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reuse of granulated blast furnace slag (GBFS) and steel slag (SS) from the steel manufacturers located near coastline. GARC was developed with industrial waste including GBFS, SS and flue gas desulfurization gypsum as the major raw materials. Physical properties and compressive strength development of the prepared GARC were examined.
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ground granulated blast furnace slag (GGBS) and unground blast furnace slag (GBS) as a partial replacement for cement for the production of concrete. A total of 14 concrete mixes were prepared under a design density of 1,300 kg/m3, two different filler-to-binder ratios, and cement replacement levels of 30-70% of the
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Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most widely used building material. Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminum combined.
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Ground granulated blast furnace slag (GGBFS) is designated in ASTM C 989 and consists mainly of silicates and aluminosilicates of calcium. GGBFS is divided into three classifications based on its activity index. Grade 80 has a low activity index and is used primarily in mass structures because it generates less heat than portland cement.
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Oct 10, 2020This ground slag is called ground granulated blast furnace slag. Ground granulated blast is eco-environmental construction material. By replacing cement with crushed blast furnace slag, carbon dioxide emissions can be controlled to a certain extent [23, 30]. GGBFS improves concrete impermeability as well as corrosion and sulfate resistance.
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However, the influences of blast-furnace slag on the durability properties of high-strength concrete for steam-cured pretensioned elements are not clear. In this study, carbonation and chloride penetration of the high-strength concrete using blast-furnace slag were examined. As the result, the addition of blast-fumace slag increased the ...
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GGBS Concrete. GGBS concrete is concrete which contains a significant volume of ground granulated blast furnace slag (GGBS) in the mix as either a supplementary cementitious material or as a replacement for some of the ordinary Portland cement. GGBS concrete behaves in a similar manner to fly ash concrete and affects the setting time, strength ...
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Geopolymer concrete specimens of size (100mm x100mm x 100mm) are casted with ground granulated blast furnace slag and fly ash as geopolymeric materials instead of Portland cement paste, the ratio ...
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The concrete made with Ground Granulated Blast Furnace Slag cement sets more slowly compared to ordinary Portland cement concrete based on the amount of GGBS in the cementations material. It also needs longer period to gain required strength. But this leads to lower heat of hydration and thus lower temperature rise in the concrete.
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Ground granulated blast-furnace slag is the granular material formed when molten iron blast furnace slag (a by-product of iron and steel making) is rapidly chilled (quenched) by immersion in water. It is a granular product, highly cementitious in nature and, ground to cement fineness, hydrates like Portland cement. (Blast-Furnace Slag: A by ...
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The highly cementitious properties of BFS, comprising of lime, silicates and aluminates, make it a good material to be used in concrete. BFS storage not only occupies a large amount of land resources but also causes environmental pollution to the soil, underground water and atmosphere.
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According to previous studies, about 70% of the total production of BF slag has been used as a replacement for Portland cement due to its numerous advantages, e.g., an increase in long-term strength and durability, decreased heat of hydration and the occurrence of the alkali-aggregate reaction.
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When compared to OPC, the blastfurnace cement developed lower compressive strength at early ages, but equal or higher at later ages in more cases, i.e., all 9 CEM III/A and 7 CEM III/B cement...
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The achieved results indicate that the hydraulicity of the cupola slag is incomparable with the hydraulicity of the blast-furnace slag; this may be associated with the problems that arise when the ...
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Slag usage in concrete is influenced by its fresh and hardened properties. Cement replacement by blast furnace slag results in more workable concrete, which is generally much easier to compact by vibration, resulting in less entrapped air [38].
Get priceBLAST FURNACE SLAG Blast furnace slag is composed of the following oxides, Table 1.oxides composition of the Blast furnace Slag. Oxides Content SiO2 19.71 Al2O3 5.20 Fe2O3 3.73 CaO 62.91 MgO 2.54 LOI 0.96 SO3 2.72 K2O 0.90 Na2O3 0.25 This composition is quite closer to the composition of Portland cement. 5. EFFECT OF GROUND
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Mineral admixtures serve a critical function in improving the characteristics of concrete. The characteristics of blended concrete are investigated in this research utilizing varying quantities of ground granulated blast furnace slag (GGBS). The mix design is...
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Supplier from Viet Nam. Air-cooled blast furnace slag is a rock-like material, but often more porous than most natural rocks. Blast Furnace Slag (BFS) results in production of GGBS which is a by- product of iron industry and have the potential to replace cement in concrete. Blast Furnace Slag (BFS) Brief Description .
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Granulated Blast Furnace Slag (GGBS) for a constant water/binder ratio of 0.33. Twenty-two mixtures prepared by replacing of cement with GGBS (20%, 40%, and 60%), SF (10%, 15%, and 20%) and MK (10%, 15%, and 20%) were designed for target strength 48 Mpa. From the results, it was observed that 45% replacement of cement with GGBS in binary blend ...
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GGBS (Ground Granulated Blast-furnace Slag) is a cementitious material whose main use is in concrete and is a by-product from the blast-furnaces used to make iron. Blast-furnaces operate at temperatures of about 1,500°C and are fed with a carefully controlled mixture of iron ore, coke and limestone. The iron ore is reduced to iron and the ...
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replacement ratio of BFS (blast furnace slag) and FA (fly ash) against chloride attack. Objectives of the study includes: (1) investigation of material properties such as chloride ion penetration rate, oxygen permeability; (2) investigation of rebar corrosion; (3) prediction of life time for seawater mixed concrete with different cement ...
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Few researchers have published journals regarding GGBS-blended concrete. Ground granulated blast furnace slag (GGBS or GGBFS) is obtained by quenching molten iron slag (a by-product of iron and steelmaking) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder.
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Concrete made with 60% or more ground granulated blast furnace slag is widely recognized for its resistance to sulfate attack. The alkali-silica reaction described above is minimized by pozzolans that reduce the alkalinity. Class F fly ash is very effective in this regard, while the performance of Class C ash varies.
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Ground granulated blast furnace slag is widely used with its characteristics of cost-effective, green effect, hydraulic property as raw material for cement, civil engineering works, fertilizer and so on. Raw material for Cement. The largest demand for blast furnace slag is cement. Ground granulated blast furnace slag has potential hydraulic ...
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However, the combination of using both blast furnace slag as binder and fine aggregate shows a greater improvement of those properties of concrete. Keywords. Ground granulated blast furnace slag, Blast furnace slag sand, Carbonation, Drying shrinkage strain INTRODUCTION Blast furnace slag is a by-product generated during the production of iron.
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Granulated Blast Furnace (GGBS)3,5.It has been widely used as a cement replacement material due to its latent hydraulic properties, while FA has been used as a pozzolanic material to enhance the physical, chemical and mechanical properties of cements and concrete20. properties of slag vary widely with the process of cooling.
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Verifying Portland Limestone Cement Durability Holcim ASTM C595 (Type IL) or ASTM C1157 cements are tested for durability performance. Tests generally include: Fresh & Hardened concrete properties - Requirements are met through concrete mix design - ASTM Sulfate Resistance - ASTM C1012 Alkali-Silica Reactivity - ASTM C1260/1567
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road paving, called gradually-cooled blast furnace slag. In Japan, the volume of granulated blast furnace slag produced is over 20 million t per year and 90% of it is used as a material for cement and concrete production [2]. Concrete containing blast furnace slag is well known for improving some properties of concrete
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Other products such as air-cooled blast furnace slag are also used. There are other classes of non-structural lightweight concretes with lower density made with other aggregate materials and higher air voids in the cement paste matrix, such as in cellular concrete. These are typically used for their insulation properties.
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slag powder and blast furnace slag so the recycling of steel slag can bring enormous benefits and environ-mental benefit to whole society.[9] 6. Ground granulated blast furnace slag is commonly used in combination with Portland cement in concrete for many applications[10,11] 7. The heat of hydration is dependent on the Portland
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1 day agoAbsorption property of concrete is very much important in recent aggressive environmental conditions. The main components of blast furnace slag are CaO (30-50%), SiO 2 (28-38%), Al 2 O 3 (8-24%), and MgO (1-18%). In general, increasing the CaO content of the slag results in raised slag basicity and an increase in compressive strength.
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The effect of partial replacement of ordinary Portland cement (OPC) by blast-furnace slag (BFS) on concrete's resistance to chlorides was examined by comparing chloride profiles and colour change boundaries after non-steady state migration and natural diffusion tests, cfr. NT Build 492 and NT Build 443, respectively. Chloride profiles were obtained by means of potentiometric titration and ...
Get priceThe corrosion by severe sulfuric acid attack at pH 2 of two self-compacting concrete (SCC) types that are based on ordinary Portland cement (OPC) and granulometrically optimized blast-furnace slag cement was evaluated by three complementary tests that were performed in different research institutes. .
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in comparison with blast furnace slag (BFS), is not appropriate to be used in blended cement production. Although many studies have been conducted on the evaluation of steel slag usage in road construction and use of blast furnace slag in concrete mixes, few researches have been performed regarding the utilization of steel slag in concrete.[1] 2.
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Oct 2, 2020The ground granulated blast furnace slag (GGBS) is a by-product of iron manufacturing which when added to concrete improves its properties such as workability, strength, and durability. This material is obtained by the heating of the iron ore, limestone, and coke at a temperature of about 1500 o C. The process is carried out in a blast furnace.
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Study on The Thermal Properties of Concrete Containing Ground Granulated Blast Furnace Slag, Fly Ash and Steel Reinforcement Bekir Erdem Bas In this study, the thermal and mechanical properties of two types of concrete were measured. The first type contained ground granulated blast furnace slag, and the second type contained Class F fly ash.
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In order to obtain a suitable reactivity, the obtained fragments are ground to reach the same fineness as Portland cement. The main components of blast furnace slag are CaO (30-50%), SiO 2 (28-38%), Al 2 O 3 (8-24%), and MgO (1-18%). In general increasing the CaO content of the slag results in raised slag basicity and an increase in compressive ...
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Figure 3.2: Variation of tensile strength of concrete produced by replacing natural sand by M-sand and GGBS - "Characteristics Properties of Concrete by Replacing Natural Sand by Manufactured Sand [M-Sand] and Ground Granulated Blast Furnace Slag [GGBS]"
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Recycled materials, including blast furnace slag, glass (mostly for decorative purposes), and ground-up concrete are starting to be used as concrete aggregates. Air. The fourth main ingredient of concrete is entrained air. While it usually isn't considered an ingredient, the fact is that a concrete mix includes anywhere from 1% to 9% entrained air.
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List of Top Key Players in Ground Granulated Blast-Furnace Slag Market Report: ... 6.3.1 Global Ground Granulated Blast-Furnace Slag Consumption and Growth Rate of Portland Cement and Concrete ...
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