘要 将混凝土搅拌车的输出与旋转流变仪获得的值相关联的兴趣越来越大。前者的输出通常是转动滚筒所需的液压。在此类研究中，实验误差可能比平时更高，这使得获得自信的关系变得更加困难。为了更好地了解卡车流变值的物理特性，以上分析是通过一系列计算机模拟（即使用 CFD）进行的。由此可知，卡车压力值的斜率 H 取决于塑性粘度 μ 以及屈服应力 τ0。然而，对于卡车值的截距 G，它主要取决于屈服应力 τ0。除此之外，