Desulfurized building gypsum (DBG) has great application potential and can be used to produce lightweight plastering gypsum (LPG). In this work, DBG was modified by adding different proportions of ...
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Semantic Scholar extracted view of "Research on optimizing performance of desulfurization-gypsum-based composite cementitious materials based on response …
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The synergistic effect of red mud – desulfurized gypsum - fly ash was found. ... When the content of the three solid wastes was 50%, the compressive strength of the cementitious materials at 28 d was 50.60 MPa, and the mechanical performances at each age were higher than the # 42.5 Portland cement standard. ... Based on the …
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the desulfurization gypsum and to evaluate the relationship between strength and thermal conductivity. 2. Experiment 2.1. Raw Materials The experimental …
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"That leaves Oman as the single most important source of high grade natural gypsum for cement and gypsum board manufacturers across Asia and South/East Africa," he observed. Underscoring the surging demand for Omani gypsum, Salalah Port handled a record 1.6 million tonnes of the mineral during the first two months of this year.
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The utilization of desulfurized building gypsum as raw material for gypsum-based self-leveling mortar (GSL) is limited by its low strength and poor water resistance. The objective of this study is to enhance comprehensive properties of GSL and prepare qualified desulfurized building gypsum-based self-leveling mortar that can be …
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The addition of gypsum reduces earlier strength, but it exceeds the long-term strength compared to the control specimen. Based on these studies and …
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Flue gas desulfurized gypsum (FGD gypsum), mainly originates from thermal power plants, smelters, and large-scale enterprise boilers. This article reviews the production in China and the latest beneficial utilizations of FGD gypsum. China is a large coal-consuming country and has always had serious SO 2 emissions. Therefore, the …
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The utilization of gypsum reinforced composites as building materials has garnered considerable attention owing to their exceptional amalgamation of mechanical strength, fire resistance, and versatile applications. This review initiates by introducing gypsum as a pivotal mineral in construction, subsequently exploring the concept of …
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The mechanical properties of FGD gypsum improved greatly because the whiskers can increase the contact points between the crystals and fill the pores in FGD gypsum. The 7-day dry flexural strength ...
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Two kinds of inorganic reinforcing materials, single Portland cement clinker, compound Portland cement clinker and mineral powder, were used to analyze the effects of desulfurized gypsum on the properties of desulfurized gypsum based cementation material. The results show that either single Portland cement clinker or compound …
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1. Introduction. Flue gas desulfurization gypsum (FGDG) is an industrial byproduct produced by limestone-gypsum wet desulfurization to treat SO 2 produced by thermal power plants and coal-fired plants, whose main component is CaSO 4 ·2H 2 O. In wet desulfurization, 1 t of SO 2 produces about 2.7 t of FGDG [1], [2].Some 130 million …
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Oman: Oman exported 11.2Mt of natural gypsum from its Port of Salalah in 2023, up by 11% year-on-year from 9.9Mt in 2022. Zawawi Minerals has reported that the main destination for exports was India, which received 5.3Mt (47%) of Oman's exported gypsum for the year. Oman is reportedly the source of 90% of India's gypsum imports.
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Current study proposes an effective way to modify the properties of super-sulfated cement (SSC) paste and mortar with preheated flue gas desulfurization (FDG) gypsum at different temperatures and durations, and different sulfate compositions. Preheated FGDs with temperatures between 25 and 150 °C and durations between 0 …
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Flue gas desulfurized gypsum (FGD gypsum), mainly originates from thermal power plants, smelters, and large-scale enterprise boilers.This article reviews the production in China and the latest beneficial utilizations of FGD gypsum. China is a large coal-consuming country and has always had serious SO 2 emissions. Therefore, the …
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The use of waste to capture CO 2 has been on the rise, to reduce costs and to improve the environmental footprint. Here, a flue gas desulfurization (FGD) gypsum waste is proposed, which allows us ...
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Lime vs Gypsum Comparison (differences, and what to use) Leave a comment January 16, ... Gypsum is comprised of calcium sulfate dihydrate, and it's classified as a soft sulfate mineral. It is a popular soil amendment, especially to use for reducing soil salinity and improving soil structure. A lot of folks claim it helps to break up …
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Fly ash and desulfurization gypsum are used as mineral admixtures. The activation effect of sulfate activity is one of the main sources of compressive strength of …
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The test takes the cementing system composed of ordinary Portland cement and desulfurized building gypsum as the research object, and the research is carried out based on the mechanism of the ...
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The test takes the cementing system composed of ordinary Portland cement and desulfurized building gypsum as the research object, and the research is carried out based on the mechanism of the early strength agent that can accelerate the cement hydration reaction in the composite cementing system. ... Guo P.P. et al 2018 …
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DOI: 10.1016/j.conbuildmat.2023.131840 Corpus ID: 258997305; Effects of hybrid fibers on properties of desulfurized gypsum-based composite cementitious materials @article{Lv2023EffectsOH, title={Effects of hybrid fibers on properties of desulfurized gypsum-based composite cementitious materials}, author={Fangtao Lv …
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In addition, the tensile strength and impact strength of FGD gypsum/epoxy resin composites were increased by approximately 30% and 57%, respectively, compared with those of the neat epoxy resin. ...
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Red mud (RM), fly ash (FA) and desulfurized gypsum (DG) are harmful solid wastes that need to be treated. In this study, RM, FA, DG were used as the main raw materials to prepare road base materials based on the different (CaO + Na 2 O)/(SiO 2 +Al 2 O 3) molar ratio, and its mechanical properties, durability, microstructure and …
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The availability and quality of the mined mineral gypsum is one major concern for agricultural soils. India imported around 80% of gypsum to fulfill the consumption of around ten million tonnes ...
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The ultra-high addition of 20 % desulfurized gypsum is beneficial to improve the strength of DG-based binary cementitious materials with low energy consumption. • The …
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Furthermore, recent progress in the carbonation performance of two types of byproduct gypsum, Figure 1. Circulation of desulfurized gypsum in coal-fired power plants through application of mineral ...
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The utilization of desulfurized building gypsum as raw material for gypsum-based self-leveling mortar (GSL) is limited by its low strength and poor water …
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The single-factor experiments are designed to quantitatively investigate the effects of silica fume, mineral powder, and fly ash on the mechanical and thermal …
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Moreover, the solid waste desulfurized gypsum is used as a sulfate activator. The macroscopic experimental results show that the addition of 2 % biochar …
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Chloride ion has an important influence on the performance of gypsum board prepared by desulfurization gypsum, especially in wet environment. Therefore, this paper analyzed the influence of chloride ion on the bonding propertiesof gypsum board and studied the ways to improve the bonding properties of gypsum board prepared by desulfurization gypsum …
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