Caesium sorption by hydrated cement as a function of ...

Jan 01, 2006· To provide reliable K d data for Cs required for the performance assessment of cement-based radioactive waste repositories, two complementary approaches were followed. First, Cs sorption was determined on a range of hydrated cement paste (HCP) and mortar samples of CEM I and CEM V for different degradation states and solution compositions, as well as on some single mineral phases.

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Prosthetic-Driven Treatment Plan: Thoughtful Choices ...

Nov 01, 2019· Remaining cement was cleaned off the abutments (Figure 11), and the FPD was tried in for evaluation. Using retractors first, the patient was shown the retracted view, followed by a full-face view, for acceptance of the definitive restoration. With the …

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Application and Clinical Effectiveness of Antibiotic ...

cement (ALBC) on the defect resulting from the surgical debridement of necrotized tissues to treat diabetic foot infec-tion. We found that the application of antibiotic-loaded bone cement in the treatment of DFU could achieve a satis-fying medical outcome. 2. Methods and Subjects 2.1. Study Design and Study Population. This is a random-

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Review Article Mechanical Properties of Polymer Concrete

concrete is reported to yield better mechanical properties as well as reduced water absorption [ ]. Addition of y ash also improves the workability of fresh polymer concrete mix resulting in products with excellent surface nish [ ]. Studies have shown that small size of spherical particles also

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Manufacturing - Skyway Cement

Manufacturing Skyway Cement requires two basic processes, granulation and grinding. This process transforms molten slag into granules. Skyway Cement receives granulated slag from a US steel manufacturer in Gary, Indiana. In the blast furnace at the steel works, slag is produced when the mineral components of the metal refining process separate ...

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Dry Granulation of Blast Furnace Slag - Steel360

Apr 04, 2019· Dry Granulation of Blast Furnace Slag. Liquid slag produced in a blast furnace (BF)is at a temperature of around 1500?C and has a sensible heat of around 400Mcal/ton. BF slag is rich in CaO, SiO2, Al2O3, and MgO which are similar to the components of Portland cement. When this liquid BF slag is cooled fast enough then the solidified slag has a ...

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A novel capsule by poly (ethylene glycol) granulation for ...

Jul 01, 2020· 1. Introduction. Concrete is widely used in civil engineering due to its low cost, proper strength and good durability. However, concrete is prone to crack under tensile stress resulted from external loading, shrinkage, temperature gradients and expansive reactions, etc. [], causing a reduction in strength [] and long-term performances [].To prolong the service life of concrete, concrete ...

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CN103320626A - Method and system for recovering lithium ...

The invention discloses a method for recovering lithium, rubidium and/or cesium from lepidolite. The method is characterized by comprising the following steps of: transforming lithium, rubidium and cesium into soluble sulfate from insoluble aluminosilicate by performing ball milling and roasting on lepidolite; leaching lithium, rubidium and cesium into leachate from a roasted material by ...

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COMPOSITIONAL ANALYSIS OF CERIUM AND CESIUM IN …

CESIUM IN RAPID SETTING CEMENT AS AN IMMOBILIZATION AGENT FOR NUCLEAR WASTE . A Dissertation Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy at Virginia Commonwealth University By Riyadh Monowr Motny

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Industrial Solutions UFT Fluid Bed Granulation

granulation. Full flexibility for maximum success The UFT fluid granulation process can pro - duce all required product sizes (2–8 mm) in the same plant with only minimal adjust - ments. The urea granules are well rounded, very hard, and ultra-resistant to crushing and abrasion. Consequently the urea gran - ules remain dust-free, non-caking and

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Diffusion of Chloride and Cesium Ions in Portland Cement ...

The American Concrete Institute. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design ...

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Alginate: properties and biomedical applications

2.2. Molecular weight and solubility. The molecular weight of commercially available sodium alginates range between 32,000 and 400,000 g/mol. The parameters of the Mark-Houwink relationship ([η] = KM v a) for sodium alginate in 0.1 M NaCl solution at 25°C are K = 2×10 −3 and a = 0.97, where [η] is intrinsic viscosity (mL/g) and M v is the viscosity-average molecular weight (g/mol) [].

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Xujiang Wang's research works | Shandong University, Jinan ...

Xujiang Wang. Jingwei Li. Wenlong Wang. This paper investigated the effects of different proportions of Portland cement addition (0–20%) on the setting time and early-age strength of solid-waste ...

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(PDF) Cement plant operation handbook | jorge pinedo ...

Cement plant operation handbook. Jorge Pinedo Sanchez. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. Read Paper.

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mcs2020.pdf - Mineral Commodity Summaries 2020

Cement Cesium Chromium Clays Cobalt Copper Diamond Diatomite Feldspar. Cover: Minerals play an integral part in all aspects of our lives. In this rural setting, minerals provide nutrients, such as nitrogen, phosphorus, potassium, and a host of micronutrients essential to …

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Cementitious Solutions | Offering Strategic & Technical ...

Cementitious Solutions. Expertise in value added sustainable products (based on fly ash and slag) Cementitious Solutions has been established to provide a service to organisations associated with the building materials sector and seeking to explore more environmentally acceptable or value added strategies for their products.

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SIT - WTCR

SIT (2018) were undergraduate students and were participating in the research activities of our team. During their project, they explored the new type cement made from coal gangue, which aimed to reduce carbon emissions in cement preparation and utilize the waste of coal production. This project began in 2018 and ended in the second half of 2019.

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Diffusion and sorption of cesium, strontium, and iodine in ...

@article{osti_6982185, title = {Diffusion and sorption of cesium, strontium, and iodine in water-saturated cement}, author = {Atkinson, A and Nickerson, A K}, abstractNote = {Diffusion and sorption in cementitious materials are important factors influencing radionuclide migration in radioactive waste disposal. Four different experimental techniques have been used to study these processes for ...

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An Industry Average Environmental Product Declaration for ...

• Iron blast furnace slag granulation, slag cement manufacture and distribution terminal operations. These data were collected from 21 SCA member facilities from three discrete regions (East, Midwest, and West NA), to represent the US and Canadian industry average geographic mix. These 21 facilities (3 granulating, 12 grinding and

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Self-healing of early-age cracks in cement mortars with ...

Cracking seriously affects the functionality and durability of the concrete structure. Therefore, the development of robust self-healing concrete is important to extend the service life of the structure. In this study, artificial functional aggregates with fly ash, silica fume, metakaolin, limestone powder and sodium carbonate powder were designed and prepared by the powder granulation ...

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  • 24th March 2021

Radiotracers and Nucleonic Control Systems Applied in ...

Share and Cite: Chmielewski, A., Smoliński, T. and Rogowski, M. (2019) Radiotracers and Nucleonic Control Systems Applied in Industry—Polish Case. World Journal of Nuclear Science and Technology, 9, 27-66. doi: 10.4236/wjnst.2019.92003 . 1. Introduction. First application of nuclear techniques in Poland was reported nearly 45 years ago, and ...

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(PDF) Blast furnace slag obtained from dry granulation ...

Water quenching slag and dry granulation slag were ground by. ball milling for 35 min each, and were then mixed with the clinker. In the present work, three cement paste systems were investi ...

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Block for containing and storing radioactive waste and ...

Treatment by cement is a method which is simple and inexpensive to carry out. However, the confinement quality is not very satisfactory when the coated product contains radioactive elements such as cesium or strontium. Industrial water leaching resistance tests have revealed that the leaching rate of such radioactive elements is high.

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Characterization of two types of cesium-bearing ...

Jul 21, 2020· Among the emitted radionuclides, cesium-137 (137 Cs, T 1/2 = 30.2 y) has been widely studied because of its long half-life and its large amount emitted to the environment.

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Ground granulated blast-furnace slag - Wikipedia

Ground-granulated blast-furnace slag (GGBS or GGBFS) is obtained by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder.Ground-granulated blast furnace slag is highly cementitious and high in CSH (calcium silicate hydrates) which is a strength enhancing ...

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The extrusion of root canal cement containing ...

However, after 3.5 months, the patient returned with an acute infection in the same region. After resolution of the acute abscess and root canal retreatment, surgical treatment was performed under general anaesthesia. Granulation tissue and necrotic bone were found associated with the cement.

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Cesium and Strontium Immobilization in Portland Cement ...

May 25, 2017· The effect of incorporation of pozzolanic additives on the immobilization of cesium and strontium ions in cementitious pastes was investigated. Pastes containing Portland cement together with ground granulated blast furnace slag (GGBFS) (50%, 75%), metakaolin (MK) (10%, 20%), or silica fume (SF) (20%), either in its densified or raw form, were ...

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A case study of cesium sorption onto concrete materials ...

Jun 01, 2019· This suggests that for contaminated concrete waste and demolition debris, the cesium residing in the cement phases would be largely leachable in fresh or salty waters. Moreover, cesium found on the aggregate phases would be leachable, although to a much lesser extent. 3.6.2. Ammonium-based wash solutions

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Calcium silicate - Wikipedia

Properties. Calcium silicate is a white free-flowing powder. It can be derived from naturally occurring limestone and diatomaceous earth, a siliceous sedimentary rock. [citation needed] It is one of a group of compounds that can be produced by reacting calcium oxide and silica in various ratios e.g. 3CaO·SiO 2, Ca 3 SiO 5; 2CaO·SiO 2, Ca 2 SiO 4; 3CaO·2SiO 2, Ca 3 Si 2 O 7 and CaO·SiO 2 ...

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(PDF) FORMULATION AND EVALUATION ASPECTS OF TABLETS …

Dry granulation is simpler than wet granulation, therefore the cost is reduced. This process is often used when the product 69 Parashar et al., American Journal of PharmTech Research. 2012; 2(1) ISSN: 2249-3387 to be granulated is sensitive to moisture and heat.

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Granulation techniques and technologies: recent progresses

Feb 18, 2015· Introduction. Granulation, a technique of particle enlargement by agglomeration, is one of the most significant unit operations in the production of pharmaceutical dosage forms, mostly tablets and capsules. 1 During the granulation process, small fine or coarse particles are converted into large agglomerates called granules. Generally, granulation commences after initial dry mixing of the ...

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Composition of cement - Penn State College of Engineering

Composition of cement. Introduction Portland cement gets its strength from chemical reactions between the cement and water. The process is known as hydration.This is a complex process that is best understood by first understanding the chemical composition of cement.

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JFE Steel Corporation - Slag - Blast-furnace cement

Planning Department, Iron and Steel Division JFE Mineral Company, Ltd. TEL : +81-3-5445-5213 FAX : +81-3-5445-5222

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Microstructure Change of Nanosilica–Cement Composites ...

May 14, 2020· Materials and Mix Proportions. P.O 42.5 ordinary Portland cement with a specific gravity of 3.12 g/cm 3 was used in this study; its chemical composition is given in Table 1.Fine aggregate with a specific gravity of 2.65 g/cm 3 and a fineness modulus of 2.70 was used. The average particle size of colloidal nanosilica was 10 nm (Fig. 1), the specific surface area was 954.3 m 2 /g, and the SiO 2 ...

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Dry Granulation | Products & Suppliers | Engineering360

Like water granulation of slags, dry granulation could convert the vast quantity of BF slag pro- duced globally (*400 Mt/year) into feedstock for cement and concrete production thus resulting in further reduction in the GHG emissions by the cement industry [17].

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Design and Operation of Dry Slag Granulation Pilot Plant ...

Feb 22, 2019· Steel and cement are critical materials for our society and two of the highest volume materials produced. However, both are significant contributors to global CO 2 emissions; together they accounted for 15% of global anthropogenic CO 2 emissions in 2012 [].. Slag is a byproduct of iron and steelmaking, with 250–300 kg of slag produced for every tonne of iron.

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Current Concepts in Knee Replacement: Complications ...

An aseptic foreign body granulomatous reaction ensues, and the regions of osteolysis are filled with granulation tissue with phagocytosed particulate debris. Particles of bone cement, polyethylene, metal, and ceramic have all been implicated in this process . Osteolysis is one of the leading causes of late reoperations on patients who undergo TKA.

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