Evolution of strength, microstructure and mineralogical composition of a CKD–GGBFS binder

Chaunsali, Piyush; Peethamparan, Sulapha

doi:10.1016/j.cemconres.2010.11.010

Cited by 54 publications

(28 citation statements)

References 29 publications

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“…Another prominent feature of the microstructure of 15% CKD-stabilized soil was the presence of needle-shaped ettringite crystals (Figure 8 (e)). The presence of ettringite crystals in CKD-stabilized soil is consistent with the observations reported by , Moon et al (2009), andPeethamparan (2011). Hence, improved modulus of elasticity exhibited by CKD-stabilized soil specimens after curing could be attributed to aforementioned reaction products.…”

Section: Carnasaw Soil With 15% Ckdsupporting

confidence: 80%

See 1 more Smart Citation

Microstructural and Mineralogical Characterization of Clay Stabilized Using Calcium-Based Stabilizers

Solanki¹,

Zaman²

2012

Scanning Electron Microscopy

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Section: Carnasaw Soil With 15% Ckdsupporting

confidence: 80%

“…In a recent study, Chaunsali and Peethamparan (2011) characterized a nontraditional binding material containing cement kiln dust (CKD) and ground GGBFS. The CKD used in this study contained low free lime and high sulfate and alkali content, and proved effective in accelerating the hydration of GGBFS.…”

Section: Literature Reviewmentioning

confidence: 99%

Microstructural and Mineralogical Characterization of Clay Stabilized Using Calcium-Based Stabilizers

Solanki¹,

Zaman²

2012

Scanning Electron Microscopy

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“…Chaunsali and Peethamparan (Chaunsali and Peethamparan, 2013) investigated the hydration process of CKD -fly ash binders and found that crystalline hydration products after 1 day were ettringite, calcium hydroxide and gypsum. The same phases were also observed after 1 day in an earlier study on CKD -GGBS binders (Chaunsali and Peethamparan, 2011). In these studies, ettringite formation was identified as contributing significantly to strength development, particularly at early age.…”

Section: Effect Of Ckd Contentsupporting

confidence: 64%

The influence of physico-chemical properties of fly ash and CKD on strength generation of high-volume fly ash concrete

Sadique

Coakley

2016

Advances in Cement Research

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This paper presents a laboratory study on the use of Cement Kiln Dust (CKD) as an activator of fly ash when used in high volumes within concrete. Two separate batches of fly ash and CKD were tested to assess the effect of material variability on binder properties and compressive strength gain. Ternary blends of fly ash (55% -65%), CEM 1 (30%) and CKD (5% -15%) and quaternary blends that included moderate amounts (15% -18.5%) of Ground Granulated Blast-Furnace Slag (GGBS) were prepared.Physico-chemical properties of individual binder materials were compared and concrete compressive strength was measured at 2 days, 7 days and 28 days. Ternary blends of 60% fly ash, 30% cement and 10% CKD resulted in moderate early age and 28 day strength and addition of GGBS enhanced strength significantly due to increased ettringite formation. Particle fineness, water demand and LOI content of fly ash and CaO and SO3 content of CKD were found to be the main physico-chemical factors that influence compressive strength gain.

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“…Similar hydration kinetics was reported (Konsta-Gdoutos and Shah 2003) during activating GGBS with arcanite containing cement kiln dust (CKD). Like FA2, the CKD with high sulphate and alkali content was found to be effective for dissolution of GGBS and show significant early and later strength development by formation of ettringite and C-S-H (Chaunsali and Peethamparan 2011).…”

Section: Evaluating Performance Of Hsc-3 Upon Hydrationmentioning

confidence: 99%

Hydration Kinetics of a Low Carbon Cementitious Material Produced by Physico-Chemical Activation of High Calcium Fly Ash

Sadique

Al-Nageim

2012

ACT

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The hydration kinetics of a ternary system containing high lime fly ash activated with alkali sulphate rich fly ash has been studied. The effect of low intensive mechanical activation of fly ashes influencing the particle packing and water demand was undertaken. A ternary blend of fly ashes and silica fume was found to show improved bond strength between the binder paste and aggregate rather than the binder paste matrix with progressive hydration after 90 days. Analogous physico-chemical properties of the developed ternary blend with the control cement were revealed. Quick dissolution of K + , Na + and SO 4 2-into the liquid phase as well as consumption of Ca 2+ by silica fume in a high-pH environment were the predominant factors for producing a dense non-expansive hydration product by the ternary blend.

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Evolution of strength, microstructure and mineralogical composition of a CKD–GGBFS binder

Cited by 54 publications

References 29 publications

Microstructural and Mineralogical Characterization of Clay Stabilized Using Calcium-Based Stabilizers

Microstructural and Mineralogical Characterization of Clay Stabilized Using Calcium-Based Stabilizers

The influence of physico-chemical properties of fly ash and CKD on strength generation of high-volume fly ash concrete

Hydration Kinetics of a Low Carbon Cementitious Material Produced by Physico-Chemical Activation of High Calcium Fly Ash

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