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  • Experimental Study on the Concrete with Compound

     · Here the S95 slag powder is used with the density of 2.8 g/cm 3 the specific surface area of 485 m 2 /kg and the water requirement ratio of 96.2 . All the indexes are in accordance with the national standard. The coarse aggregate is divided into big stone and small stone and the diameters are 10–20 mm for big stone and 5–10 mm for small stone The ratio of big stone to small stone is 8

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  • Pharmaceutical Physical Characterization Surface Area

    the system will have a greater surface area relative to equivalent weights of samples with larger particle size. A larger surface area provides a better polymer-water contact thus enhancing the rate of excipient polymer hydration and overall performance. A good understanding of both particle size and surface area

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  • STUDY ON CEMENTITIOUS PROPERTIES OF STEEL SLAG

     · Converter slag of different components were grounded to obtain a powder with specific surface area over 400m2/kg making them to take place some part of the cement in the concrete as the admixture and carry out the standard tests. The results indicate that the converter slag can be used as cementitious materials for construction.

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  • Effect of superfine slag powder on cement properties

     · The degrees of hydration of slag powders with specific surface area ranging from 300 to 800m 2 /kg were calculated to illustrate the enhancement of pozzolanic effect. As an examination of the analysis blended cement mortars and pastes incorporating superfine slag powder were tested for strength and mercury intrusion respectively.

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  • Has anyone used Blaine test to measure the fineness of

    Specific surface of various materials like cement fly ash more than 200 pharma powder food powders like spices metal powders were measured.. 7. estimated amount of fly ash in cement 8.

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  • (PDF) Application of Steel Slag Powder to Enhance the Low

    size steel slag powder can better increase the ductile fracture. resistant performance than larger particle size. This may be tougher surface texture and higher specific surface area

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  • General Chapters <846> SPECIFIC SURFACE AREA

     · The specific surface area of a powder is determined by physical adsorption of a gas on the surface of the solid and by calculating the amount of adsorbate gas corresponding to a monomolecular layer on the surface. Physical adsorption results from relatively weak forces (van der Waals forces) between the adsorbate gas molecules and the adsorbent

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  • Experimental Study on the Concrete with Compound

     · Here the S95 slag powder is used with the density of 2.8 g/cm 3 the specific surface area of 485 m 2 /kg and the water requirement ratio of 96.2 . All the indexes are in accordance with the national standard. The coarse aggregate is divided into big stone and small stone and the diameters are 10–20 mm for big stone and 5–10 mm for small stone The ratio of big stone to small stone is 8

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  • Powder Surface Area and Porosity by Lowell and Shields

     · Powder Surface Area and Porosity by Lowell and Shields 3rd edition I. Introduction 1.1. Real Surfaces. S = 6 . l. 2. S = 4. π. r. 2. Theoretical (geometric) area. Surface

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  • INFLUENCE OF SPECIFIC SURFACE AREA AND CALCIUM

    This paper describes the influence of the specific surface area of blast-furnace slag and the existence of calcium sulfate in blast-furnace slag on the effect of calcium hydroxide powder which is considered to accelerate the reaction of blast-furnace slag in cement containing blast-furnace slag for the purpose of improving a characteristic of cement containing blast-furnace slag in order to

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  • Influence of Ground Phosphorous Slag Powder on

    With GPS dosage of 30 the 28-day strength of cement mortar grew with the increase of specific surface area of GPS within the dosage of 0 50 as the dosage rose 28-day strength of cement mortar first went up and then down reaching the peak at 30 .

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  • Effect of superfine slag powder on cement properties

    The hydration rate of the cement paste with P1000 superfine slag powder (measured specific area 1885 m2/kg) is so quick that the secondary hydration reaction can be completed basically just in 3

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  • Increase in the Specific Surface Area of Budesonide During

    Purpose. To evaluate an anomalous increase in the specific surface area of budesonide during storage postmicronization. Methods. Budesonide was micronized using a conventional air-jet mill. Surface areas and total pore volumes were measured using nitrogen sorption. Porosity was measured using mercury intrusion porosimetry. Particle size was measured using laser diffraction. Results. Budesonide

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  • Influence of different localities phosphorous slag powder

    When the specimens contained same phosphorous slag powder the dissolution rate and dissolved quantity increased with the increase of the specific surface area. And the setting time also increased

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  • 11/22/2016 30(4) Harmonization <846> SPECIFIC

     · diluent gas which is not adsorbed under the recommended conditions. For powder samples of surface area less than about 0.3 m 2 (or of specific surface area less than about 0.5 m 2 g 1) krypton is the preferred adsorbate gas while for samples of greater surface area nitrogen is preferred.

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  • STUDYING THE EFFECT OF STEEL SLAG POWDER ON

     · iron slag in hot mix asphalt as a replacement of fi ne aggregates. Having a good friction resistance property it is believed that it can prov ide an excellent skid resistance asphalt concrete layer surface. The current study is performed to st udy the effect of using iron slag powder in hot mix asphalt as a part of the fine aggregate.

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  • Application of steel slag powder to enhance the low

     · Furthermore tougher surface texture and higher specific surface area of larger particle steel slag also can cause to absorb more asphaltene. (2) From the CTOD master curve of asphalt mastic it is evident that the CTOD of two kinds of steel slag powder systems are much higher than that of the limestone powder mastic system when they tested at

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  • Surface etching and early age hydration mechanisms of

    Dry chemical etching technology was employed to modify the surface of steel slag powder (SS) with formic acid (FC) aiming to improve the early-age hydraulic ability and soundness of SS as supplementary cementitious material (SCM).

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  • Changes in Zero Point of Charge (ZPC) Specific Surface

     · Changes in Zero Point of Charge (ZPC) Specific Surface Area (SSA) and Cation Exchange Capacity (CEC) of Kaolinite and Montmorillonite and Strongly an increase in the specific surface area (SSA) and a decrease in CEC whereas A1 coatings X-ray diffractograms of the Na-saturated powder samples were taken for all the samples

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  • Fly Ash Slag Silica Fume and Natural Pozzolans Chapter 3

     · rial which is ground to less than 45 microns has a surface area fineness of about 400 to 600 m 2/kg Blaine. The relative density (specific gravity) for ground granulated blast-furnace slag is in the range of 2.85 to 2.95. The bulk density varies from 1050 to 1375 kg/m3 (66 to 86 lb/ft3). The rough and angular-shaped ground slag (Fig. 3-6)

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  • INVESTIGATION ON THE EFFECT OF SLAG AND

     · specific surface area of 2230 m 2/kg and more than 90 of particles are finer than 2 µm. The granulated blast furnace slag used has a specific surface area of 490 m 2/kg and a specific density of 2.70 g/cm 3. Limestone powder with a D(0.5) of 5 µm and specific surface area of 1100 m2/kg was used.

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  • Evaluation of phosphorus slag (PS) content and particle

    The increase of the specific surface area of PSP provided better modification effect. Abstract To evaluate the modification effect of phosphorus slag powder (PSP) on the rheological performance of asphalt five types of PSP with different particle sizes and different content were

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  • Influence of the characteristics of steel slag powder

    Download Citation Influence of the characteristics of steel slag powder particle on compressive strength of reactive powder concrete The influence of specific surface area of steel slag powder

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  • Influence of Steel Slag Powder with Different Specific

    Some properties of concrete added steel slag powder with different specific surface area were studied in this paper. The property and microstructure of the concrete were investigated by strength test XRD and SEM. The results indicate that the compressive strength increases firstly and then decreases with increase of the specific surface area of steel slag powder.

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  • Study on the Preparation of High Performance Concrete

    Then in accordance with GB Testing method for specific surface of cement-Blaine method the specific surface area of the BCM and SS powder was measured to be 558 m 2

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  • Research of the Effect of Different Dosage of Grinding

    slag powder were studied. The results show that the specific surface area of steel slag powder is higer or lower the fluidity and the activity index increased the energy consumption of ball mill is reduced the energy consumption of elevator and separator increased.

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  • STUDY ON CEMENTITIOUS PROPERTIES OF STEEL SLAG

     · Converter slag of different components were grounded to obtain a powder with specific surface area over 400m2/kg making them to take place some part of the cement in the concrete as the admixture and carry out the standard tests. The results indicate that the converter slag can be used as cementitious materials for construction.

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  • Specific Surface Area Measurement for Pharmaceutical

     · Surface area measurements are crucial for pharmaceutical materials. There is a change in interactions between particles due to the increased surface area and the subsequent increment in surface energy leading to destabilization of the blend. This in turn results in ineffective blending segregation or demixing which are the key reasons of

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  • Influence of Ground Phosphorous Slag Powder on

    Comparing the activity of ground phosphorous slag (GPS) from five different areas in Sichuan province the effects of fineness and content of GPS on cement mortar strength were studied. The results showed that all GPS produced in Sichuan complied with GB/T26751 and JC/T317 for activity requirements. With GPS dosage of 30 the 28-day strength of cement mortar grew with the increase of specific

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  • The Influence of Slag Particle Size Distribution to the

    In early age of hydration following increase of dry powder packing density specific surface area of pores in cement stone obviously increase however average pore diameter remarkably decrease. In the meantime quantity of the pore (>50nm) damaging the strength of cement stone are decreased with increase of the gel tenuous pore (<50nm) quantity.

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  • Effect of ground steel slag powder on cement properties

    The experimental results show that the influence of steel slag powder on water requirement of normal consistency of cement is in relation to its specific surface area and the value of decreases

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  • Materials Free Full-Text The Effect of Fineness on the

    With the increase of the specific surface area of granulated blast furnace slag the diffraction peak of Ca(OH) 2 decreases gradually. With the adding of GGBS the content of Ca(OH) 2 in paste decreases obviously and with the increase of specific surface area of GGBS the content of Ca(OH) 2 in paste decreases gradually.

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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 different amounts and particle sizes on the hydration and hardening properties of blended cement were studied from hydration heat

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  • Evaluation of phosphorus slag (PS) content and particle

    The increase of the specific surface area of PSP provided better modification effect. Abstract To evaluate the modification effect of phosphorus slag powder (PSP) on the rheological performance of asphalt five types of PSP with different particle sizes and different content were prepared and added into the AH-70 base asphalt.

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  • Study on the Properties of High-Performance Ground Iron

     · The specific surface area of the powder were determined according to Chinese National Standard Method of specific surface area of cement (GB/T ). According to the Chinese National Standard of Ground Iron and Steel Slag (GB/T ) the SS and GGBFS are compounded to prepare GISS.

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  • Specific surface area increase during cellulose nanofiber

     · A specific surface area of 430 m 2 g-1 corresponds to an average lateral size of 5 nm (Svensson et al. 2013) indicating that the fibers were almost fully fibrillated after the 11 MWH ton-1 treatment however both the nanofiber yield measured by centrifugation and transmittance continued to increase with additional energy input beyond this

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  • Improvement of Physical Properties by Increase of Specific

    Effect of the surface microstructure of potato starch on its various physical properties was investigated by using starch gel powder of different spec Improvement of Physical Properties by Increase of Specific Surface Area of Starch Gel Powder

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