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  • Materials Free Full-Text Effects of Steel Slag Powder

    In view of the performance requirements of mass ultra-high performance concrete (UHPC) for the Pang Gong bridge steel cable tower in China the UHPC incorporating of steel slag powder and hybrid expansive agents is optimized and prepared. The effects of steel slag powder and hybrid expansive agents on the hydration characteristics and persistent shrinkage of UHPC are investigated.

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  • ETP sludge as filler and the role of AOD slag GBFS in

     · ETP sludge as filler and the role of AOD slag GBFS in fly ash–slag–sludge blended geopolymer 380 Copright 2018 ingh et Citation Singh JP Sinha DK Kumar S et al. ETP sludge as filler and the role of AOD slag GBFS in fly ash–slag–sludge blended geopolymer.MOJ Civil Eng.

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  • The Role of Preliminary Mechanical Activation in the

     · The Role of Preliminary Mechanical Activation in the Process of Obtaining Powder-Like Ferrosilicium from Metallurgical Slags Keywords Mechanochemical Activation Copper Concentrate Silicon Concentrate Slag Grinding Vibromill Aluminothermic Reduction

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  • XRD/Rietveld Analysis of the Hydration and Strength

    Slag can increase late age strength of concrete but impairs the concrete early-age strength due to low reactivity. Limestone powder can increase early-age strength but impairs late-age strength

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  • The Role of Various Powders during the Hydration Process

    Abstract

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  • The role of recycled waste glass incorporation on the

    This study investigates the influences of recycled waste glass powder (RGP) on the carbonation behaviour of sodium carbonate activated ground granulated blast furnace slag (GGBS) mortars. The effect of activator dosages types and RGP addition on resistance to carbonation are evaluated.

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  • A Novel Modeling Method of Slag Foaming in BOF

     · The slag foaming is a complex dynamic process which plays an important role during the BOF steelmaking process. The moderate level of slag foaming is beneficial to improve the kinetic conditions of chemical reactions smelting efficiency and energy utilization efficiency. However insufficient or excessive level of slag foaming might deteriorate the smelting effect possibly causing

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  • Kinetic Study of the Devitrification of Mold Powder Slags

     · Powder Slags Due to the rapid cooling of the slag infiltrated into the mold-strand gap it is expected that the rate of devitrification of the glass formed plays a key role in determining the proportion of crystalline phases influencing mold heat transfer. In this investigation a novel procedure to calculate Time-Temperature-

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  • Investigation on the Role of Steel Slag Powder in Blended

     · To clarify the role of steel slag powder in blended cement steel slag powders with different amounts and particle sizes were mixed into blended cement and the inert quartz powder was selected as the reference. The influences of steel slag powder with

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  • (PDF) Investigation on the Role of Steel Slag Powder in

    To clarify the role of steel slag powder in blended cement steel slag powders with different amounts and particle sizes were mixed into blended cement and the inert quartz powder was selected as

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  • UNDERSTANDING THE ROLE OF MOULD SLAG AND

     · that affect slag infiltration and conditions in the mould-strand gap resulting from the properties of the slag film. Industrial trials and laboratory studies involving the characterisation of mould powder behaviour slag films slag rims and surfa-ce quality are

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  • The Role of Supplementary Cementitious Materials

     · High Slag 6 3. Effect of SCMs on Material Properties of UHPC 3.1. Slag Slag is the by-product in pig iron steel lithium carbonate phosphor or copper plants and their primary oxide components are CaO SiO2 and Al2O3 although the proportions are not the same among different sources 72 . The effects of slag on UHPC compressive

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  • Recycling and utilization of high volume converter steel

     · The main oxides in steel slag are CaO SiO 2 and Fe 2 O 3 and the detected mineral phases are larnite brownmillerite wuestite and magnetite the latter three being Fe-related minerals consistent with the high content of Fe 2 O 3 (31.35 in Table 1) in steel slag.. The particle sizes of cement quartz powder and milled slags were measured using laser granulometry (Master sizer 2000) and

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  • SELF-COMPACTING CONCRETE THE ROLE OF THE

     · theory and some mortar tests 3 . The total powder content (cement plus limestone powder) amounts 473 kg/m3 to 499 kg/m3 only. In Figures 3 and 4 the PSD (cumulative finer) of the three mixes are given. In both figures also the curves following the A A grading the modified A A grading and the Fuller grading are included.

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  • Modification of steel slag powder by mineral admixture

     · The mix ratios of the former two groups cement with steel slag powder alone or with a compound admixture of GGBFS-steel slag powder were in Tables 3 and 4 Table 3 the cement paste samples of S0 S10 S20 S30 S40 and S50 were prepared in which cement was replaced by unmodified steel slag powder from 0 to 50 respectively the second group (Table 4) a compound

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  • Applications of Steel Slag Powder and Steel Slag

     · The applications of steel slag powder and steel slag aggregate in ultra-high performance concrete (UHPC) were investigated by determining the fluidity nonevaporable water content and pore structure of paste and the compressive strength of concrete and by observing the morphologies of hardened paste and the concrete fracture surface. The results show that the fluidity of the paste

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  • What Are the Uses of Blast Furnace Slag (BFS) FTM

     · The value of the specific surface area of the slag powder produced by our factory can be control from 420 to 450m 2 /kg and the average specific surface area 402m 2 /kg. The output of the ball mill is 6.5 t/h reaching the average hourly output with the

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  • The Role of Supplementary Cementitious Materials

    classified as slag fly ash limestone powder metakaolin and others. The effects of each SCM are discussed mainly on the early age compressive strength the late age compressive strength the

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  • (PDF) Mould Powder Requirements for High-speed Casting

    Abstract and Figures Mould powders play an important role in the stability of the continuous casting process of steel. The main functions of mould slag (i.e. molten powder)

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  • The Role of Sodium During the Hydration of Alkali

    This paper presents the results of an investigation into the role of sodium cations during the hydration of alkali-activated slag (AAS). This subject was studied by a combination of powder X-ray

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  • The role of recycled waste glass incorporation on the

    N2This study investigates the influences of recycled waste glass powder (RGP) on the carbonation behaviour of sodium carbonate activated ground granulated blast furnace slag (GGBS) mortars. The effect of activator dosages types and RGP addition on resistance to carbonation are evaluated.

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  • Effects of Steel Slag Powder and Expansive Agent on the

     · The effects of steel slag powder and hybrid expansive agents on the hydration characteristics and persistent shrinkage of UHPC are investigated. The results indicate that 15 wt. steel slag powder and 5 wt. hybrid expansive agents can effectively reduce the drying shrinkage deformation of UHPC with a slight decrease of strength.

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  • The Role Of Ferrosilicon SlagNewsLuoyang Hongfeng

    The Role Of Ferrosilicon SlagJan 10 2021After the ferrosilicon waste slag is put into the molten steel the silicon element in it can quickly separate the oxygen in the molten steel from the effect of improving the quality of the finished steel.

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  • Particle characteristics and hydration activity of ground

    To clarify the role of steel slag powder in blended cement steel slag powders with different amounts and particle sizes were mixed into blended cement and the inert quartz powder was selected as

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  • Kinetic Study of the Devitrification of Mold Powder Slags

     · of mold powder slags as done by Meng et al.17 become very critical for their design and selection in demanding processes such as high-speed thin slab casting.21-23 From the previous review it is seen that devitrification plays an essential role in the formation of crystalline phases in the solid slag layer located between the strand and the mold.

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  • Investigation on the Role of Steel Slag Powder in Blended

     · The influences of steel slag powder with different amounts and particle sizes on the hydration and hardening properties of blended cement were studied from hydration heat nonevaporable water content porosity hydration products and strength.

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  • Investigation on the Role of Steel Slag Powder in Blended

     · In order to better use the steel slag powder as supplementary cementitious material it is necessary to reveal the role of the steel slag powder with different amounts or particle sizes in blended cement so as to guide the blended cement containing the steel slag powder to obtain good comprehensive performance.

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  • A Novel Modeling Method of Slag Foaming in BOF

     · The slag foaming is a complex dynamic process which plays an important role during the BOF steelmaking process. The moderate level of slag foaming is beneficial to improve the kinetic conditions of chemical reactions 1 smelting efficiency and energy utilization efficiency. 2

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  • SELF-COMPACTING CONCRETE THE ROLE OF THE

     · theory and some mortar tests 3 . The total powder content (cement plus limestone powder) amounts 473 kg/m3 to 499 kg/m3 only. In Figures 3 and 4 the PSD (cumulative finer) of the three mixes are given. In both figures also the curves following the A A grading the modified A A grading and the Fuller grading are included.

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  • Viscous behaviour of CaO-SiO2-Al2O3-MgO-FeO slag

     · All of the slag samples were prepared using reagent-grade chemicals. In order to measure viscosity of slag 120 g of mixed powder comprising each component was held in Pt-10 percent Rh crucible. The crucible containing slag sample was placed inside the reaction chamber maintained in an Ar (0.35 L/min) atmosphere at 1723 K. The slag sample was

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  • The Influence of Slag on Reducing Concrete Pavement

     · This work will discuss the role of slag and its role in the reduction or mitigation of joint damage. –Uses powder with CaCl2 –Notice heat flow peaks at various phase formations (Monicalet al. 2015)-80-60 -40-20 0 20 40 60-0.08-0.06-0.04-0.02 0.00 Heat flow (W/g)

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  • Effect of blast furnace slag powder on compressive

     · The results obtained from compressive strength tests conducted on concrete containing OPC and various percen- tage of blast furnace slag powder is comparable to that of con- crete mix without slag powder. On replacement of OPC with 15 blast furnace slag powder the depreciation in 28day compressive strength is being near about 5 . 3.

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  • The role of the alumina content of slag plus the presence

     · Slag B showed comparable levels of portlandite to C 1 for the first 7 days of hydration after which there was a slight deviation as the portlandite content declined in the blend. However for slag C the portlandite content was much lower from a very early stage paired too with further modest consumption as slag hydration progressed.

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  • CORROSION MECHANISMS OF ZIRCONIA/CARBON

     · tion of casting powder but to put in evidence the role of slag properties. According to this concept three slags have been produced having the following characteristics 1. high SiO 2 and MnO activity 2. high SiO 2 3. high CaO activity The complete slag compositions are reported in Tab. 3. The chemical activity of the slags components

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  • Test Research on the Strength of Ni-Fe Slag Powder

    1 T.SriapaiP.SamsriK.Fuenkajorn Effects of loading rate on compressive strength of Maha Sarakham salt Harmonising Rock Engineering and the Environment—Proceedings of the 12th ISRM International Congress on Rock Mechanics 2011 2 SainbaatarHongqiang LiaoGangping MaGuangwei Yu The Influence of Specific Surface Area of Steel Slag Powder on the Properties of Concrete The 8th

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  • The Effect of Calcium Fluoride on Slag Viscosity

     · CaF 2 powder was added to the master slag to achieve the desired CaF 2 concentration. The master slag-CaF 2 mixture was then heated and melted again in the same furnace. In the process a Mo cover was put on the top of the crucible to avoid the extensive volatilization of CaF 2 before it dissolved into the slag. Again the sample was quenched

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  • The role and selection of flux during high carbon

     · The basic flux and slag temperature range from 1983 k to 1373 k so you can melt at low temperatures. 3. Control the viscosity and density of the high carbon manganese iron slag side to effectively separate from the metal thereby reducing the loss of metal in the slag

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  • UNDERSTANDING THE ROLE OF MOULD SLAG AND

    that affect slag infiltration and conditions in the mould-strand gap resulting from the properties of the slag film. Industrial trials and laboratory studies involving the characterisation of mould powder behaviour slag films slag rims and surfa-ce quality are being carried out in order to define operational

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  • ects of Steel Slag Powder and Expansive Agent on the

     · slag powder as a mineral admixture in concrete could improve the workability retard the hydration and decrease the autogenous shrinkage of concrete at early ages 31 . While the addition of steel slag powder tends to have a negative e ect on the

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  • Viscous behaviour of CaO-SiO2-Al2O3-MgO-FeO slag

     · All of the slag samples were prepared using reagent-grade chemicals. In order to measure viscosity of slag 120 g of mixed powder comprising each component was held in Pt-10 percent Rh crucible. The crucible containing slag sample was placed inside the reaction chamber maintained in an Ar (0.35 L/min) atmosphere at 1723 K. The slag sample was

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  • MILLS K.C. FOX A.B. THACKRAY R.P. and LI Z. The

     · slag infiltration (i.e. lubrication of the steel shell) and frequently a depth of >10 mm2 3 is recommended. The depth of the molten pool affects both the amount of liquid slag infiltrating into the mould / strand channel2 3 and the number of inclusions transferred from the steel to the molten slag4. The role of the slag in continuous casting is to

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  • (PDF) The Role of Slag Formation on Late Carbon

    The Role of Slag Formation on Late Carbon Conversion in Entrained Flow Gasification of Coal Fabio Montagnaro1 and Piero Salatino 2 1 Dipartimento di Chimica Università degli Studi di Napoli Federico II Complesso Universitario del Monte di Sant Angelo 80126 Napoli (Italy) 2 Dipartimento di Ingegneria Chimica Università degli Studi di Napoli Federico II Istituto di Ricerche sulla

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