note strength study on fly ashbased geopolymer mortar

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NOTE Strength Study on Fly Ash-Based Geopolymer

Geopolymer concrete has the potential to reduce greenhouse emissions2 from the concr ete industr y by 80 %. The objecti ve of this research was to study the engineering properties and mix design of fly ash-based geopolymer mortar with sodium-based alkaline solution as the reactor. Fly ash is the aluminosilicate source material used for the

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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.

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

2018-11-30  Fly ash-based geopolymer mortar was prepared by adopting constant fly ash to sand ratio and water to solid (W/S) ratio of 1:3 and 0.30 respectively. where, ‘W’ is total water content required for preparation of geopolymer mortar including water presents in activator solution and ‘S’ is total solid content of geopolymer mortar including fly ash and solids presents in NaOH and Na 2 SiO 3 (i.e. the

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Strength and Setting Times of Low Calcium Fly Ash

2017-9-8  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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STRENGTH AND THERMAL STABILITY OF FLY ASH

2010-2-4  The results indicated that with K2SiO3/KOH ratio in the range within 0.8 to 1.5, geopolymer mortar achieved highest compressive strength. This is rather unexpected as the previous studies on low calcium fly ash-based geopolymer concrete reacted by sodium-based alkaline solution indicated that the higher the silicate to hydroxide solution ratio resulted in higher compressive strength [8, 9].

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(PDF) STRENGTH OF ALKALI ACTIVATED SLAG AND FLY

The CFBC fly ash used in this study resulted in a geopolymer matrix with good compressive strength and stability. The water demand varies with the fly ash sampling

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(PDF) Strength and Setting Times of Low Calcium Fly Ash ...

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 influence...

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Strength Development of Fly ash and GGBS Based ...

2016-4-1  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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(PDF) IRJET- Effect of loading rate and pre-loading on ...

EXPERIMENTAL WORK Fly ash-based geopolymer concrete in this study was manufactured using fly ash from local power station in North Sulawesi Province in Indonesia as the source material. Local coarse and fine aggregates normally used for making ordinary Portland cement (OPC) concrete were also utilized to make this geopolymer concrete.

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Fly Ash-Based Geopolymer Mortar Incorporating Bottom

2010-2-3  This paper presents the results of study on effect of various parameters on mechanical properties of fly ash-based geopolymer mortar with bottom ash as partial or full replacement for sand. Compressive strength of samples with 10% bottom ash (BA) was comparable to those with only sand. Further increase in bottom ash content decreased the

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STRENGTH AND THERMAL STABILITY OF FLY ASH

2010-2-4  Mixtures 4 were prepared to study the thermal stability of geopolymer mortar, especially on the compressive strength. Geopolymer mortar specimens were sent to furnace at the age of 7 th day for three hours under 400 oC, 600 oC and 800 oC respectively. From Figure 3, it is observed that geopolymer mortar specimens exposed to 400°C yielded the

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(PDF) Strength and Setting Times of Low Calcium Fly Ash ...

A study [89] was performed on fly ash-based geopolymer mortar in which the authors concluded that the compressive strength of geopolymer mortar is dependent upon the molar concentration NaOH i.e ...

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STRENGTH OF ALKALI ACTIVATED SLAG AND FLY ASH

STRENGTH OF ALKALI ACTIVATED SLAG AND FLY ASH-BASED GEOPOLYMER MORTAR Arie Wardhono, David W. Law and Tom C.K. Molyneaux School of Civil, Environmental and Chemical Engineering, RMIT University ...

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Strength Development of Fly ash and GGBS Based ...

2016-4-1  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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(PDF) Process Development of Fly Ash-Based Geopolymer ...

2021-5-29  PDF This study aimed to determine the effects of design parameters, including the liquid/solid ratio (L/S), Na2SiO3/NaOH weight ratio, and curing... Find, read and cite all

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Experimental study on full-volume fly ash geopolymer ...

2020-8-1  In this study, the concept of “full-volume fly ash (FVFA) geopolymer mortar” is proposed using FA geopolymer as a binder and sintered fly ash aggregates (FAAs) to fully replace the conventional river sand (by volume), aiming to conserve natural sand resources through further utilizing of FA.

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Studies on Fly Ash-Based Geopolymer Concrete

2017-2-20  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

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Effects of fly ash characteristics and alkaline activator ...

2018-6-30  The compressive strength of fly ash-based geopolymer mortar (FBGM) made from five different sources of fly ash was examined. The weight ratio of alkaline activator to fly ash content (AL/FA), the weight ratio of sodium silicate to sodium hydroxide (Na 2 SiO 3 /NaOH) and concentration of the NaOH were considered the main parameters. A total of 180 FBGM mixes were prepared and tested

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Experimental assessment and optimization of mix

2020-9-1  The compressive strength values for both paste and mortar are evaluated in this study. The result of the strength of fly ash-based geopolymer pastes for various NaOH molarities, SS/SH ratios, and two ages is shown in Fig. 4. Download : Download high-res image (159KB) Download : Download full-size image; Fig. 4.

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High temperature resistance of fly ash/GGBFS-based ...

2020-8-5  This study investigated the effect of elevated temperatures on the residual mechanical behaviors of geopolymer mortars with initial damage induced by mechanical load. Geopolymer mortar was prepared using different fly ash/ ground granulated blast furnace slag (GGBFS) ratios and was activated by sodium silicate and sodium hydroxide solution. The physical properties and residual

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(PDF) STRENGTH OF ALKALI ACTIVATED SLAG AND FLY

The CFBC fly ash used in this study resulted in a geopolymer matrix with good compressive strength and stability. The water demand varies with the fly ash sampling time shows the challenges in the ...

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(PDF) Strength and Setting Times of Low Calcium Fly Ash ...

A study [89] was performed on fly ash-based geopolymer mortar in which the authors concluded that the compressive strength of geopolymer mortar is dependent upon the molar concentration NaOH i.e ...

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(PDF) Strength and Setting Times of Low Calcium Fly Ash ...

This results shows that curing temperature plays an important role in the geopolymerisation process of fly ash-based geopolymer mortar. Ratio of Water-to-Geopolymer Solids, by MassMixtures 1, 2, 6 and 7 were prepared to study the effects of water-to-Geopolymer solids ratio on the compressive strength of Geopolymer mortar.

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(PDF) Process Development of Fly Ash-Based Geopolymer ...

2021-5-29  PDF This study aimed to determine the effects of design parameters, including the liquid/solid ratio (L/S), Na2SiO3/NaOH weight ratio, and curing... Find, read and cite all

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PERFORMANCE OF FLY ASH-BASED GEOPOLYMER

2020-5-4  Foam geopolymer constitutes a recent research field with high potential in the development of low toxicity thermal insulators with thermal conductivity value around 0.22 W/mK [17-19]. This paper discloses results of a study that has investigated the joint effect of several mix parameters on the properties of foam geopolymers fly ash-based.

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Strength and Porosity of Bagasse Ash-based Geopolymer

Effects of sodium silicate (Si) to NaOH ratio: The results of strength of geopolymer mortar as affected by sodium silicates (Si) to NaOH ratio (Si/OH ratio) at the curing temperature of 45, 65 and 90°C is shown in Fig. 6 and 7. The strength of mortar with Si/OH ratio of 2.5

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Fly ash-based geopolymer concrete: study of slender ...

2010-2-4  substantial increase in the compressive strength was observed. Curing for a longer period of time reduced the compressive strength. Fly ash-based geopolymer concrete In this study, geopolymer concrete was produced by utilising low-calcium (ASTM Class F) fly ash as the base material. A combination of sodium hydroxide

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Strength and Density of Geopolymer Mortar Cured at

2016-6-28  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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The Effect of Microwave Curing on the Strength

This study investigates the influence of microwave (MW) curing on the strength development of geopolymer. Since applying conventional oven heat curing makes the heat moves from outer edge to the center of specimen and leads to a non-uniform of distributing heat within the specimen, which effects on the mechanical properties of the geopolymer.

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Mechanical properties and mechanisms of fiber reinforced ...

2018-8-10  In addition, comparing the 28 d compressive strength and flexural strength of different fibers reinforced fly ash–steel slag based geopolymer mortar, it is concluded that SF-4 has the best compressive strength, SF-5 has the best flexural strength, and considering the cost of the three fibers, in general, steel fiber reinforced fly ash–steel ...

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