Fly ash and slag are among the most used wastes as supplementary cementitious materials (SCM) for partially replacing cement in concrete. Globally, these by-products are generated at a substantial scale, with fly ash production ranging from 900 to 1000 million tonnes and slag production from 140 to 330 million tonnes annually [15, 48].Herath et al. [22] reported …
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India ranks among the foremost global producers and consumers of cement, and the cement industry contributes significantly to carbon emissions. Alkali-activated materials have gained significant attention as a sustainable alternative to Portland cement, offering the potential to mitigate carbon dioxide emissions and promote effective recycling of waste materials. Fly …
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This paper presents a novel low-carbon binder formulated from fly ash (FA), ground granulated blast furnace slag, steel slag, and desulfurization gypsum as a quaternary solid waste-based material. It specifically examines the influence of FA content on the mechanical properties and hydration reactions of the quaternary solid waste-based binder. The mortar test …
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As fly ash & Granulated Blast Furnace Slag (GGBS) is waste product obtained by coal & steel industry respectively. Present work necessarily deals with the "Utilization of waste material in concrete". Total 45 tests were conducted with percentage variation of cement, GGBS & fly ash and test includes compressive strength
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or by-product materials such as fly ash, GGBS and rice husk ash. He termed these binders as geopolymer [1]. The most common industrial by-products used as binder materials are fly ash (FA) and ground granulated blast furnace slag (GGBS) [2-4]. 2. EXPERIMENTAL STUDY 2.1 Materials . Our objective was to determine the effect of fly ash and GGBS
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The degradation of concrete structures in the marine environment is generally caused by sulfate attack and chloride ion penetration. To improve the durability of concrete in the marine environment, fly ash (FA) and ground granulated blast furnace slag (GGBS) were partially used to replace cement in a ternary system.
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Different cementitious materials such as fly ash, silica fume, waste glass, wheat straw ash, marble waste, bentonite clay as well as GGBS are used in concrete production. Ground granulated blast-furnace slag (GGBS) is an industrial waste by-product material that is rich in amorphous calcium, silica, and alumina, which makes it appropriate ...
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In order to seek good candidates, this paper systematically studied the possibility of using ground granulated blast-furnace slag (or slag, GGBS) as the partial FA replacement …
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Fly ash and granulated blast furnace slag are both bulk industrial solid wastes. Using these two raw materials to completely replace cement and prepare alkali-activated fly ash slag concrete (AAFSC) at room temperature can not only efficiently utilize industrial solid waste and reduce the carbon footprint, but also reduce the economic cost and technical difficulty of …
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use GGBS (Ground granulated Blast furnace slag) and Fly ash as combined replacement for ordinary Portland cement and river sand respectively. M20 grade of concrete with W/C 0.5 is carried out with
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The results of the experiments conducted for the 3 days, 7 days and 28 days cube specimens under different mix ratio of fly ash and ground granulated blast furnace slag (GGBS)
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To address the geological hazard posed by unstable loess slopes prone to collapse and landslides, a high-strength geopolymer cementing material was developed utilizing green steel slag–fly ash as its primary constituent and activated through the application of sodium silicate alkalinity. The mechanical properties and microstructure changes of loess under …
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Hence, with the huge production of fly ash compared to blast furnace slag in mind, a 70:30 mix of fly ash: GGBS was proposed in the present study. The index and physical properties of the materials used in this study are summarized in Table 1.The expansive soil is classified as CH in accordance with the USCS classification system.
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Properties of Fly Ash based Geopolymer Concrete with GGBS & RHA - written by Aniket Shobha Diliprao Hadole published on 2021/05/24 download full article with reference data and citations ... is obtained by quenching molten iron slag (a by- product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, granular ...
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The potential of using a binder for stabilization of expansive soils that consists of a mixture of fly ash and ground granulated blast furnace slag (GGBS) is evaluated in this study.
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In the mixing process, raw materials (GGBS, fly ash, and soil) were dried and mixed together. All specimens, as tabulated in Table 1, are produced using various ratios of GGBS or fly ash to alkali activator and Na 2 SiO 3 /NaOH as reported by Phummiphan and Shamshad [14,15]. Then, the samples were cured at ambient temperature for 1 to 7 days.
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In terms of strength development, rice husk ash concrete is like fly ash/slag concrete. Rice husk ash, on the other hand, is a very active pozzolanic material, and the consequences of the pozzolanic reactions are visible at an early age rather than later as with other replacement cementing materials [14].It is favorable to the strength development of …
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This research work has the use of Ground Granulated Blast Furnace Slag (GGBS), i.e., an aluminosilicate material with changing percentages replaces the fly ash (FA) in geopolymer concrete. The obtained sand can be utilized as a complete substitute material as fine aggregate for natural sand due to its high demand.
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The mineralogy and microstructural alterations in fly ash (FA) and mixtures of steel slag–fly ash stabilized with lime and ground granulated blast furnace slag (GGBS) …
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Green and low-carbon materialization for dredged sediment (DS) is limited due to its low pozzolanic activity. In this study, a novel DS-based non-sintered lightweight aggregate (LWA) is developed by steel slag (SS) and fly ash (FA) activation. Process optimization is performed by the response surfaces, and the basic properties and characterization of the …
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In this paper we propose a new technique of soil stabilization for road construction based on using new alternative binders. The project aims to evaluate the effects of alternative additive...
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furnace slag (GGBS), fly ash (FA), and rice husk ash (RHA)) were used in RAC with 0% and 1% HSF, respectively. SF, GGBS, FA, and RHA were respectively used as 10%, 30%, 20%, and 15% by mass
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The effects of steel slag (SS) and fly ash (FA) on hydration heat, fluidity, setting time and rheological properties of alkali-activated slag (AAS) pastes with different silicate modulus (Ms) values were comparatively investigated. The results show that the incorporation of SS shortens the induction period, increases the cumulative hydration heat, improves the initial …
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Commonly employed precursors for geopolymer mortar include fly ash (FA), ground granulated blast furnace slag (GGBS) [9], recycled concrete powder (RCP) [10], recycled paste powder (RPP) and clay brick powder (CBP) [11], waste concrete fines (WCF) and waste brick fines (WBF) [12], etc. There are advantages of the combined use of slag and fly ash.
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This study developed a sustainable low-carbon cementitious material using calcium carbide residue (CCR) as an alkali activator, combined with ground granulated blast furnace slag (GGBS) and fly ash (FA) to form a composite. The objective was to optimize the CCR dosage and the GGBS-to-FA ratio to enhance the unconfined compressive strength (UCS) of …
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Blast Furnace Slag (GGBS) and Fly Ash Dayalan J1 1Senior Assistant Professor, Department of Civil Engineering, New Horizon College of Engineering, Bengaluru. -----***----- Abstract - Stabilization is a broad sense for the various methods employed and modifying the properties of a soil to improve its engineering performance and used for a ...
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Many concrete manufacturers have opted to substitute Fly Ash (FA) or Granulated Blast Furnace Slag (GBFS) instead of cement (fully or partially). These cementitious materials are by-product waste of other processes; FA from the burning of coal in power plants and GBFS from iron and steel production.
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3.1 Material Used. Fly ash: Fly ash used in the experiment is sieved through IS 90 micron sieve and confirmed to IS: 3812 [].The specific gravity of fly ash was 2.17. Ground granulated blast furnace slag (GGBS): GGBS used in the experiment is confirmed to IS: 12089 [].The specific gravity of GGBS was 2.90. Alkaline solution: For examination of the properties …
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Request PDF | On Dec 15, 2020, Liaqat Ali Qureshi and others published Combined effects of supplementary cementitious materials (silica fume, GGBS, fly ash and rice husk ash) and steel fiber on ...
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The input parameters contain (GGBS) (Ground Granulated Blast Furnace Slag), Fly-ash, (MK) (Metakaolin), Cement, bonding element (The collective cementitious components, consisting of fly-ash, cement, (MK,) and (GGBS)), Water/ paste, Water, Super-plasticizer ((SP)), Viscosity Modifying Agents ((VMA)), (NCA 20 DOWN) (Natural large grains 20 mm …
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According to our project we adding GGBS act as a curing agent at ambient temperature in GPC, it makes concrete ... Fly Ash, GGBS, Rice Husk Ash, Compressive Strength, etc. ... is obtained by quenching molten iron slag (a by-product of iron and steel-making) from a blast furnace in water or steam, to produce a glassy, granular product that is ...
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In this paper studied various literature about the effect of GGBS and FLY ASH in concrete, based on this study concluded GGBS attains high compressive strength up to 40% replacement and …
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Under the influence of alkali activators, such as hydroxides and sodium silicate, alkali-activated materials were prepared by using industrial wastes such as granulated blast …
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Abstract To completely replace Portland cement for mine backfilling, MSWI fly ash (FA) and solid metallurgical wastes (ground granulated blast furnace slag, steel slag and flue gas desulphurisation gypsum) were used to prepare fly ash-slag-based binder (FBB). The effect of FA content on the hydration and Pb stabilization mechanisms of the FBB was investigated. When …
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At 5% and 1.0% of the incorporation of steel fibres, the highest increase in strength was seen. Conclusion: The use in the manufacture of cement of fly-ash and GGBS contributes to minimise the emissions of air by the removal of carbon dioxide and carbon-monoxide. The study results suggest that the system features of all the mixes tested are ...
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The performance of precursor materials has a significant impact on the basic mechanical strength of geopolymer mortar. Fly ash is one of the most widely used raw materials among the various precursor materials for the preparation of geopolymer mortar [11].In the past two decades, research on geopolymer mortar has been focused on developing ordinary and …
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Among the more mature technologies currently under investigation and application is the partial replacement of cement with supplementary cementitious materials such as ground granulated …
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Fly ash and Blast Furnace Slag for Cement Manufacturing GBFS is slag from the iron production in Basic Oxygen Furnaces. When this slag is actively cooled and ground, GBFS is produced, which can be utilised as a cement or concrete addition. GBFS is said to increase durability of concrete due to an increased setting time, which reduces
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