fly ashbased geopolymer clean production properties and

specializing in the production of large, medium and small concrete mixers, concrete mixing stations, stabilized soil mixing stations and other equipment. It is a heavy industry enterprise integrating R & production and sales.

Fly ash-based geopolymer: clean production, properties and ...

Jul 01, 2016  These properties of fly ash-based geopolymer are inherently dependent upon the chemical composition and chemical bonding and the porosity. The mechanical properties and durability can be improved by fine tuning Si/Al ratios, alkali solutions, curing conditions, and adding slag, fiber, rice husk-bark ash and red mud.

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Fly ash-based geopolymer: clean production, properties and ...

The production of fly ash-based geopolymer is mainly based on alkali activated geopolymerization which can occur under mild conditions and is considered as a cleaner process due to much lower CO 2 emission than that from the production of cement. The geopolymerization can trap and fix the trace toxic metal elements from fly ash or external sources.

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Fly ash-based geopolymer: Clean production, properties and ...

Jul 01, 2016  title = "Fly ash-based geopolymer: Clean production, properties and applications", abstract = "Fly ash is the fine solid particulate residue driven out of the boiler with the flue gases in coal-fired power plants. Now it can be used for making geopolymer which acts as a cement-like product. The geopolymer technology provides an alternative good ...

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Fly ash-based geopolymer: clean production, properties and ...

The production of fly ash-based geopolymer is. mainly based on alkali activated geopolymerization which can occur under mild conditions and is considered as a cleaner process due to much lower CO2 emission than that from the production of cement. The geopolymerization can trap and fix the trace toxic metal elements from fly ash or external sources.

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Fly Ash-based Geopolymer: Clean Production, Properties and ...

The production of fly ash-based geopolymer is mainly based on alkali activated geopolymerization which can occur under mild conditions and is considered as a cleaner process due to much lower CO2 ...

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Fly Ash-based Geopolymer: Clean Production, Properties and ...

The production of fly ash-based geopolymer is mainly based on alkali activated geopolymerization which can occur under mild conditions and is considered as a cleaner process due to much lower CO2 ...

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Fly ash-based geopolymer: clean production, properties and ...

The production of fly ash-based geopolymer is. mainly based on alkali activated geopolymerization which can occur under mild conditions and is considered as a cleaner process due to much lower CO2 emission than that from the production of cement. The geopolymerization can trap and fix the trace toxic metal elements from fly ash or external sources.

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Fly Ash-based Geopolymer: Clean Production, Properties

Wang H, Fly Ash-based Geopolymer: Clean Production, Properties and Applications, Journal of Cleaner Production (2016), doi: 10.1016/j.jclepro.2016.03.019. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we

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Fly ash-based geopolymer: clean production, properties and ...

Fly ash-based geopolymer: clean production, properties and applications. Journal of Cleaner Production 2016,125:253-267 Abstract: Fly ash is the fine solid particulate residue driven out of the boiler with the flue gases in coal-fired power plants. Now it can be used for making geopolymer which acts as a cement-like product.

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Preparation and properties of fly ash-based geopolymer ...

Apr 08, 2020  The aim of the research was to investigate the influences of high alkaline content foundry sand regeneration wastes incorporated with fly ash in the production of geopolymer concrete. The fly ash-based geopolymer concrete was activated using alkaline solutions of sodium silicate and sodium hydroxide. The geopolymeric products were characterized using X-ray diffraction, scanning electron ...

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Fresh And Hardened Properties Of Fly Ash Based

concentrated for commercial production of this geopolymer concrete for its specific engineering applications. It has been found that fly ash based geopolymer concrete has good engineering properties with a reduced global warming potential resulting from the total replacement of ordinary Portland cement.

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Minerals Free Full-Text Fly Ash-Based Geopolymer ...

Normally, a fly ash-based geopolymer has low tensile strength. It also has low fracture toughness. Because of these properties, fly ash-based geopolymers suffer from brittle failure. These properties can be enhanced if the geopolymer is embedded with chitosan or fibers of steel (ST), polyvinyl alcohol (PVA), sweet sorghum and cotton.

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Fresh and hardened properties of one-part fly ash-based ...

Fly ash-based geopolymer: clean production, properties and and calcium silicate hydrate at the early stage of alkaline activation. Cement applications. J.

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Clean production and properties of geopolymer concrete; A ...

Apr 01, 2020  Thus, the production of industrial-by-products-based geopolymer greatly depends on alkali activated geopolymerization occurring under moderate conditions and is deemed as a cleaner procedure because of the higher reduction of CO 2 emissions during manufacturing when compared to OPC. It is shown that the production of GeoPC needs intensive care ...

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Fly Ash/Blast Furnace Slag-Based Geopolymer as a Potential ...

Mar 18, 2019  This article investigated the potential of fly ash (FA)/blast furnace slag- (BFS-) based geopolymer as a novel backfilling material. The effects of NaOH concentration and FA/BFS mass ratio were explored through XRD, FTIR, and TG-DTG analyses. The results indicated that the reaction products and strengths of geopolymer depended on the NaOH concentration and types of source materials.

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Effects of Si/Al ratio on the efflorescence and properties ...

Efflorescence seriously affects the practical application of geopolymer. In this study, fly ash based geopolymer was prepared by raw materials containing different Si/Al ratios. A test method of the efflorescence degree of geopolymer was proposed and applied. The effects of the Si/Al ratio on products, microstructure, pore structures, compressive strength, water loss rate and efflorescence of ...

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Effect on the properties of fresh and hardened concrete ...

Mar 22, 2021  Fly ash-based geopolymer fine aggregate is a potential replacement material for the natural river sand as it has similar physicochemical properties. This paper reports the experimental investigation of a study conducted using this fine aggregate in concrete with a focus on the properties of fresh and hardened concrete.

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Demir, Funda_爱学术

geopolymer;fly ash;rsm method;al2o3 addition (1) geopolymer;gold mine tailings;adsorption;heavy metals (1) 内容类型 期刊 (7) 刊名 journal of cleaner production (1) journal of food science and technology-mysore (1) journal of non-crystalline solids (1) main group chemistry (1) shock and vibration (1)

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Properties of fly ash-based lightweight geopolymer ...

The present paper aims to utilize the fly ash wastes with lightweight aggregates for geopolymer concrete production process in which sodium hydroxide (NaOH) and sodium metasilicate (Na 2 SiO 3 ) were used as alkali activators, respectively. The designed experiments were examined by the Yates Analyses and so the productions of geopolymer concrete were investigated depending on curing ...

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Fresh And Hardened Properties Of Fly Ash Based

concentrated for commercial production of this geopolymer concrete for its specific engineering applications. It has been found that fly ash based geopolymer concrete has good engineering properties with a reduced global warming potential resulting from the total replacement of ordinary Portland cement.

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Properties of Fly Ash and GGBS Based Geopolymeric Binder

The setting times of fly ash and GGBS based geopolymeric binder was measured using Vicat needle. The geopolymer paste made with fly ash, sand, GGBS and activator solution was cast into the 40 mm height, 80 mm diameter conical mould in two layers. The period elapsing between the time when the solution is added to the geopolymer with fly ash

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Mechanical Property and Microstructure of Fly Ash-Based ...

Mar 05, 2021  Sodium silicate is one of the common alkali activators of geopolymers. The modulus, concentration and dosage of sodium silicate have significant effects on the activation of fly ash, the strength and microstructure of geopolymer. In this paper, unconfined compressive strength test, X-ray diffraction analysis (XRD), Fourier transform infrared light (FTIR), 29Si nuclear magnetic resonance

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Optimization of fly ash based geopolymer mix design for ...

Jul 30, 2019  Fly ash based geopolymer is obtained by mixed of fly ash and alkaline activator. The alkaline solution is divide into molarity of sodium hydroxide which 12M and different ratio of sodium silicate to sodium hydroxide 1.5, 2.0, 2.5, 3.0.

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Clean production and properties of geopolymer concrete; A ...

DOI: 10.1016/j.jclepro.2019.119679 Corpus ID: 210964247. Clean production and properties of geopolymer concrete; A review @article{Amran2020CleanPA, title={Clean production and properties of geopolymer concrete; A review}, author={Y. Amran and Rayed Alyousef and Hisham Alabduljabbar and Mohamed El-Zeadani}, journal={Journal of Cleaner Production}, year={2020}, volume={251},

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Fly-Ash-Based Geopolymers: How the Addition of Recycled ...

Moreover, on substitution of fly ash with glass and red mud, the geopolymer demonstrates a similar performance in terms of fracture toughness and flexural strength properties. The results confirm that red mud and waste glass have the potential to partially replace fly ash in geopolymer synthesis, opening thus the possibility of using geopolymer

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LOW-CALCIUM FLY ASH-BASED GEOPOLYMER CONCRETE:

the fly ash is not effectively used, and a large part of it is disposed in landfills. As the need for power increases, the volume of fly ash would increase. Both the above issues are addressed in our work. We have covered significant area in our work, and developed the know-how to manufacture low-calcium fly ash-based geopolymer concrete.

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Fly Ash/Blast Furnace Slag-Based Geopolymer as a Potential ...

Mar 18, 2019  This article investigated the potential of fly ash (FA)/blast furnace slag- (BFS-) based geopolymer as a novel backfilling material. The effects of NaOH concentration and FA/BFS mass ratio were explored through XRD, FTIR, and TG-DTG analyses. The results indicated that the reaction products and strengths of geopolymer depended on the NaOH concentration and types of source materials.

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Effect on the properties of fresh and hardened concrete ...

Mar 22, 2021  Fly ash-based geopolymer fine aggregate is a potential replacement material for the natural river sand as it has similar physicochemical properties. This paper reports the experimental investigation of a study conducted using this fine aggregate in concrete with a focus on the properties of fresh and hardened concrete.

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Early solidification/stabilization mechanism of heavy ...

2 天前  Guo B, Pan Da, Liu B, Volinsky AA, Fincan M, Du J, et al. Immobilization mechanism of Pb in fly ash-based geopolymer. Construction and Building Materials 2017a; 134: 123-130. Guo X, Zhang L, Huang J, Shi H. Detoxification and solidification of heavy metal of chromium using fly ash-based geopolymer with chemical agents.

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Strength properties and durability studies on modified ...

In this paper, mechanical and short-term durability properties of fly ash and slag based geopolymer concretes (FAGPC-SGPC) were investigated. The alkaline solution was prepared with a mixture of ...

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Setting Time, Workability and Strength Properties of ...

Feb 11, 2021  The fly ash-based geopolymer concrete demonstrates the highest slump with low compressive strength and it is reverse in slag-based geopolymer concrete for both the activators. 5. The reaction rate of fly ash-based geopolymer concrete at an early age is lower than at a later age.

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Effects of Si/Al ratio on the efflorescence and properties ...

Efflorescence seriously affects the practical application of geopolymer. In this study, fly ash based geopolymer was prepared by raw materials containing different Si/Al ratios. A test method of the efflorescence degree of geopolymer was proposed and applied. The effects of the Si/Al ratio on products, microstructure, pore structures, compressive strength, water loss rate and efflorescence of ...

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