This study investigates the influence of nano clay on the rheological properties of alkali-activated cement pastes having different GGBFS/FA ratios. The thixotropic index, structural build-up, dynamic yield stress and heat evolution of fresh AAC pastes with addition of nano clay are studied. Test results showed that nano clay had a strong influence on the thixotropy/structural build-up and dynamic yield stress of AAC pastes depending on the GGBFS/FA ratio of the mixture. It was found that the pastes with lower GGBFS/FA ratio exhibited higher thixotropic index, but lower dynamic yield stress in the presence of nano clay. This study reveals the importance of GGBFS/FA ratio in the presence of nano clay for obtaining AAC mixtures with low dynamic yield stress for a better flowability and high thixotropy/structural build-up for stability.

本研究调查了纳米粘土对具有不同 GGBFS/FA 比率的碱活化水泥浆体的流变特性的影响。研究了添加纳米粘土的新鲜 AAC 糊料的触变指数、结构建立、动态屈服应力和热演化。测试结果表明，纳米粘土对 AAC 糊料的触变性/结构累积和动态屈服应力有很大影响，具体取决于混合物的 GGBFS/FA 比。结果表明，在纳米粘土存在下，具有较低 GGBFS/FA 比率的糊状物表现出较高的触变指数，但较低的动态屈服应力。该研究揭示了在纳米粘土存在下 GGBFS/FA 比率对于获得具有低动态屈服应力的 AAC 混合物的重要性，以获得更好的流动性和高触变性/结构积聚以实现稳定性。