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Role of Alkaline Activator in Development of Ecofriendly

Role of Alkaline Activator in Development of Ecofriendly

Role of Alkaline Activator in Development of Eco-friendly ...

2015-2-14  alumina and a high alkali content to attain structural strength. Therefore, geo-polymers are sometimes referred to as alkali activated alumino silicate binders [6]. B. Constituents of Geo-Polymer 1) S. V. Joshi and M. S. Kadu Role of Alkaline Activator in Development of Eco-friendly Fly Ash Based Geo Polymer Concrete Source Materials

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Application of eco-friendly alternative activators in ...

2021-3-1  Application of eco-friendly alternative activators in alkali-activated materials: A review ... as an industrial residue or other low added value raw material - with an alkaline activator. This activator usually consists of an aqueous ... Yang et al. studied the hydration products and mechanical strength development of alkali-activated slag with ...

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Alkaline Activator - an overview ScienceDirect Topics

Further activator modulus plays a major role in the strength development according to the type of slag [16]. The fineness of slag, concentration and nature of activators, and curing temperatures play a major role in the mechanical properties of AA BFS mortars as reported by Fernandez-Jimenez et al. [27].

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Alkali activated materials vs geopolymers: Role of boron ...

Request PDF Alkali activated materials vs geopolymers: Role of boron as an eco-friendly replacement In this paper, the influence of boron ions on the strength development and microstructure ...

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Alkali activated materials vs geopolymers: Role of boron ...

The compensatory role of boron in the strength of AAS was undeniable where even introducing more than 30% of borax led to a slight growth in the AAS strength. It was concluded that borax-based binders could be potential candidates for high volume substitution of sodium silicate in

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(PDF) A Study on Effect of Alkaline Activator on Strength ...

Generally alkaline activator plays vital role in developing strength of geopolymer concrete, as it is provided by few researchers that the in crease in SS/SH decrease the strength of

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Influence of alkaline activators on the mechanical ...

2021-3-1  In this study, cement-free geopolymer concrete (GPC) mixes are prepared using locally produced fly ash with varying NaOH concentrations (8 M−16 M), Na 2 SiO 3 /NaOH ratios (1.5–2.5) and alkaline activator to fly ash (AA/FA) ratios (0.4–0.6) to investigate the influence of alkaline activators on the mechanical properties of GPC cured at ambient temperatures.

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Alkali activated materials vs geopolymers: Role of boron ...

2017-8-15  This could be as a result of a disorder in the alkaline activator balance. However, because sodium hydroxide plays a key role in activating of the slag-based materials, this strength loss was not as intense as of the fly ash-based geopolymers. Further, the role of calcium content in the raw materials cannot be overlooked.

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Effect of Alkali Activator on Compressive Strength of ...

i DECLARATION The minor project report entitled “Effect of Alkali activator on Compressive strength of geopolymer concrete using GGBS” is a record of bonafide work of Abishek Rijal (150020171 ...

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Design development of sustainable alkali-activated bricks ...

This article presents the design and construction of a prototype of an eco-friendly house built from concrete blocks produced using alkali activation technology or geopolymerization.

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Application of eco-friendly alternative activators in ...

2021-3-1  Alkali-activated materials are a new class of compounds that have been studied by several authors worldwide. Alkali-activated binders can be competitive alternatives to traditional Portland cement, especially concerning CO 2 emissions into the environment. However, in order to obtain this advantage, it is essential to use activators that were produced cleanly and sustainably, which is not the ...

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Performance of Eco-Friendly One-Part Alkali-Activated Self ...

2021-4-22  The American Concrete Institute. Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete

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Effect of Alkali Activator Ratio on Mechanical Properties ...

role in construction industries. Considering the rapid ... Effect of Alkali Activator Ratio on Mechanical Properties of GGBS based Geopolymer Concrete ... eco-friendly geopolymer concrete can be

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A Study on Self Compacting Geopolymer Concrete with an ...

Role of Alkaline Activator in Development of Eco-friendly Fly Ash Based Geo Poly... The effect of various parameters related to alkaline activator such as molar concentration of sodium hydroxide solution, mass ratio of alkaline liquid to fly-ash and the mass ratio

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Fly Ash Based Geopolymer Concrete: a Comprehensive

2021-3-19  Joshi SV, Kadu MS (2012) Role of alkaline activator in development of eco-friendly fly ash based geo polymer concrete. Int J Environ Sci Dev 3:417. CAS Article Google Scholar 71. Motorwala A, Shah V, Kammula R, Nannapaneni P, Raijiwala DB (2013) Alkali activated fly-ash based geopolymer concrete.

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Effect of Alkali Activator on Compressive Strength of ...

i DECLARATION The minor project report entitled “Effect of Alkali activator on Compressive strength of geopolymer concrete using GGBS” is a record of bonafide work of Abishek Rijal (150020171 ...

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Synthesis of Kudremukh Iron Ore Tailing Based Geopolymer ...

Role of Alkaline activator in development of eco-friendly fly ash based Geopolymer concrete. International Journal of Environmental Science and Development, 3(5), 417-421. [7].

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An eco-friendly approach to low-temperature and near ...

2021-6-22  The use of GT as an activator of hydrogen peroxide may provide a cost-effective and eco-friendly alternative approach for bleaching cotton knitted fabrics under mild conditions. References Abdel-Halim ES, Al-Deyab SS (2013) One-step bleaching process for

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Effect of Dosage of Alkaline Activator on the Properties ...

This study focused on the engineering properties of alkali-activated slag (AAS) pastes prepared by mixing an activator consisting of sodium silicate and sodium hydroxide at room temperature. The water-to-slag ratio of AAS paste was kept constant at 0.35 by mass. AAS pastes were prepared using the activator with five different silicate moduli of 1, 1.2, 1.4, 1.6, and 1.8 and three different Na ...

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Preparation of sustainable of eco-friendly MWCNT ...

2020-9-11  The main purpose of the paper is to prepare and characterize sustainable geopolymer composites with high potential to resist sulfate attack. The produced eco-friendly composites were produced from metakaolin as well blast furnace slag

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Fly Ash Based Geopolymer Concrete: a Comprehensive

2021-3-19  Joshi SV, Kadu MS (2012) Role of alkaline activator in development of eco-friendly fly ash based geo polymer concrete. Int J Environ Sci Dev 3:417. CAS Article Google Scholar 71. Motorwala A, Shah V, Kammula R, Nannapaneni P, Raijiwala DB (2013) Alkali activated fly-ash based geopolymer concrete.

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Effect of Dosage of Alkaline Activator on the Properties ...

This study focused on the engineering properties of alkali-activated slag (AAS) pastes prepared by mixing an activator consisting of sodium silicate and sodium hydroxide at room temperature. The water-to-slag ratio of AAS paste was kept constant at 0.35 by mass. AAS pastes were prepared using the activator with five different silicate moduli of 1, 1.2, 1.4, 1.6, and 1.8 and three different Na ...

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Delft University of Technology Isothermal calorimetric ...

The present study is aimed at investigating the role of alkaline activator chemistry on the reaction kinetics of AASF at early age. The binder is made of 50 wt.% blast furnace slag and 50 wt.% fly ash. Four alkaline activator silicate moduli (SiO 2 /Na 2 O ratio = 0.8, 1.0, 1.2

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Development of ultra-high-performance geopolymer

2015-5-25  Alkaline activator solution (AAS) is a combination of solutions of alkali silicates and hydroxides and distilled water. The role of AAS is to activate the geopolymeric source material (GSM) containing silicon (Si) and aluminium (Al), such as ggbs, SF and FA.

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An eco-friendly approach to low-temperature and near ...

2021-6-22  The use of GT as an activator of hydrogen peroxide may provide a cost-effective and eco-friendly alternative approach for bleaching cotton knitted fabrics under mild conditions. References Abdel-Halim ES, Al-Deyab SS (2013) One-step bleaching process for

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Research on the Formulation and Properties of a High ...

2021-6-1  The results show that the concentration of alkaline activator and slag content plays a significant role in properties of GGM and the optimum formula has been obtained. In the course of the study, the effect of concentration of alkaline activator and the content of slag on the workability and mechanical performance of GGM is different.

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Boroaluminosilicate geopolymers: role of NaOH ...

Geopolymers, cement-free eco-friendly construction materials, are formed by alkali activation of an aluminosilicate source. By changing the alkali activator from a silica-rich to boron-rich one, it may be possible to have boroaluminosilicate binders. Results

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The Characterization of Steel Slag by Alkali Activation

This paper presents a characterization analysis of alkali-activated steel slag. The effect ratio of steel slag and ferronickel slag which are the precursor materials on the compressive strength of the alkali-activated materials was investigated. The combination of sodium hydroxide solution of 15 moles concentration and sodium silicate was used as an alkaline activator.

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InfluenceoftheActivatorConcentrationandSolid/Liquid ...

2021-1-5  with increasing activator concentrations. e flexural strength (28d) is the highest when the activator concen-tration is 40%, reaching 5.45MPa (modulus of 1.5) and 5.33MPa(modulusof2),respectively.However,theflexural strength shows a sharp decrease when the activator con-centration exceeds 40%. ere is a certain relationship be-

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Mechanism of Alkali-Activated Copper-Nickel Slag Material

2020-1-22  A copper-nickel slag-based alkali-activated cementing material (CNSCM) for backfilling was prepared using copper-nickel slag as a raw material and sodium silicate (SS) as an activating agent. The effects of SS content (6%, 8%, and 10%) and curing humidity on the compressive strength of CNSCM were investigated using an electronic universal testing machine.

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