Qiyan Li
Harbin Institute of Technology
9 Papers
Qiyan Li is an academic researcher from Harbin Institute of Technology. The author has contributed to research in topics: Cement & Compressive strength. The author has an hindex of 5, co-authored 5 publications.
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Papers
Effect of pulverized fuel ash, ground granulated blast-furnace slag and CO2 curing on performance of magnesium oxysulfate cement
TL;DR: In this article, the influence of pulverized fuel ash (PFA) and ground granulated blast-furnace slag (GGBS) on compressive strength and water resistance of magnesium oxysulfate (MOS) cement with and without CO2 curing treatment was investigated.
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Upcycling carbon dioxide to improve mechanical strength of Portland cement
Ling Qin,Xiaojian Gao,Qiyan Li +2 more
TL;DR: In this paper, a novel approach was developed to manufacture nano-calcium carbonate (nano-CaCO3) suspension by upcycling carbon dioxide, which accelerated the early age hydration of Portland cement and refined the pore structure.
95
Effect of carbonation curing on sulfate resistance of cement-coal gangue paste
TL;DR: In this paper, the effect of carbonation curing on sulfate attack resistance of cement-coal gangue (PC-CG) pastes was investigated after different durations of sulfate solution immersion and the microstructure deterioration mechanism was determined using X-ray diffraction (QXRD/Rietveld), thermogravimetry differential thermal analysis (TG-DTA), mercury intrusion porosimeter (MIP), scanning electron microscope (SEM) measurements.
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Influences of coal fly ash containing ammonium salts on properties of cement paste.
Ling Qin,Xiaojian Gao,Qiyan Li +2 more
TL;DR: Experimental results showed that the chemical admixtures adsorbed by coal fly ash were increased by the introduction of NH3HSO4 or (NH3)2SO4 and the pore structure was coarsened and porosity was increased for the hardened cement specimens due to the release of ammonia and lower hydration degree.
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Effect of carbonation curing on durability of cement mortar incorporating carbonated fly ash subjected to Freeze-Thaw and sulfate attack
TL;DR: In this paper , the carbonation treatment of high-calcium fly ash (HFA) is applied for stabilization of hazardous residues and CO 2 sequestration in construction materials, and the improvement on durability of carbonation-cured cement mortar incorporating carbonated HFA against coupled freeze-thaw and sulfate attack is investigated.
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