Effect of ester modified triethanolamine on the grinding quality of cement: Insight from fractal and multifractal analysis
Adding triethanolamine (TEA) as grinding aids (GAs) is one of the most effective ways to improve cement clinker grinding efficiency and reduce grinding energy consumption, but its grinding efficiency is limited and potentially compromises the late-stage cement strength. In view of this, ester modifi...
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Veröffentlicht in: | Construction & building materials 2024-09, Vol.443, p.137752, Article 137752 |
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Sprache: | eng |
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Zusammenfassung: | Adding triethanolamine (TEA) as grinding aids (GAs) is one of the most effective ways to improve cement clinker grinding efficiency and reduce grinding energy consumption, but its grinding efficiency is limited and potentially compromises the late-stage cement strength. In view of this, ester modified triethanolamine grinding aids (EGA) was conducted, and the impact on the cement clinker grinding process and mechanical properties was investigated through fractal theory and hydration mechanism analysis. Results showed that compared to the TEA, EGA showed a maximum reduction of 13.2 % in average particle size and promote the silicate phases hydration to overcomes the potential drawback of the late-stage strength reduction observed with TEA. Conventional cement particle evaluation parameters, such as specific surface area and average particle size, only approximate a convergent relationship with cement strength with poor accuracy, but the introduction of fractal parameters, especially the spectral width Δα of the multifractal singular spectrum, enables a meaningful correlation with cement compressive strength.
•EGA was attempted to further improve cement grinding efficiency.•The cement ground with EGA maintains excellent early and late-stage strength.•Fractal theory effectively evaluates cement particle size distribution and predicts strength. |
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ISSN: | 0950-0618 |
DOI: | 10.1016/j.conbuildmat.2024.137752 |