2021
DOI: 10.3390/cryst11121475
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Effects of Fluorogypsum and Flue-Gas Desulfurization Gypsum on the Hydration and Hardened Properties of Alkali Slag Cement

Abstract: In order to explore the influence of the types of waste gypsum on the properties of alkali slag cement, fluorogypsum (FG) and flue-gas desulfurization (FGD) gypsum were comparatively investigated. Moreover, the action mechanisms of FG and FGD gypsum on the properties of alkali slag cement were analyzed. The results show that both the FG and FGD gypsum prolonged the setting time of the alkali slag cement paste. However, the prolongation effect of FG was more pronounced than the FGD gypsum. When the compressive … Show more

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Cited by 12 publications
(4 citation statements)
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“…Desulfurization gypsum (DE), a by-product of sintering flue gas desulfurization, has gained significant attention for its potential for environmental improvement ( Zhao et al, 2018 ; Wang et al, 2021 ). Numerous studies have highlighted the significant advantages of utilizing desulfurization gypsum as a soil conditioner, such as reduction in nutrient leaching ( He et al, 2019 ), improvement in soil fertility ( Tao et al, 2019 ; Zhang et al, 2021 ), and promotion in plant growth and yield ( Wang et al, 2023 ).…”
Section: Introductionmentioning
confidence: 99%
“…Desulfurization gypsum (DE), a by-product of sintering flue gas desulfurization, has gained significant attention for its potential for environmental improvement ( Zhao et al, 2018 ; Wang et al, 2021 ). Numerous studies have highlighted the significant advantages of utilizing desulfurization gypsum as a soil conditioner, such as reduction in nutrient leaching ( He et al, 2019 ), improvement in soil fertility ( Tao et al, 2019 ; Zhang et al, 2021 ), and promotion in plant growth and yield ( Wang et al, 2023 ).…”
Section: Introductionmentioning
confidence: 99%
“…Industrial byproduct gypsum is a solid waste produced through industrial production processes with hydrated calcium sulfate as the primary component. Phosphogypsum and flue-gas desulfurization (FGD) gypsum are the main types of industrial byproduct gypsum [3,4]. Phosphogypsum is produced during the preparation of phosphoric acid using the wet method [5,6], FGD gypsum is produced during FGD in thermal power plants [7][8][9].…”
Section: Introductionmentioning
confidence: 99%
“…Papers [13,14] described techniques for studying calcium carbonate. In paper [13], a halochrome TF PLPt sensor was used which scans in real-time the interaction of alkaline medium and calcium carbonate in concrete.…”
Section: Introductionmentioning
confidence: 99%
“…In paper [13], a halochrome TF PLPt sensor was used which scans in real-time the interaction of alkaline medium and calcium carbonate in concrete. In [14] the effect of gypsum waste types on the properties of alkaline slag cement paste was studied using XRD, TG-DTA and SEM-EDS methods. Some of their research methods are noteworthy and will be taken into account when studying the acid effect of calcium sulfate during conversion to calcium carbonate.…”
Section: Introductionmentioning
confidence: 99%