期刊
MATERIALS AND STRUCTURES
卷 54, 期 4, 页码 -出版社
SPRINGER
DOI: 10.1617/s11527-021-01760-4
关键词
Thixotropy; Ground blast-furnace slag; Fly ash; Nano clay; Structural build-up
资金
- FWO-EOS [30439691]
This study investigates the influence of nano clay on the rheological properties of alkali-activated cement pastes with different GGBFS/FA ratios. The results show that nano clay has a significant impact on thixotropy/structural build-up and dynamic yield stress, depending on the GGBFS/FA ratio of the mixture.
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.
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