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· The effect of ultrahigh volume ultrafine blast furnace slag on the properties of cement pastes 2018 SCI/EIJA Physico-chemical Characteristics of Wet-milled Ultrafine-granulated Phosphorus Slag as a Supplementary Cementitious Material 2018 SCI2
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· Ultrafine slag. XRD. X-ray diffraction. 1. Introduction. Due to the rapid pace of population growth and industrialisation, the demand for infrastructure is constantly on the rise. Concrete is among the most widely used engineering materials for the construction of infrastructures (Saloni et al., 2021b, Saloni et al., 2021c). Aggregates ...
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The total hydration heat release amount of ultrafine phosphorus slag composite cementitious material is close to pure cement at 120 h. The 3 d and 7 d compressive strength of ultrafine phosphorus slag cement composite cementitious material are equal to that of cement mortar, and the 28 d compressive strength of ultrafine phosphorus slag cement composite cementitious …
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slag, and its volume stability is not qualified [3]. Coal-based swirl combustion reforming furnace is a new type of devices allowing steel slag modification [4, 5]. The operation flow is as follows: pulverized coal and steel slag are first mixed, and then the amount of the mixed are controlled by the screw feeder, which enter into the
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The purpose of the study is to obtain a cement grout with improved performance. The grout mixes of the present study contain cement, ultra-fine slag (UFS), super plasticizer and water. Properties like flowability, bleeding, compressive strength and shrinkage of cement grouts have been studied. Rheological parameters were also studied in order to explain the grout …
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· Ultrafine Alkali Activated Slag (AAS) and Portland/Slag (P/S) cements have been commercially available in the United States for 2 and 5 years, respectively. Ultrafine cements have been the subject of research at Northwestern University for 6 years.Particle size of the ultrafine slag cement is characterized by 98% passing at 7 microns and a D50 at 3 microns in …
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· Ultrafine ground granulated blast furnace slag (UFGGBFS) having material size between 4 to 6 microns, specific surface area 12,000 cm 2 /gm, specific gravity of 2.72 has been used. The chemical composition of UFGGBFS is given in Table 1.
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The chemical composition of the slag used in these cements is 35% SiO 2, 16% Al 2 O 3, and 43% CaO. The composition of the portland/slag cement, which is a 25/75 blend, is therefore between the bulk composition of portland cement and the slag. Both of the ultrafine cements permeate fine sands when formulated at high water-to-cement ratios.
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· Moreover, due to the ultrafine nature of the slag it is capable of gaining high strength at an early age. This will facilitate the use of such binder in several engineering works like roads and RCC building repairing work, where early gain in the strength of mortar/concrete is essential. In addition to this slag is a by-product which is ...
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Mechanical grinding of steel slag is investigated and characterized using X-ray diffraction and size analyzer. The results indicate that the obtained ultrafine powders contain active mineral phases suitable for ordinary Portland cement (OPC)-Ca(OH)2, 2CaO·SiO2, 2CaO·Fe2O3. We have proved and first pointed out that the steel slag induces phase transition during grinding …
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Ultrafine phosphorus slag (UFPS) with surface area greater than 6000 cm (2)/g is a vitreous powder similar to granulated blast-furnace slag (GBFS). The …
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· In this experiment Ultrafine Slag (Alccofine 1203) of blain value 12000 cm2/gm was used. It is a product based on slag of high glass content with high reactivity obtained through the process of controlled granulation.This paper presents the …
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· 5.3.1 For packing of Ultrafine Ground granulated blast furnace slag in bulk cement terminal weighment of hourly check of mass of drums also shall be done in addition to weighment of bags mentioned in para 5.3 above. The records of weighments shall be maintained. 6. REJECTIONS – Disposal of non-conforming product shall be done in such a way so ...
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· Ultrafine slag is a new introduction to the construction field, ultrafine low calcium silicate material manufactured by Counto Microfine Products Pvt. Ltd, India confirming to (ASTM C989-99) . The physical properties are given in Table 1 and the chemical composition is …
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· The ultrafine particles were mainly gathered at 10.4 or 40 nm, and presented as lump-like agglomerates. The metal elements (Al and Pt) in the ultrafine particles originated from slag and iron ore. The risk level of the ultrafine particles was high, indicating the existing control measures were insufficient. Conclusions
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· EXPERIMENTAL STUDY OF FLEXURAL STRENGTH OF REINFORCED CONCRETE BEAM INCORPORATING ULTRAFINE SLAG Saurav#1, Dr. Ashok Kumar Gupta#1 #Department of civil engineering, Jaypee University of Information Technology, Solan, India [email protected] [email protected] Abstract: There have been enormous …
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· Effect of ultrafine red mud on the workability and microstructure of blast furnace slag-red mud based geopolymeric grouts[J]. Powder Technology, 2021. DOI: 10.1016/j.powtec.2021.07.046 (SCI, Q1, IF- 5.134)
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· The steel slag ultrafine powder/rubber composites were prepared by the steel slag ultrafine powder, carbon black N220, accelerant, sulfur, ZnO, stearic acid and the natural rubber. The influences of types of the steel slag and amount of steel slag grinding aid on the mechanical properties and flame retardant properties of the steel slag ultrafine powder/rubber composites …
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· Grain Slag Ultrafine grinder Introduction At present, grain slag ultrafine grinder takes up absolute advantage in the powder pulverizing of grain slag and it has become the preferred device of grain slag powder production …
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Development of Ultrafine Slag-Based Geopolymer Mortar for Use as Repairing Mortar ... the present study reports experimental works performed on geopolymer mortars prepared from ultrafine ground granulated blast-furnace slag. Geopolymer mortars were prepared with alkali activators composed of (1) sodium silicate and sodium hydroxide, and (2 ...
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Ultrafine phosphorous slag (UFPS) with surface area greater than 6,000 sq cm/g is a vitreous powder similar to granulated blast-furnace slag (GBFS). This paper presents a comparative investigation of UFPS and GBFS that showed that UFPS could improve the fluidity, strength, and durability of concrete at partial replacement of cement.
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The characteristics of Ultrafine Slag are listed in the 5% 475 25 145 645 430 714 Table No. 2 shown below: 10% 450 50 145 645 430 714 15% 425 75 145 645 430 714 Table 2: Characteristics of PPC 20% 400 100 145 645 430 714 Physical Characteristics Test Result For acid resistant test, 15 nos. of cube specimen were Bulk Density 670 Kg/m3 immersed ...
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· Development of Ultrafine Slag-Based Geopolymer Mortar for Use as Repairing Mortar ... the present study reports experimental works performed on geopolymer mortars prepared from ultrafine ground granulated blast-furnace slag. Geopolymer mortars were prepared with alkali activators composed of (1) sodium silicate and sodium hydroxide, and (2 ...
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This paper presents the effect of Ultrafine Slag in high strength concrete with cement replacement of 5%, 10%, 15% and 20%. Nowadays high strength concrete generally made with Ordinary Portland Cement. In this investigation Portland Pozzolana Cement (PPC) Fly ash based was used to make concrete more environmental friendly. In this experiment five mixes were prepared in …
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· He X., Zhang J., Zhang X., Su Y., Yang J. Compressive strength and hydration process of wet-grinded granulated blast-furnace slag activated by sodium sulfate and sodium carbonate. Cement and Concrete Composites, 2019, 97: 387-398. [2].
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