phosphogypsum modified with lime in Mexico

Experimental Study on the Road Performance of …

Peng Bo et al. utilized phosphogypsum to modify lime-treated and cement-treated soils, conducting a series of laboratory tests to confirm the feasibility of …

Potential of Bentonite-lime-mix Modified with Phosphogypsum …

Materials such as lime, phosphogypsum and sisal fibres have been chosen to improve the strength of the bentonite and to improve the toughening behavior of the modified bentonite-lime-phosphogypsum mix. Therefore, compaction, unconfined compressive strength and California bearing ratio tests were thus performed. The standard proc2 Period. Polytech.

Geotechnical Properties and Application of Lime Modified Phosphogypsum

Residual deposits of Phosphogypsum are readily available in large quantities in South Africa and currently are landfilled or pumped into the sea, as there are limitations to engineering applications due to the radionuclides content. In this study, mild acid treated residual phosphogypsum was stabilized with Lime Fly Ash (LFA) binder, …

Cross-Scale Study on Lime Modified Phosphogypsum …

Pore structure is a critical factor affecting the strength characteristics of mine backfill materials. In this paper, based on the mechanical tests on lime modified phosphogypsum cemented backfill (LMPGCB), the microstructure of the LMPGCB sample was characterized by nuclear magnetic resonance (NMR) and scanning electron …

Mechanical properties and micro-mechanism of improved …

Massive shield tunnel muck is being landfilled without effective use due to high moisture contents and poor engineering properties, which not only leads to soil resources waste, but also occupies a large amounts of land sources.In this study, industrial waste phosphogypsum (PG) was recycled to improve the tunnel muck with lime, and …

Development of low content phosphogypsum waste composites modified …

Development of low content phosphogypsum waste composites modified by lime-fly ash-basic oxygen furnace slag T. P. Mashifana, F. N. Okonta, F. Ntuli Chemical Engineering Technology

Effect of Modified Phosphogypsum on Properties of …

Abstract. 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 comprehensive utilization of PG, analyzes the existing problems. …

Investigation on Engineering Characteristics of Lime …

In this study, phosphogypsum was stabilized by lime to improve the mechanical properties [California bearing ratio (CBR), resilience modulus, unconfined …

Mechanical properties and micro-mechanism of improved …

DOI: 10.1016/j.conbuildmat.2023.134437 Corpus ID: 266295012; Mechanical properties and micro-mechanism of improved shield tunnel muck with phosphogypsum and lime @article{Jiao2024MechanicalPA, title={Mechanical properties and micro-mechanism of improved shield tunnel muck with phosphogypsum and lime}, …

Effect of Modified Phosphogypsum on Properties of …

The results show that the performance of the obtained mixture powder activation index was better when it was weakly acidic; it is suggested that the optimal pH value range of lime neutralization ...

Highly efficient modified phosphogypsum building gypsum …

DOI: 10.1007/s43452-024-00933-6 Corpus ID: 269114202; Highly efficient modified phosphogypsum building gypsum powder and environmentally friendly utilisation in self-levelling mortar

Plasticity, Swell‐Shrink, and Microstructure of …

The study involved utilization of an industrial waste, Phosphogypsum (PG), as an additive to lime stabilization of an expansive soil. Three lime dosages, namely, initial …

Modification of Lime‐Fly Ash‐Crushed Stone with Phosphogypsum …

1. Introduction. Phosphogypsum (PG) a by-product from the phosphoric acid industry is a remarkable solid waste, and about 4.5–5.0 tonnes of dry-based PG is outputted per ton of phosphoric acid (as P 2 O 5) recovered [].Approximately 20 million tonnes of PG is generated in China every year, and its utilization ratio is not more than …

PHOSPHOGYPSUM: A Review of the Florida Institute …

disposal,most of the phosphogypsum produced here has been piled on land. Again,it must be remembered that plant size (capacity) was a big factor in determining if there was a phosphogypsum problem. With the advent of 300, 500, 1000 and even 4000-5000 tons per day P,05 plants, the phosphogypsum disposal problem took on …

Development of low content phosphogypsum waste …

Development of low content phosphogypsum waste composites modified by lime-fly ash-basic oxygen furnace slag T.P. Mashifana1, 2, F.N. Okonta2, F. Ntuli1 1University of Johannesburg, Department of Chemical Engineering, P.O. Box 17011, Doornfontein 2088, South Africa. Tel.:+27 11 559 6527, Email: [email protected] (Corresponding author)

Valorization of phosphogypsum as a road material: …

To this end, nine Phosphogypsum-Fly Ash-Lime formulations are designed, in a way to maximize the phosphogypsum valorization rate; the mechanical, …

Application of lime neutralised phosphogypsum in …

DOI: 10.1016/j.jclepro.2020.122660 Corpus ID: 224958704; Application of lime neutralised phosphogypsum in supersulfated cement @article{Liu2020ApplicationOL, title={Application of lime neutralised phosphogypsum in supersulfated cement}, author={Shuhua Liu and Peipei Fang and Jun Ren and Shefeng Li}, journal={Journal of …

Investigation of phosphogypsum-based cementitious …

An appropriate amount of lime modified phosphogypsum helps remove impurities in phosphogypsum, improves the reactivity of slag powder, and promotes the generation of hydration products. As a result, the macropores in the matrix transform …

Compaction Characteristics and Bearing Ratio of Pond Ash …

Compaction Characteristics and Bearing Ratio of Pond Ash Stabilized with Lime and Phosphogypsum. Author: Ambarish Ghosh [email protected] Author Affiliations. ... (2001). "Microstructural development in fly ash modified with lime and gypsum." J. Mater. Civ. Eng., 13(1), 65–70. Crossref. Google Scholar. Ghosh, A., and …

Development of low content phosphogypsum waste composites modified …

Development of low content phosphogypsum waste composites modified by lime-fly ash-basic oxygen furnace slag. T. P. Mashifana, F. N. Okonta, F ... F. N. ; Ntuli, F. / Development of low content phosphogypsum waste composites modified by lime-fly ash-basic oxygen furnace slag. In: Revista Romana de Materiale/ Romanian Journal of …

Experimental Study on Phosphogypsum-Amended Red …

principal curing agents, cement, lime, and phosphogypsum were utilized to enhance red mud. The dosage of the modiﬁer and the level of compaction were two crucial indicators

Experimental Study on the Road Performance of High …

ash–lime–phosphogypsum composite as the base course in road pavements. Al-Zaidyeen and Al-Qadi (2015); James and Pandian (2015); and de Rezende Lilian et al. (2017) found that

Highly Efficient Removal of Congo Red from Aqueous Solution by Lime

Phosphogypsum (PG) modified by milk of lime (namely lime-preconditioned phosphogypsum, PPG) is investigated to evaluate the adsorption thereof for removing Congo Red (CR) from aqueous solution. The experimental parameters, such as adsorbent dosage, pH, adsorption temperature, initial CR concentration and contact …

Strength characteristics of fly ash stabilized with lime and modified …

2.1. Experimental procedure. In the present study the optimum mix of fly ash (FA)-lime (L)-phosphogypsum (PG) was arrived by trial. On the basis of literature study, the content of lime and phosphogypsum was varied from 2% to 10% and 0.5–4% respectively and further the optimum mix was arrived from the results of Standard …

Laboratory investigation of the swelling pressure of …

The findings indicated that adding 8% phosphogypsum to the bentonite + 8% lime mix increased dry unit weight and optimum moisture content, percentage of swell, …

Cross-Scale Study on Lime Modified Phosphogypsum …

In this paper, based on the mechanical tests on lime modified phosphogypsum cemented backfill (LMPGCB), the microstructure of the LMPGCB …

(PDF) Compaction Characteristics and Bearing Ratio of Pond …

To improve the early strength and seven-day compressive strength of the PG-lime mixture, Shen et al. (2007) and Shen et al. (2008) gave a more precise range, that is, the content of lime should be ...

Compaction Characteristics and Bearing Ratio of Pond …

Stabilized with Lime and Phosphogypsum Ambarish Ghosh1 Abstract: Recycling of waste material is one of the effective solutions of its disposal problem. Fly ash produced by coal-based thermal

Phosphogypsum circular economy considerations: A critical …

Nearly 300 million t of phosphogypsum (PG) are produced every year as a byproduct from phosphate fertilizer production worldwide. Approximately 58% of the PG are stacked, 28% are discharged in coastal waters and only 14% are further processed. This critical review provides an overview of the physical-chemical properties of PG produced …

Effect of Modified Phosphogypsum on Properties of …

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 comprehensive utilization of PG, analyzes the existing problems. …