note strength study on fly ashbased geopolymer mortar

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NOTE Strength Study on Fly Ash-Based Geopolymer Mortar

materials and coined the term geopolymer for it. Geopolymer NOTE Strength Study on Fly Ash-Based Geopolymer Mortar V. SREEVIDYA*, R. ANURADHA and R. VENKATASUBRAMANI Civil Engineering Department, VLB Janakiammal College of Engineering and Technology Kovaipudur, Coimbatore-641 042, India *Corresponding author: E-mail: [email protected]

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(PDF) Strength study on fly ash-based geopolymer mortar

Geopolymer is a novel binding material produced from the reaction of fly ash with an alkaline solution. In geopolymer mortar, portland cement is not utilized at all. In this research, the ...

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Microstructure and strength development of fly ash-based ...

Nov 30, 2018  The present study elucidates the fluctuations in compressive strength of fly ash based geopolymer mortar using 14 M molar concentrations of alkali activator solution along with different replacement levels of nano-metakaolin (0%, 2%, 4%, 6%, 8% and 10% of fly ash).

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Strength and Setting Times of Low Calcium Fly Ash-based ...

literature. This paper presents the results of a study on the strength and setting times of fly ash-based geopolymer mortar. 2. Past Research on Geopolymer Material Geopolymer concrete is also known as Alkali-activated concrete or Inorganic polymer concrete. Many researches have been carried out to study the mechanical properties of Geopolymer.

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Properties of Fly Ash based Geopolymer Mortar

The strength of geopolymer depends on the nature of source material, chemical composition, types of activator solution, solution to fly ratio, rest period, types of curing and curing temperature. This paper presents information on fly ash based geopolymer morter. The paper covers the material and chemical proportions, rest peroid, curing ...

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STRENGTH AND THERMAL STABILITY OF FLY ASH-BASED

The 3 rd International Conference-ACF/VCA2008 145 reactor. The objective of this research was to study the engineering properties and mix design of fly ash-based geopolymer mortar with potassium ...

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Mechanical Properties and Microstructure of Class C Fly ...

Apr 09, 2013  In previous studies, compressive strength and Young’s modulus of fly ash-based geopolymer did not change significantly between paste and mortar [5,16]. However, in mortar, compressive strength depends on the strength of the geopolymeric gel, the interfacial bonding between the geopolymeric gel and aggregate and the aggregate itself .

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(PDF) Studies on fly ash-based geopolymer concrete ...

On the influence of curing time, fly ash-based geopolymer concrete cured for longer periods of time, shows an increase in its compressive strength, at least up to 48 hours (Figure 6). Figure 2: Effect of molar NaO 2-to-SiO2 ratio on compressive strength Another important characteristic of fresh concrete state is the setting time.

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Strength and Density of Geopolymer Mortar Cured at Ambient ...

Jun 28, 2016  This study focused on the effect of various binder to sand ratio on geopolymer mortar properties. Mix design of geopolymer mortar was produced using NaOH concentration of 12 molars, ratio of fly ash/alkaline activator and ratio Na 2 SiO 3 /NaOH of 2.0 and 2.5 respectively. Samples subsequently ware cured at ambient temperature.

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A Study on the Strength and Performance of Geopolymer ...

Aug 02, 2018  The present paper presents the experimental studies on the mechanical performance of Geopolymer Concrete (GPC), produced by alkali activation of fly ash and GGBS combination, at different temperatures. Being an innovative alternative material for cement concrete, GPC requires performance studies under elevated temperatures.

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DEVELOPMENT OF FLY ASH BASED GEOPOLYMER

Lloyd and Rangan [20] conducted a study on geopolymer concrete with fly ash. For their study, they used low calcium (ASTM Class F) fly ash as their base material. The observations are made with the effect of water – geopolymer solids. They concluded that geopolymer

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A comparative study on solidification/stabilization ...

A comparative study about MSWI fly ash S/S treatment with coal fly ash-based geopolymer and Portland cement was carried out in this work. Specifically, physical and chemical characteristics of MSWI fly ash, compressive strength, leachability and chemical speciation transformation of heavy metals, microstructures and morphology of S/S samples ...

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Strength Development of Fly ash and GGBS Based ...

2. Compressive strength increases around 40% to 50% from 7 days to 28 days. 3. temperature curing. Cement and Concrete ResearchHigher concentration (in terms of molarity) of sodium hydroxide solution results in higher compressive strength of fly ash-based geopolymer mortar. 4. Workability of geopolymer mortar decreases with the

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Effect of loading rate and pre-loading on compressive ...

Effect of loading rate and pre-loading on compressive strength of fly ash-based geopolymer concrete S.E. Wallah 1), ... Fly ash-based geopolymer concrete in this study was ... two mixes of fly-ash based geopolymer mortar (GPM) and one mix of ordinary Portland cement (OPC) concrete were also prepared for comparison.

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Sulfate resistance of fly ash-based geopolymer mortar: AIP ...

Sep 26, 2017  This paper presents sulfuric acid attack of fly ash-based geopolymer mortar. Precursor used in this study was fly ash, and activator used was NaOH and Na 2 SiO 3.The ratio of activator/precursor, ratio of Na 2 SiO 3 /NaOH, and ratio of fine aggregate/precursor is 0.42, 2.00, and 2.00, respectively. The molar concentration of NaOH which was used were 8, 10, 12, 14, and 16 M.

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Fly ash-based Geopolymer Concrete - Curtin University

The Report presents a comprehensive summary of the extensive studies conducted on fly ash-based geopolymer concrete. Test data are used to identify the effects of salient factors that influence the properties of the geopolymer concrete in the fresh and hardened states. These results are utilized to

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CORRELATION OF NaOH COMPOSITION AND ALKALI

development of fly ash-based geopolymer mortar strength. The study uses variations of curing, namely the type of fly ash, oven temperature curing, and room temperature curing. The results showed the development of concrete strength increased with age. Besides, the results of research that curing and type of fly ash much affect the strength of ...

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Replacement of Natural Sand with Expanded Vermiculite in ...

Replacement of Natural Sand with Expanded Vermiculite in Fly Ash-Based Geopolymer Mortars Osman Gencel 1,*, Aliakbar Gholampour 2, ... this study was to produce geopolymer mortar with lower thermal conductivity than conventional ... the compressive strength of cement mortar containing expanded vermiculite as a fine ag-

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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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Study on Compressive Strength of Geopolymer Mortar ...

This paper studies the strength development in geopolymer mortar using industrial by-products. Geopolymer is the term used to represent the binders produced by polymeric reaction of alkaline liquid with silicon and aluminium as source materials. The by-product materials considered in this study are combination of GGBFS and Fly ash.

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(PDF) Studies on fly ash-based geopolymer concrete ...

On the influence of curing time, fly ash-based geopolymer concrete cured for longer periods of time, shows an increase in its compressive strength, at least up to 48 hours (Figure 6). Figure 2: Effect of molar NaO 2-to-SiO2 ratio on compressive strength Another important characteristic of fresh concrete state is the setting time.

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Studies on Fly Ash-Based Geopolymer Concrete

useful to improve the workability of fresh fly ash-based geopolymer concrete, as well as the addition of extra water. The main parameters affecting the compressive strength of hardened fly ash-based geopolymer concrete are the curing temperature and curing time, the

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(PDF) FLY ASH BASED RUBBERIZED GEOPOLYMER CONCRETE -A ...

In geopolymer concrete, a by-product material rich in silicon and aluminum, such as low-calcium (ASTM C 618 Class F) fly ash, is chemically activated by a high-alkaline solution to form a paste ...

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A Comparative Study on Strength Improvement of Concrete

Activated Fly-Ash Based Geopolymer Concrete, International Journal of Emerging Technology and Advanced Engineering, Volume 3, Issue1,159-166. 3.Andi Arham Adam(2016) “ The effect of temperature and duration of curing on the strength of fly ash based geo-polymer mortar”, International journal of research in advent

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Strength and Density of Geopolymer Mortar Cured at Ambient ...

Jun 28, 2016  This study focused on the effect of various binder to sand ratio on geopolymer mortar properties. Mix design of geopolymer mortar was produced using NaOH concentration of 12 molars, ratio of fly ash/alkaline activator and ratio Na 2 SiO 3 /NaOH of 2.0 and 2.5 respectively. Samples subsequently ware cured at ambient temperature.

Get Price

A Study on the Strength and Performance of Geopolymer ...

Aug 02, 2018  The present paper presents the experimental studies on the mechanical performance of Geopolymer Concrete (GPC), produced by alkali activation of fly ash and GGBS combination, at different temperatures. Being an innovative alternative material for cement concrete, GPC requires performance studies under elevated temperatures.

Get Price

LOW-CALCIUM FLY ASH-BASED GEOPOLYMER CONCRETE:

work, and developed the know-how to manufacture low-calcium fly ash-based geopolymer concrete. Our research has already been published in more than 30 technical papers in various international venues. This Research Report describes the long-term properties of low-calcium fly ash-based geopolymer concrete.

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Evaluation of the Role of Cetyltrimethylammoniumbromide ...

without affecting the strength. Studies on evaluation of PC based SP on fly ash Geopolymer showed appreciable reduction in the strength around 20 to 35% with reference to original concrete. Similar such conditions are existing for geopolymer from slag and fly ash base combination. Reports on the addition of fly ash with slag improving ...

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Comparative Study on the Production Cost of Geopolymer

2011, ‘Effect of type, form and dosage of activators on strength of alkali-activated natural pozzolans, Cement and Concrete Composites, vol.33, no.2, pp.251-260. [5] Chindaprasirt PW Chalee 2014, ‘Effect of sodium hydroxide concentration on chloride penetration and steel corrosion of fly ash-based geopolymer concrete

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CORRELATION OF NaOH COMPOSITION AND ALKALI

development of fly ash-based geopolymer mortar strength. The study uses variations of curing, namely the type of fly ash, oven temperature curing, and room temperature curing. The results showed the development of concrete strength increased with age. Besides, the results of research that curing and type of fly ash much affect the strength of ...

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(PDF) The effects of replacement fly ash with diatomite in ...

The empirical equations could be expressed for the compressive strengths ( ) of geopolymer C mortars in terms of LB ratio and DE contents as follows The effects of replacement fly ash with diatomite in geopolymer mortar 433 Fig. 6 Comparison of the 7 days compressive strengths of geopolymer mortars obtained from Eq. 6 and from experiment C = 1C ...

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Geopolymer concrete for environmental protection

Extensive studies conducted on fly ash-based geopolymer concrete are presented. Salient factors that influence the properties of the geopolymer concrete in the fresh and hardened states are identified. Test data of various short-term and long-term properties of the geopolymer concrete are then presented. The paper describes the results of the tests

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Manufacture of full-scale geopolymer cement concrete ...

Carbon dioxide emissions from geopolymer cement concrete are low compared with portland cement concrete, and the binder incorporates high volumes of the recycled material fly ash. The typical strength of the resulting materials ranges from 4000 to 10,000 psi (28 to 69 MPa) depending on mixture proportions, aggregates, and curing.

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