Use of gypsum and CKD to enhance early age strength of High Volume Fly Ash (HVFA) pastes

Bondar, Dali; Coakley, Eoin

doi:10.1016/j.conbuildmat.2014.08.015

Cited by 32 publications

(9 citation statements)

References 14 publications

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“…Some commonly used techniques to assess the hydration degree of binder in concrete reported in the literature includes isothermal calorimetry and thermogravimetric analysis (TGA). Isothermal Calorimetry can conveniently monitor the hydration heat over a continuous time frame from the onset of the hydration [18,20]. It has also been used to measure heat release from cement paste with addition of FA [21,22].…”

Section: Introductionmentioning

confidence: 99%

Strength Development and Thermogravimetric Investigation of High-Volume Fly Ash Binders

et al. 2019

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To address sustainability issues by facilitating the use of high-volume fly ash (HVFA) concrete in industry, this paper investigates the early age hydration properties of HVFA binders in concrete and the correlation between hydration properties and compressive strengths of the cement pastes. A new method of calculating the chemically bound water of HVFA binders was used and validated. Fly ash (FA) types used in this study were sourced from Indonesia and Australia for comparison. The water to binder (w/b) ratio was 0.4 and FA replacement levels were 40%, 50% and 60% by weight. Isothermal calorimetry tests were conducted to study the heat of hydration which was further converted to the adiabatic temperature rise. Thermo-gravimetric analysis (TGA) was employed to explore the chemically bound water (WB) of the binders. The results showed that Australian FA pastes had higher heat of hydration, adiabatic temperature rise, WB and compressive strength compared to Indonesian FA pastes. The new method of calculating chemically bound water can be successfully applied to HVFA binders. Linear correlation could be found between the WB and compressive strength.

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Section: Introductionmentioning

confidence: 99%

Strength Development and Thermogravimetric Investigation of High-Volume Fly Ash Binders

et al. 2019

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“…Alkali activations are used to increase the pozzolanic reactivity of fly ash, and alkalis such as NaOH, Ca(OH) 2 etc. are used in these processes [18].…”

Section: Introductionmentioning

confidence: 99%

The evaluation with anova of the effect of lime admixture and thermal cure time on fly ash paste activated with sodium silicate solution

Görhan

2015

Construction and Building Materials

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“…Thus, CKD can be effective to be used as a cement replacement material to produce a sustainable concrete. Bonder et al [11] clarified that the CKD could be act as an activator in high volume fly ash concrete (HVFA). The initial setting and hardening rate of concrete at early stages were enhanced as compared to conventional concrete.…”

Section: Introductionmentioning

confidence: 99%

Properties of Self-Compacting Cementitious Composite Materials Containing Cement Kiln Dust Powder

Kadhim¹,

Atiyah²,

Salih³

2020

ETJ

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This paper aims to investigate the influence of utilization micro cement kiln dust as a sustainable materials additive in order to reduce the voids and micro cracks in the cementitious mortar materials which cause a drastic reduction in the load carrying capacity of the element. Its therefore very important to decrease the pores and enhance the mechanical strength of the cementitious composite materials. In this article, the properties of self-compacting mortar containing micro cement dust additive was experimentally assessed. Micro cement dust powder was added to the self-compacting mortar in (1, 2, 3, 4 and 5 %) percentage by weight of cement to be used as cementitious sustainable materials. The experimental results indicated that the modification and enhancement of the workability of fresh mixture and the mechanical strengths of self-compacting mortar were increased as micro cement dust additives increases. Also; the water absorption and total porosity were decreased with increases of micro cement dust powder.

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Use of gypsum and CKD to enhance early age strength of High Volume Fly Ash (HVFA) pastes

Cited by 32 publications

References 14 publications

Strength Development and Thermogravimetric Investigation of High-Volume Fly Ash Binders

Strength Development and Thermogravimetric Investigation of High-Volume Fly Ash Binders

The evaluation with anova of the effect of lime admixture and thermal cure time on fly ash paste activated with sodium silicate solution

Properties of Self-Compacting Cementitious Composite Materials Containing Cement Kiln Dust Powder

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