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Phosphogypsum (PG) is a by-product of the production of fertilizers from phosphate ores, and it contains some harmful substances to the environment. Thus, it is necessary to stabilize/solidify pollutants when using PG as a filling material. The purpose of this study is to investigate and verify the use of PG as a filling material for a road base …
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1st Spanish National Conference on Advances in Materials Recycling and Eco – Energy Madrid, 12-13 November 2009 S03-4 83 ADVANTAGES AND DISADVANTAGES OF …
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Phosphogypsum (PG) is a byproduct of the wet manufacturing process for phosphoric acid and is considered an industrial waste material. Around 5 tonnes of PG …
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The impurities in phosphogypsum and its harm to the environment were introduced, and the advantages and disadvantages of the widely used pretreatment methods were analyzed in this paper. The application of phosphogypsum in the fields of cement retarder, building materials, agriculture, the production of sulfuric acid co …
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Large quantities (approximately 69 million tons) of phosphogypsum are produced as a by-product of the fertiliser industry in Brazil. Although phosphogypsum is mainly calcium sulphate dihydrate, it contains a high level of impurities, including uranium and thoriu decay products, which originate primarily from the source phosphate rock …
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Phosphogypsum (PG), the main industrial by-product of phosphate fertilizer industry, primarily consists of calcium sulfate dihydrate. However, it contains various impurities with variable quantities depending on the origin of the phosphate rock. ... Over the years, research has been conducted to utilize PG as a building material component …
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To explore the enduring durability of the solidified matrix comprising phosphogypsum slag-based cementitious material (PSC) in a carbonization environment, the carbonization behavior of cadmium (Cd) solidified within an accelerated carbonization environment was examined. The carbonation depth, mechanical strength, and Cd …
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Five clusters were formed: a red cluster-phosphogypsum recycling in the construction industry; green cluster-radiation pollution problem of phosphogypsum and phosphate fertilizers; yellow cluster ...
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Valorization of phosphogypsum in cement-based materials: Limits and potential in eco-efficient construction. Bianca R.S. Calderón-Morales, ... Rafael García-Tenório, in …
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The best known disadvantages of adobe are its low mechanical properties and poor resistance to water damage. In this research waste phosphogypsum (PG) and natural gypsum were used as stabilization ...
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Phosphogypsum has poor cementitious activity, which hinders its large consumption in the field of building materials. By studying the phase and microstructure of phosphogypsum pretreated by alkali activation, and the compressive strength, and microstructure of the non-sintering building materials prepared with the high content …
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In countries where reuse is practiced – such as road building, construction material, fertilizer, and landfill cover – up to 20% of annual phosphogypsum production is diverted from stacking to other uses. While the approval of TFI's request does not mean that phosphogypsum will become widespread in roads, it allows state and local ...
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Valorisation of phosphogypsum as building material: radiological aspects ... 2011; Nowadays, alternative uses of phosphogypsum (PG) in the building industry are being considered in several countries; however, the natural radioactivity level in the PG could be a restriction for ... Advantages and disadvantages of using phosphogypsum …
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Development of phosphogypsum building materials. Although remarkable progress has been achieved in PG building materials in recent years, besides other existing and ongoing research, the following three aspects need further study. (1) Removing impurities. In order to improve impurity removal efficiency, it is more …
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PRODUCING ENVIRONMENT-CONSCIOUS BUILDING MATERIALS FROM CONTAMINATED PHOSPHOGYPSUM Konstantin Kovler1) and Michael Somin2) 1) Faculty of Civil and Environmental Engineering, Technion – Israel Institute of Technology, Haifa, Israel 2) Phosphate Technology Ltd., Haifa, Israel Abstract It is known that …
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Phosphogypsum (PG) waste is a by-product generated from wet-process phosphoric acid (H3PO4) manufacturing during phosphate rock decomposition. Worldwide, the annual production of PG ranges between 100 and 300 million tons, with only a few quantities utilized in several application domains (about 15%), the unused PG is usually …
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Phosphogypsum (PG) is a waste (or by-product) of the production of phosphoric acid, a basic constituent in the manufacturing of modern fertilizers. The annual production of phosphogypsum in Tunisia is currently estimated to be 10 million tons. Its storage in slag in close proximity to production plants generates pollution problems; …
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Phosphogypsum (PG) is a by-product generated from the phosphorus fertilizer industry (phosphoric acid production). PG is similar to natural gypsum, but there …
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A promising application is in the passive energy-saving buildings, where PG is prepared as matrix material and coupled with phase change materials to fabricate composite building materials with thermal energy storage function. This may solve the stack and storage problem of unused PG and relieve the pressure on the environment.
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Utilisation of PG in building materials. One of the main possibilities for the utilisation of PG is found in the field of building materials. PG can be used as an additive to cement [[37], [38], [39]], but also as the binding material of construction products, such as wall blocks, tiles or boards. The mechanical properties of PG products are ...
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1st Spanish National Conference on Advances in Materials Recycling and Eco – Energy Madrid, 12-13 November 2009 S03-4 83 ADVANTAGES AND DISADVANTAGES OF USING PHOSPHOGYPSUM AS BUILDING MATERIAL. RADIOLOGICAL ASPECTS C. Gascó1, A.Alvarez1, N.Navarro1, L. Yagüe1, H.Tayibi2, F.A.López2, A. López-Delgado2 …
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It can be concluded that using treated PG in proportions up to 100 % of building materials and other applications will be safe from the radiation protection perspective. Phosphogypsum (PG) was treated to reduce activity concentrations of 226Ra, which was found to exceed that permitted by international regulations. Treatment methods using …
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Phosphogypsum (PG), a byproduct during the phosphoric acid production process, also known as the wet process, contains complex and diverse impurities, resulting in low utilization and considerable accumulation. This leads to a massive waste of land resources and a series of environmental pollution problems. Given the current urgent …
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Types of Building Materials. Following are the type of the most common building materials, which are a popular choice in any building construction, along with their Advantages and Disadvantages of using it. Stone. Stones are very popular building materials, as they got adequate drainage capacity.
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More specifically, PG can be used as a substitute in the cement industry, in building materials and in road construction, as a fertilizer for soil improvement, as a raw material for the production of some chemicals, and as a backfilling material for the rehabilitation of abandoned mines and quarries, while the recovery of gypsum and the ...
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The main disadvantages of the existing methods of phosphogypsum processing were identified and trends in this waste management were also considered. ... The article shows that all studied types of waste have astringent properties and can be used as building materials. In this work, a study of the properties of large-tonnage wastes of the ...
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Phosphogypsum is a kind of solid waste that occupies land resources and harms the environment. It can be used as a solidified material, but the utilization of phosphogypsum is limited by its …
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Valorization of phosphogypsum in cement-based materials: Limits and potential in eco-efficient construction. Bianca R.S. Calderón-Morales, ... Rafael García-Tenório, in Journal of Building Engineering, 2021. Abstract. Phosphogypsum (PG) is a type of synthetic gypsum generated during the production of phosphoric acid. Each ton of phosphoric …
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As phosphogypsum constitutes a large amount of solid waste material, its purification treatment and comprehensive utilization have close connection with economic development and ecological …
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Phosphogypsum (PG) is a by-product of the phosphate fertilizer industry that is produced during the phosphoric acid production process. Annual global PG production ranges …
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