The rheological properties of sands conditioned with different conditioners and injection ratios were examined. The conditioned sands were prepared with a 40% and 60% volume injection ratio of a bentonite slurry or a carboxymethyl cellulose (CMC) solution. The experiment results show that the tested bentonite-conditioned sand exhibits the characteristics of a Herschel-Bulkley fluid at shear rates in the range of 0–10 s⁻¹ while the CMC-conditioned sand conforms to the power law model. The flow curves of all of the samples show a marked shear-thinning behavior. They also indicated that the existence of a yield stress (τ₀) depends only on the rheological behavior of the conditioner and that the yield stress (τ₀ if present) and the plastic viscosity (μ_p) increase with an increase in the volumetric concentration of the sand. Furthermore, to characterize the thixotropy of the conditioned sand, experiments were carried out by using three loading histories with shear rate accelerations of 0.1, 0.2 and 0.4 s⁻¹/s. In the measured results, the thixotropy of the conditioned sand is heavily dependent on the recent flow history. Based on the experimental data, a simple thixotropic prediction model was developed to analyze and predict the transient flow curves of bentonite-conditioned sands.

检查了用不同的调节剂和喷射比调节的砂的流变特性。用40％和60％体积比的膨润土浆料或羧甲基纤维素（CMC）溶液制备经调节的砂子。实验结果表明，经测试的膨润土处理过的砂在0-10 s ^-1范围内的剪切速率下具有Herschel-Bulkley流体的特征，而CMC处理过的砂符合幂律模型。所有样品的流动曲线均显示出明显的剪切稀化行为。他们还指出，屈服应力的存在（τ ₀）仅取决于调节器的流变行为和屈服应力（τ ₀，如果存在）和塑性粘度（μ_p）随着沙子体积浓度的增加而增加。此外，为了表征条件砂的触变性，使用三种加载历史进行了实验，这些加载历史的剪切速率加速度分别为0.1、0.2和0.4 s ^-1 / s。在测量结果中，条件砂的触变性在很大程度上取决于最近的流动历史。基于实验数据，建立了简单的触变预测模型来分析和预测膨润土条件下砂土的瞬态流动曲线。