Effect of C3S content of clinker on properties of fly ash cement concrete

Kipkemboi, Benson; Zhao, Teng; Miyazawa, S.; Sakai, Etsuo; Nito, Nobukazu; Hirao, Hiroshi

doi:10.1016/j.conbuildmat.2019.117840

Cited by 33 publications

(12 citation statements)

References 4 publications

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“…As shown in Figure 13 , the cumulative heat of cement–FA binder increased by adding LM. It is because the high alkalinity of LM corroded the surface of FA, thus exposing SiO 2 and accelerating the hydration process [ 29 ].…”

Section: Resultsmentioning

confidence: 99%

“…As shown in Figure 13, the cumulative heat of cement-FA binder increased by adding LM. It is because the high alkalinity of LM corroded the surface of FA, thus exposing SiO 2 and accelerating the hydration process [29]. On the other hand, for a given dosage of LM-FA, the cumulative heat of binder in the early hydration stage increased with LM/FA ratio increasing.…”

Section: Calorimetry and Microstructure Characterizationmentioning

confidence: 99%

“…The replacement of cement with FA is generally less than 50%. For the foamed concrete containing high volume FA, a series of problems such as low early strength and easy cracking due to low reactivity of FA have been reported [ 11 , 27 , 28 , 29 ]. Therefore, it is necessary to enhance the early reaction in the high volume FA–cement system [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

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A Feasibility Study of Low Cement Content Foamed Concrete Using High Volume of Waste Lime Mud and Fly Ash for Road Embankment

Li¹,

Yuan

Fa-liang

et al. 2021

Materials

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This paper aims to study the feasibility of low cement content foamed concrete using waste lime mud (LM) and fly ash (FA) as mineral additives. The LM/FA ratio was first optimized based on the compressive strength. Isothermal calorimetry test, ESEM, and XRD were used to investigate the role of LM during hydration. Afterward, the optimized LM/FA ratio (1/5) was used to design foamed concrete with various wet densities (600, 700, 800 and 900 kg/m3) and LM–FA dosages (0%, 50%, 60%, 70% and 80%). Flowability measurements and mechanical measurements including compressive strength, flexural strength, splitting strength, elastic modulus, and California bearing ratio were conducted. The results show that the foamed concretes have excellent workability and stability with flowability within 170 and 190 mm. The high alkalinity of LM accelerated the hydration of FA, thereby increasing the early strength. The significant power functions were fitted for the relationships between flexural/splitting and compressive strength with all correlation coefficients (R2) larger with 0.95. The mechanical properties of the foamed concrete increased with the density increasing or LM–FA dosage decreasing. The compressive strength, tensile strength, CBR of all prepared foamed concretes were higher than the minimum requirements of 0.8 and 0.15 MPa and 8%, respectively in the standard.

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Section: Resultsmentioning

confidence: 99%

Section: Calorimetry and Microstructure Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Feasibility Study of Low Cement Content Foamed Concrete Using High Volume of Waste Lime Mud and Fly Ash for Road Embankment

Li¹,

Yuan

Fa-liang

et al. 2021

Materials

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“…Early-age strength of CFA cement concrete was improved through increasing tricalcium silicate (C 3 S) content (up to 72%) in cement (Kipkemboi et al, 2020). Three-dimensional finite element method (3D-FEM) thermal stress analysis model and thermal cracking resistance simulation revealed the development of concrete strength.…”

Section: Annual Literature Reviewmentioning

confidence: 99%

Power production waste

Cai

Zhang

Liang

et al. 2020

Water Environment Research

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The storage of large amount of power production waste occupies huge land resource; moreover, the stored or discarded waste may pollute the water environment through changing the water pH, releasing the trace and toxic elements even radioactive elements, and so on by leachate. Therefore, the recycling and disposal of power production waste are important and necessary. This paper reviews the research literatures published in 2019 on power generation waste from coal-fired and nuclear power plants, mainly including the recycling of fly ash and flue gas desulfurization gypsum in construction industry and environmental application, the recovery and immobilization of different metals from coal combustion products and selective catalytic reduction catalysts, and the treatment and disposal of radioactive elements from nuclear power plants.

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“…Fly ash can be repurposed in a number of ways. For many years it has been used as a value-added mineral admixture in cement, composite binders, and concrete [ 25 ], as well as in road construction, mine remediation, manufacture of mineral wool, metal recovery, and as a replacer for aggregates [ 24 , 26 ]. However, huge amounts of ash are still being stored/deposited and contribute to environmental pollution through foul air emissions, smog-forming dust, and leachate, through which trace elements are released into groundwater [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Applicability of Ash Wastes for Reducing Trace Element Content in Zea mays L. Grown in Eco-Diesel Contaminated Soil

et al. 2022

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Among the large group of xenobiotics released into the environment, petroleum derivatives are particularly dangerous, especially given continuing industrial development and the rising demand for fuel. As increasing amounts of fly ash and sewage sludge are released, it becomes necessary to explore new methods of reusing these types of waste as reclamation agents or nutrient sources. The present study examined how soil contamination with Eco-Diesel oil (0; 10; 20 cm3 kg−1 soil) affected the trace-element content in the aerial parts of maize. Coal and sludge ashes were used as reclamation agents. Our study revealed that diesel oil strongly affected the trace-element content in the aerial parts of maize. In the non-amended group, Eco-Diesel oil contamination led to higher accumulation of the trace elements in maize (with the exception of Pb and Ni), with Cu and Mn content increasing the most. The ashes incorporated into the soil performed inconsistently as a reclamation agent. Overall, the amendment reduced Mn and Fe in the aerial parts of maize while increasing average Cd and Cu levels. No significant effect was noted for the other elements.

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Effect of C3S content of clinker on properties of fly ash cement concrete

Cited by 33 publications

References 4 publications

A Feasibility Study of Low Cement Content Foamed Concrete Using High Volume of Waste Lime Mud and Fly Ash for Road Embankment

A Feasibility Study of Low Cement Content Foamed Concrete Using High Volume of Waste Lime Mud and Fly Ash for Road Embankment

Power production waste

Applicability of Ash Wastes for Reducing Trace Element Content in Zea mays L. Grown in Eco-Diesel Contaminated Soil

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