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3 edition of Assessment of Phosphogypsum as A Constituent of Aggregate Material. found in the catalog.

Assessment of Phosphogypsum as A Constituent of Aggregate Material.

United States. Bureau of Mines.

Assessment of Phosphogypsum as A Constituent of Aggregate Material.

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Published by s.n in S.l .
Written in English


Edition Notes

1

SeriesReport of investigations (United States. Bureau of Mines) -- 8939
ContributionsMay, A., Cobble, J., Sweeney, J.
ID Numbers
Open LibraryOL21737964M

DRAFT GUIDANCE Applying for Other Uses of Phosphogypsum: Submitting a Complete Petition 40CFR January 18, Prepared for: Radiation Protection Division Office of Radiation and Indoor Air U.S. Environmental Protection Agency Pennsylvania Avenue, N.W. (J) Washington, DC Prepared by: EC/R Incorporated Quadrangle Drive, Suite Chapel Hill, NC . This paper may be of particular interest to the readers as it provides a new environmental risk assessment system for phosphogypsum tailing dams. In this paper, we studied the phosphogypsum tailing dams which include characteristics of the pollution source, environmental risk characteristics and evaluation requirements to identify the applicable environmental risk assessment methods. Two Cited by: 6. @article{osti_, title = {Sustainable construction: Composite use of tyres and ash in concrete}, author = {Snelson, D.G. and Kinuthia, J.M. and Davies, P.A. and Chang, S.R.}, abstractNote = {An investigation was carried out to establish the physical, mechanical and chemical characteristics of a non-standard (unprocessed) pulverised fuel ash (PFA) and waste tyres from a former landfill.


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Assessment of Phosphogypsum as A Constituent of Aggregate Material. by United States. Bureau of Mines. Download PDF EPUB FB2

ASSESSMENT OF PHOSPHOGYPSUM AS A CONSTITUENT OF AGGREGATE MATERIAL. By A. May, 1 J. Cobble, 1 and J. Sweeney 2. ABSTRACT Florida has accumulated about million tons of phosphogypsum, a mineral process waste generated in the production of fertilizer, and is adding 30 million tons to this annually.

Additional Physical Format: Online version: May, Alexander, Assessment of phosphogypsum as a constituent of aggregate material. [Washington, D.C.]: U.S. Dept. Admixtures of phosphogypsum, fly ash, and lime that could produce a coarse aggregate suitable for road construction were investigated.

Using phosphogypsum with asphalt, cement, cement-kiln dust, silica, clays, and oxychlorides to produce aggregate was also examined. HEAVY METAL ASSESSMENT OF PHOSPHOGYPSUM WASTE STOCKPILE MATERIAL FROM JORDAN1 Al-Hwaiti, M.1, V.

Carney, J. Ranville, and P. Ross Abstract: Phosphogypsum is a waste by-product of the phosphate fertilizer industry. The phosphate industry in Jordan has generated over 40 million tons of. Nov 10,  · Phosphogypsum (PG) is a by-product from the industry of phosphate fertilizer.

• PG can be reused as a construction material. • Including PG in the matrix reduced its workability, density and mechanical strength. • Including PG in the matrix increased its Cited by: PHOSPHOGYPSUM ANALYSIS: TOTAL CONTENT AND EXTRACTABLE ELEMENT CONCENTRATIONS.

Materials Science and Engineering Assessment of phosphogypsum use in a nursery for plant propagation. Phosphogypsum generated from phosphoric acid plants is presently stacked and some quantity is sold to the other industries for beneficial use especially as raw material in cement manufacturing as substitute for mineral gypsum, plaster board manufacturing as well as for alkali soil amendments or re-conditioning.

Jun 19,  · Phosphogypsum: potential uses and problems – a review it must be noted that it is also a critical component in fertilizer production, having a direct impact on.

1 Environmental impact and management of phosphogypsum (Review) Hanan Tayibi1*, Mohamed Choura2, Félix A. López1, Francisco J. Alguacil1 and Aurora López-Delgado1 1National Centre for Metallurgical Research (CENIM), CSIC.

Avda. Gregorio del Amo 8, E Madrid, Spain. Abstract The carbon dioxide (CO 2) sequestration (also referred to as “carbonation”) of alkali-activated materials (AAMs) as potential key components of future sustainable construction industry has been a research focus worldwide.

Apr 08,  · In the overall assessment, it can be concluded that using treated PG in proportions up to % of building materials and other applications will be safe from the radiation protection perspective.

Phosphogypsum (PG) was treated to reduce activity concentrations of Ra, which was found to exceed that permitted by international dixsept.club by: 7. Assessment of phosphogypsum as a constituent of aggregate material / ([Washington, D.C.]: U.S.

Dept. of the Interior, Bureau of Mines, ), by Alexander May, John W. Sweeney, and J. Cobble (page images at HathiTrust) Recovery of sulfur from phosphogypsum: conversion of calcium sulfate to calcium sulfide / (Pgh.

To conveniently discuss common amounts of radioactivity – such as that associated with phosphogypsum – we often talk in terms of picocuries (pCi). A picocurie is one trillionth of a curie. The activity is then related to a given mass or volume of material, such as a liter or a gram, depending on whether the material is liquid, solid or gas.

Phosphogypsum for Secondary Road Construction. Final. Phosphogypsum is a by-product of the phosphate fertilizer industry. Its main constituent is calcium sulfate dihydrate.

According to recent statistics, the phosphate industry in Central Florida annually produces 33 million tons of phosphogypsum and has over million tons stockpiled.

Phosphogypsum is a waste by Jordan has generated over 60 million tons of this waste material. Production continues at the rate of 3 million tons per year.

PG, stockpiled at Eshidiya Mines and. assessment methodologies for evaluating the beneficial use of secondary materials. Example Beneficial Use Determination Framework Red and brown muds are the secondary materials generated from the extraction of alumina from bauxite, an aluminum-containing sedimentary rock.

Phosphogypsum is the secondary material generated. 40 GFR 61 Subpart R National Emission Standards for Radon Emissions from Phosphogypsum Stacks R^ POTENTIAL USES OF PHOSPHOGYPSUM AND ASSOCIATED RISKS BACKGROUND INFORMATION DOCUMENT for 40 CFR 61 Subpart R National Emission Standards for Radon Emissions from Phosphogypsum Stacks Craig Conklin Work Assignment Manager Prepared.

Jan 01,  · The phosphogypsum (PG) sample produced as the waste of the phosphoric acid fertilizer plant from Guizhou, China was studied for its properties and as a material for anhydrite cement.

The impurity content, type and distribution, as well as thermal behavior and solubility of the PG were carefully studied by XRD, DTA techniques and gravimetric dixsept.club by: 3. As previously noted, phosphogypsum is a damp, powdery, silt or silty-sand material with a maximum size range between approximately mm (No.

40 sieve) and mm (No. 20 sieve) and between 50 and 75 percent passing a mm (No. ) sieve size. produced aggregate when fired at 1,° C. Their compressive strengths exceeded 1, psi. Mixtures containing a maximum of 50 percent phosphogypsum, 6 to 10 percent lime and the remainder fly ash had compressive strengths as high as 4, psi.

The effects of the amounts of phosphogypsum, lime and fly ash were investigated. Also,the effects of fly. The output of waste materials suitable as cement replacement (slags, fly ashes, silica fumes, rice husk ash, etc.) is more than double that of cement production.

These waste materials can partly be used, or processed, to produce materials suitable as aggregates or fillers in concrete. SUMMARY OF THE ENVIRONMENTAL IMPACT ASSESSMENT STUDY ON THE PHOSPHOGYPSUM STORAGE 1. INTRODUCTION ELIXIR PRAHOVO INDUSTRY OF CHEMICAL PRODUCTS LTD PRAHOVO is a large chemical complex which used to be well-known for production and processing of.

phosphogypsum to sulfuric acid and aggregate (2). down of the material is given in Table 2. Also, a number of trace elements such as As, Ba, Cd, Cr, Pb, Ag, Hg, and Se are present in the slag aggregate.

Mineralogical and Morphological Analysis Examination of the slag aggregate by X-ray diffraction and. GAQC Web Event: A Basic Background & Overview of State and Local Government Auditing February 13, 2 What We Will Cover Auditing the financial reporting entity, including opinion units Other auditing considerations, including risk assessment and materiality considerations; and Reporting in a state or local government financial.

Evaluate the Mechanical and Durability Properties of Concrete by Using Phosphogypsum and Fly Ash M. Venkata Sandeep scarity of cement making raw materials. Phosphogypsum is a by-product in the wet process for The phosphogypsum slag aggregate based concrete mix was prepared and.

May 01,  · 2. NORM residues used in building materials. To evaluate the radiometric content of residues used in EU a database collecting specific concentration of natural radionuclides in about 10, samples of different building materials, built up during the last years by some of the authors, was used.

This database contains information of about Cited by: Some Guidance on Applying for Approval for Other Uses of Phosphogypsum We refer to the information on this page as “some guidance” in recognition that we will continue to add more guidance in response to your questions about how to apply for approval of other uses for phosphogypsum.

(13). The uses of these materials include: 1. Aggregate for asphaltic concrete and portland cement concrete, 2. Material for the construction of highways and streets, 3.

Material for pipe bedding, and 4. Material for load-bearing surfaces. While phosphogypsum does not present a viable alter­. The physico-chemical characterization of Brazilian phosphogypsum showed that some phosphogypsum, the group 2, may be used as building materials.

The thoron levels are high in Brazilian phosphogypsum. A pervious concrete with carbonated ground steel slag powder as binder and crushed steel slag as aggregate was prepared, which provided the key material for construction of sponge city and explored a new approach to massively utilize steel dixsept.club: Weiguo Shen, Weiguo Shen, Yi Liu, Miaomiao Wu, Miaomiao Wu, Di Zhang, Di Zhang, Xuejian Du, Xuejian.

28 TRANSPORTATION RESEARCH RECORD Use of By-Product Phosphogypsum Road Construction In • RAMZI TAHA, ROGER K. SEALS, MARTY E. TITTLEBAUM, WILLIS THORNSBERRY, JR., AND JAMES T. HOUSTON Phosphogyp um i a solid by-product material resulting from the. «Back. Use of Florida Phosphogypsum in Synthetic Construction Aggregate.

Final. In its role to provide technology to promote the efficient use of minerals and mineral process waste, the U.S. Bureau of Mines has conducted research to identify and develop high volume uses for phosphogypsum. "Florida has accumulated about million tons of phosphogypsum, a mineral process waste generated in the production of fertilizer, and is adding 30 million tons to this annually.

To minimize storage of this waste and reduce potential environmental Author: L.Y. Sadler, H. Heystek, N.S. Raymon, T.A. Clancy. Use of phosphogypsum in road construction.

Life Cycle Assessment of Alternative Road Base Materials: the Case of Phosphogypsum The solid waste phosphogypsum (PG), as the sole-raw material. Description: "Ten to twelve million tons of dust is produced by cement kilns annually in the United States, resulting in a serious waste disposal problem.

The Bureau of Mines investigated two alkali volatilization methods for converting this dust into materials for making portland cement and a useful potassium product. Agricultural Uses of Phosphogypsum, Gypsum, and Other Industrial Byproducts Phosphogypsum material normally has an aqueous pH between and One problem with using Composition of phosphogypsum Major constituents (g kg-1)*: Ca – P 1–5 S – F 5– Phosphogypsum refers to the calcium sulfate hydrate formed as a by-product of the production of fertilizer from phosphate rock.

It is mainly composed of gypsum (CaSO 4 ·2H 2 O). Although gypsum is a widely used material in the construction industry, phosphogypsum is usually not used, but is stored indefinitely because of its weak radioactivity. Get this from a library. Environmental testing and evaluation of stabilized wastes, performance of stabilized materials and new aggregate tests.

[National Research Council (U.S.). Transportation Research Board.; National Research Council (U.S.). Transportation Research Board. Committee on Cementitious Stabilization.; National Research Council (U.S.).

The Bureau of Mines investigated two alkali volatilization methods for converting this dust into materials for making portland cement and a useful potassium product.

Portland cement kiln dust was found to be composed of finely ground cement raw materials (caco3 and. Preparation of an Application for Approval to Use Stabilized Phosphogypsum as a Fill Material for Coastal Protection Devices. Kelly A.

Rusch and Roger K. Seals with Maria Teresa Gutierrez-Wing, Louisiana State University. material is developed the important question of product demand remains an open one. The study of a new product demand can start by determining what traditional products substitute for recycled materials.

Recycled phosphogypsum based materials are believed to be substitutes for traditional construction material such asAuthor: Alicia Norma Rambaldi.Zmelma R., Naifer I., Benjdidia M., Elleuch B. () Recycling of Tunisian Phosphogypsum as Road Material: Assessment of the Mechanical and Leaching Behavior.

In: Kallel A., Ksibi M., Ben Dhia H., Khélifi N. (eds) Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding dixsept.club: Raja Zmelma, Ikram Naifer, Mounir Benjdidia, Boubaker Elleuch.Production of Beneficiated Phosphogypsum for Cement Manufacture Raw Materials Phosphogypsum samples were procured from Coromandal Fertilizer Ltd, Visakhapatnam (Andhra Pradesh) and Southern Petrochemical Industries for their chemical constituents as per standard test procedures (Table 1).