Blast furnace slag cement is the mixture of ordinary Portland cement and fine granulated blast furnace slag obtained as a by product in the
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2018.8.10 In this study, a granulated blast furnace slag (GBFS) and a CP-V ARI Brazilian Portland cement (OPC) were used as raw materials; this type of cement (CP-V
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2016.9.1 Portland blast-furnace slag cement (PSC) was obtained by mixing of 65% ordinary Portland cement (OPC) with 35% granulated blast-furnace slag (GBFS). Very
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2019.8.7 In Japan, Portland blast furnace slag cements that contain 30–60% of blast furnace slag (BFS) are classified in the slag cement class B in JIS R 5211. Even if slag
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2020.7.17 Granulated blast-furnace slag (GBFS) and coal fly ash (CFA) are two well-known constituents in Portland cements. Ternary Portland cements (GBFS-CFA-K)
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The cementitious performance of a coarse granulated blast furnace slag, 2900 cm 2 /g, was investigated in concretes of 230, 280 and 330 kg binder/m 3 . First, the slag partially
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2001.10.1 Blast furnace slag has been widely used as a successful replacement material for Portland cement, improving some properties and bringing environmental and
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2017.6.1 In the present study, three hybrid cements based on ground granulated blast furnace slag, fly ash, Portland clinker and sodium sulfate, and an alkali-activated
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2020.8.1 The leaching behavior of Co2+ from blast furnace slag-blended cement is investigated. Semi-dynamic leaching test results show that the performance of the
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2016.6.17 The hydration of ternary blended cements comprising Portland cement, metakaolin and blast-furnace slag was studied at different temperatures of 30, 40, 50 and 60 °C by isothermal calorimetry. Phase composition of hydration products was determined by thermal analysis and X-ray diffraction for sample hydrated at 60 °C. Hydration involves
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2020.11.23 The cements used in the current work were common blast furnace slag cement (SC) CEM III/A-42.5 N (36–65% slag content) and Portland cement (PC) CEM I-42.5 N conforming to ESS: 4756-1/2013 (Egyptian Standards 2013) were used. Both cements were produced by Amreyah Cement Co. in Alexandria.
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2020.1.10 In this study, the differences in autogenous shrinkage behaviors among the Portland blast furnace slag (BFS) cements were investigated experimentally. Portland BFS cements that contain 40–45% BFS were collected from eight different plants in Japan and their autogenous shrinkage at early ages were measured with mortar specimens.
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2015.1.1 In this study the hydration of quaternary Portland cements containing blast-furnace slag, type V fly ash and limestone and the relationship between the types and contents of supplementary cementitious materials and the hydrate assemblage were investigated at ages of up to 182 days using X-ray diffraction and thermogravimetric
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Blast Furnace Slag (BFS) cement is the combination of Ordinary Portland Cement (OPC) and fine Granulated Blast Furnace Slag (GBFS) gained as a byproduct in the steel making manufacturer with below 70% to that of cement. Ground Granulated Blast Furnace Slag (GGBFS) is a fine glassy granule which encompasses cementitious possessions.
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2017.6.1 Section snippets Materials and methods. This research used OPC and granulated blast-furnace slag (GBFS). Table 1 shows their chemical compositions, which were evaluated by X-ray fluorescence, using a MagixPro PW-2440 equipment (PANalytical, USA), and the average particle sizes (D [4,3]), which were determined by laser
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2014.9.15 Mortars of portland cement with 50% of blast furnace slag were alkali activated with 0–10%Na 2 O using waterglass and cured at 10–40 °C. The presence of the slag reduced the strength of 0%Na 2 O blends and the alkaline activation with 4%Na 2 O resulted in even lower values; 6%Na 2 O gave similar results as 0%Na 2 O and 10%Na 2
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1999.1.1 With the exception of the plain Portland cement concrete which had the lowest, but reasonable, strength of 67.5 MPa at 7.5 years the slag cement concretes were very high strength and in the range of 82.5-105 MPa at the same age, clearly demonstrating the benefical longer term effect of slag. 2,2.2.5.
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2022.1.24 Replacement of Portland cement with high volumes of blast furnace slag is known to negatively affect the early-age properties of concrete, particularly at low temperatures. In this study, the effectiveness of Na2SO4 on the mechanical properties, hydration kinetics and microstructure development of a commercial CEM III/B (~69%
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2003.1.1 Thereafter, portland cement containing blast-furnace slag typically shows a reduction of strength at early ages (7–20 days) and similar or greater strength at later ages [9]. The addition of blast-furnace slag, regardless of composition and replacement level, reduces the permeability and the ionic diffusion of chloride in well-cured concrete [9].
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2019.8.7 In Japan, Portland blast furnace slag cements that contain 30–60% of blast furnace slag (BFS) are classified in the slag cement class B in JIS R 5211. Even if slag cements are classified in a category, different autogenous shrinkage behaviors are observed among them. In this study, class B slag cements are collected from eight different ...
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2001.10.1 The increased slag reactivity with higher temperatures is a commonly reported feature of blast furnace slag [6], [7], [13]. With regards to the water available for the reactions, it can be noted in Fig. 2 that the slag reactivity was also increased at higher w/s, compare curves A–B and B–D.
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2022.12.13 Ternary Portland cement usage with a high amount of cement constituents different from clinker can afford great climate change advantages by lowering the Portland cement clinker content in the final product. This will contribute to cutting greenhouse gas emissions to close to zero by 2050. Such ternary Portland cements can
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2021.10.7 This study contains data from the study of thermokinetic processes in alkali-activated blast-furnace slag cements compared to ordinary Portland cement (OPC). The obtained results show that, in contrast to OPC, the heat release values cannot be considered as a characteristic of the activity of alkali-activated blast-furnace slag cements.
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Alkali-activated slag cements are Portland cement-free binders produced through the chemical reaction between an alkaline activator and ground granulated blast furnace slag (GGBS). The performance of these materials is strongly dependent on the mineralogy and composition of the slag, and the nature and concentration of the alkaline activator ...
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2021.2.1 GGBFS is a by-product of iron- and steel-production from the reduction of iron ore to pig iron in the blast furnace [ 3 ]. The liquid slag is rapidly cooled to form granules, which are then ground to a fineness similar to Portland clinker. In 2018, 15 Mt. GGBFS were produced worldwide [ 4 ].
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2017.4.13 Specimens prepared from calcium sulfate, blast-furnace slag, and ordinary portland cement exhibit better mechanical performance compared to admixtures prepared from other mix ratios. The sulfate ions from sulfates would react with Ca 2 + from slag cement and form the reaction product ettringite. However, the addition of sodium
Read More1995.4.1 Based on isothermal and adiabatic hydration tests a new general hydration model is developed, valid both for portland cement and blast furnace slag cement. This hydration model enables the calculation of the heat production rate as a function of the actual temperature and the degree of hydration. Pergamon Cement and Concrete
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Portland blast furnace cement (simply called slag cement) refers to the hydraulic binding material ground by mixing Portland cement clinker, granular blast furnace slag, and appropriate amount of gypsum, code-named P • S. The mixed amount of granular blast furnace slag in cement is 20% ~ 70% by weight.
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2016.1.20 The effect of up to 30–50% of ground granulated blast-furnace slag (GGBS) and its' combination with the silica fume (SF) and fly ash (FA) -within the BS EN 197-1 permitted limits-on fresh, ... In order to promote wider use of Portland-slag and composite cements concrete, a range of BS EN 197-1 cement types with limited data on
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