Good fluidity is the precondition to ensure the pipeline transportation of the filling slurry. The admixture in the filling slurry will affect the rheological properties of the slurry. In this paper, yield stress (YS), viscosity coefficient (VC), and expansion (ED) of the filling slurry were measured by the MCR52 rheometer and expansion tester, respectively, and the influence regularities of the three kinds of admixtures including fly ash (FA), polycarboxylate superplasticizer (PS), and polyethylene oxide (PEO) on the rheological properties of the filling slurry were obtained. The results show that when other conditions are fixed, the fluidity of the slurry becomes worse with the increase of the amount of fly ash but improves with the increase of the amount of the polycarboxylate superplasticizer; polyethylene oxide is not suitable for the improvement of the fluidity of the high-concentration full-tailing filling slurry, and the fluidity of the slurry becomes worse rapidly with the increase of the amount of polyethylene oxide.

中文翻译：

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粉煤灰和化学外加剂对高浓度全填缝填料浆体流变特性的影响

良好的流动性是确保填充浆液通过管道运输的前提。填充浆料中的混合物将影响浆料的流变性。本文分别通过MCR52流变仪和膨胀试验仪分别测定了填充浆液的屈服应力（YS），黏度系数（VC）和膨胀率（ED），以及粉煤灰对三种掺合料的影响规律。得到（FA），聚羧酸盐高效减水剂（PS）和聚环氧乙烷（PEO）对填充浆料的流变性的影响。结果表明，在其他条件不变的情况下，粉煤灰的流动性随粉煤灰量的增加而变差，但随聚羧酸盐类高效减水剂的增加而改善。