phosphogypsum for cement in Mexico
Investigation on the preparation of low carbon cement …
1. Introduction. Phosphogypsum (PG) is an industrial by-product gypsum produced by the phosphorus chemical industry, which contains a variety of impurities including acids, fluorides, organics and others (Cuadri et al., 2014; Qin et al., 2023; Wu et al., 2022a).Statistics show that wet production of 1t of phosphoric acid produces 4.55 t …
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Effect of Phosphogypsum on the Properties of Portland Cement
Properties of phosphogypsum were evaluated and then the effect of various level phosphogypsum addition (2, 5, 10 and 15 percent by weight of cement) with Portland cement clinker was investigated.
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Energy Geotechnics: from fundamentals to applications
Thermal properties of soft clayey soils from the former Lake Texcoco in Mexico. Norma Patricia López-Acosta, Diana Margarita Portillo-Arreguín, David Francisco Barba-Galdámez, Rao Martand Singh ... select article Effect of phosphogypsum on physiochemical and mechanical behaviour of cement stabilized dredged soil from …
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Phosphogypsum: potential uses and problems – a …
Phosphogypsum is used in agriculture for soil amendment or as fertilizer, as well as in the brick and cement industry, and in road construction. Keywords: Phosphogypsum
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Mechanical properties and environmental implications of …
DOI: 10.1016/j.jobe.2024.110008 Corpus ID: 270683037; Mechanical properties and environmental implications of excess-sulfate cement concrete with phosphogypsum-based cold-bonded fine aggregates
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Durability of phosphogypsum-based supersulfated cement mortar …
Pinto et al. [46] also observed the sharp mass gain (11.89%) in the phosphogypsum-based supersulfated cement mortar after 20 weeks of MgSO 4 attack, which was mainly attributed to the formation of ...
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Effect of Modified Phosphogypsum on Properties of Cement …
The resource utilization of phosphogypsum (PG) can reduce the consumption of resources, turn waste into valuables, turn damage into profit, and form a green recycling economy of "resources-products-regenerated resources." The article, combined with the co ... Effect of Modified Phosphogypsum on Properties of Cement …
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Effect of Phosphogypsum on the Properties of Portland …
The beneficiated phosphogypsum can be used as an additive in place of mineral gypsum in the manufacturing of Portland cement and Portland slag cement. …
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Effect of Modified Phosphogypsum on Properties of Cement …
The resource utilization of phosphogypsum (PG) can reduce the consumption of resources, turn waste into valuables, turn damage into profit, and form a …
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Valorization of phosphogypsum in cement-based materials: …
The data were selected from a comprehensive literature review, focusing on research on the feasibility of formulating HCBPG (Hydraulic Cement Based on Phosphogypsum) and the application in building materials.
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Characterization and purification of waste phosphogypsum to …
Phosphogypsum (PG) is a synthetic by-product created during the commercial manufacture of phosphoric acid by the wet process. ... Characterization and purification of waste phosphogypsum to make it suitable for use in the plaster and the cement industry. Yassine Ennaciri Laboratory of Physical Chemistry of Materials …
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Frontiers | An Eco-Friendly Phosphogypsum-Based …
Little published data were effective in decreasing the setting time and improving the strength development of phosphogypsum-based supersulfate cement (P-SSC) containing an excess of 40% …
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Eco-friendly Super Sulphated Cement Concrete …
Eco-friendly Super Sulphated Cement Concrete Using Vietnam Phosphogypsum and Sodium Carbonate Na2CO3. November 2022; Civil Engineering Journal 8 ... The concrete mix has good …
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Retardation mechanism of phosphogypsum in phosphogypsum …
DOI: 10.1016/j.conbuildmat.2024.136293 Corpus ID: 269298465; Retardation mechanism of phosphogypsum in phosphogypsum-based excess-sulfate cement @article{Wu2024RetardationMO, title={Retardation mechanism of phosphogypsum in phosphogypsum-based excess-sulfate cement}, author={Yi Wu and Fang Xu and …
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Phosphogypsum as a construction material
Phosphogypsum (PG) is a by-product generated from the phosphorus fertilizer industry (phosphoric acid production). PG is similar to natural gypsum, but there are some differences, of which it contains some impurities such as water-soluble phosphate (P 2 O 5), water-soluble fluoride (F −) and P 2 O 5 substituted in the gypsum crystal …
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Valorization of phosphogypsum in cement-based …
Phosphogypsum (PG) is a type of synthetic gypsum generated during the production of phosphoric acid. Each ton of phosphoric acid generates 5 tons of phosphogypsum. This …
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Utilization of Industrial Waste Phosphogypsum as …
Abstract Phosphogypsum (PG) is a waste product of phosphate fertilizer and phosphoric acid industries. Vast quantities of the waste product are generally left stockpiled on the ground or discharged into rivers or ponds, and pose serious environmental ...
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Development and optimization of phosphogypsum-based geopolymer cement
Phosphogypsum (PG) is a solid waste product that is generated in the phosphoric acid manufacturing process, most of which is currently sent to landfills rather than reused. In this study, beta-hemihydrate phosphogypsum (β-HPG), slag, fly ash (FA) and alkali activator were mixed to form a phosphogypsum-based geopolymer (PBG) …
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Effect of alkalinity on phosphogypsum-base non-calcined cement
The optimum mass ratio of water to cement is 0.24~0.26, mass ratio of aggregate to cement is 3, and the optimum percentage range is 60%~ when aggregates with 2.36~4.75 mm particle size were ...
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Valorization of phosphogypsum in cement-based materials: …
Current demand for waste recycling, phosphogypsum-based excess-sulphate slag cement (PESSC) as a sustainable cement prepared by solid wastes, …
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PHOSPHOGYPSUM: A Review of the Florida Institute …
cement from phosphogypsum and phosphatic tailings sand. SO2 would have been produced as a by-product for conversion to sulphuric acid, The process was not successful in that it was not possible to obtain the high-quality cement product. With the funding of "Gypsum By-Product Exploitation," the Institute
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Potential use of phosphogypsum in concrete
An experimental study was conducted to investigate the potential use of phosphogypsum (PG) in concrete. This was accomplished by preparing mortar mixes at a water/cement ratio of 0.6 using two types of cement, ordinary Portland cement (OPC) and pozzolanic Portland cement (PPC), and two types of fine aggregate, natural river sand …
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Modification of recycled cement with phosphogypsum and …
Some studies showed that the soluble phosphorus and fluorine in the PG would react with Ca(OH) 2 produced by cement hydration and then generate precipitates coating the surface of the cement particles, which would restrict cement hydration causing longer setting time and lower early strength [38], [39], [40]. Therefore, it is essential to …
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Phosphogypsum: potential uses and problems – a review
Properties of phosphogypsum were evaluated and then the effect of various level phosphogypsum addition (2, 5, 10 and 15 percent by weight of cement) with Portland cement clinker was investigated.
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Hydration mechanism of a sodium-doped phosphogypsum …
1. Introduction. Supersulfated cement (SSC) is a binder with little Portland cement clinker. It is usually made up of 75–85 % granulated blast furnace slag (GGBFS), 10–20 % calcium sulfate, and less than 5% alkaline activator [1], [2], [3], [4].SSC is a low-carbon cementitious material, and its main raw material, slag, comes from a by-product …
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Purification of South African phosphogypsum …
Phosphogypsum treated by this means could successfully replace natural gypsum in Portland cement. Introduction Phosphogypsum is a by-product of the manufacture of phosphoric acid by a wet chemical ...
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Study on the properties of an excess-sulphate phosphogypsum slag cement …
Excess-sulfate phosphogypsum slag cement (ESPSC) is a low-carbon cementitious material. It comprises 40–50 % PG, 30–40 % granulated blast furnace slag, and a small amount of cement as an activator [16]. The ESPSC exhibits excellent later-age compressive strength [17], sulphate resistance [18] and water resistance [19].
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Preparation and Micromechanics of Red Sandstone–Phosphogypsum–Cement
Based on the physical and chemical properties of red sandstone (RS), RS is used to produce composite cementitious materials. The flowability, mechanical strength, and micromechanics of a red sandstone–cement binary cementitious material (RS-OPC) were investigated as functions of the amount of RS replacing the cement (OPC). …
ادامه مطلبA binder of phosphogypsum-ground granulated blast furnace …
A new hydraulic cementitious binder was developed by mainly utilizing industrial byproducts phosphogypsum (PG) and ground granulated blast furnace slag (GGBFS) with small addition of ordinary portland cement (OPC). The hydration process and microstructure were studied by X-ray diffraction (XRD) and scanning electronic …
ادامه مطلبExcess-sulphate phosphogypsum slag cement blended with …
The detailed manufacturing process and study strategy were described in Fig. 2, where the preparation of ESPSC pastes contained two steps, i.e., original phosphogypsum modification and new cementitious material fabrication.A mix of fresh phosphogypsum, slag, and cement with a proportion of 94:2:4 was wet-milled firstly for …
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