中文摘要：

采用低p H值水泥基材料固化高放射废弃物具有很好的优势,而水泥基灌浆材料的流变性能是评价高放废物深地质处置用灌浆材料的重要指标之一。探究了水灰比、外加剂对磷铝酸盐水泥流变性能以及保水性能的影响规律。结果表明：水灰比越大,浆体粘度越小,流动性能越好,但浆体越不稳定,越容易离析;而且Mg O膨胀剂的掺入,增大了浆体的粘度,其中膨胀剂活性越高,浆体的流变性越差;羟丙基甲基纤维素醚以及钠基膨润土掺入改善水泥浆体保水性能,羟丙基甲基纤维素醚的保水效果优于钠基膨润土,当HPMC掺量大于0.3%,灌浆液不析水;掺加减水剂降低了浆体的粘度,且聚羧酸系减水剂的减水效果优于萘系减水剂,同时减水剂的掺入会使浆体的稳定性下降。

英文摘要：

The fluidity and rheology of cement-based grouting materials is one of the important assess standard for deep geological disposal of high radioactive waste. Addtionatly, a low pH value have a advantage of a solidification cement-based grouting material. The disciplinarian of water cement ratio, additives to the capacity of water retention, rheological properties of aluminophosphate cement were studied. The results show that a greater water cement ratio contribution to a smaller viscosity and better fluidity, but a negative effect for the and segregation. With the increasing dosage of mgo-based expansive agent, the viscosity of paste is increased. Furthermore, the higher activity of swelling agent, the worse the rheological properties of paste; Hydroxypropyl methyl cellulose ether（HPMC） and sodium bentonite both can improved water retention properties of cement paste, but the former is superior to the latter in some aspects. When the dosage of HPMC is more than 0.3%, the segregation of cement-based grouting materials cannot be found. It is known that the water reducing effect of polycarboxylate superplasticizer is better than that of naphthalene superplasticizer, adding water reducing agent can reduce the viscosity as well as the stability of paste.