A brief on high-volume Class F fly ash as cement replacement – A guide for Civil Engineer
TLDR
In this paper, the authors present an overview of the previous studies carried out on the use of high volume Class F FA as a partial replacement of cement in traditional paste/mortar/concrete mixtures based on Portland cement.Abstract:
Disposal of fly ash (FA) resulting from the combustion of coal-fired electric power stations is one of the major environmental challenges. This challenge continues to increase with increasing the amount of FA and decreasing the capacity of landfill space. Therefore, studies have been carried out to re-use high-volumes of fly ash (HVFA) as cement replacement in building materials. This paper presents an overview of the previous studies carried out on the use of high volume Class F FA as a partial replacement of cement in traditional paste/mortar/concrete mixtures based on Portland cement (PC). Fresh properties, mechanical properties, abrasion resistance, thermal properties, drying shrinkage, porosity, water absorption, sorptivity, chemical resistance, carbonation resistance and electrical resistivity of paste/mortar/concrete mixtures containing HVFA (⩾45%) as cement replacement have been reviewed. Furthermore, additives used to improve some properties of HVFA system have been reviewed.read more
Citations
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Effect of incorporation of high volume of recycled concrete aggregates and fly ash on the strength and global warming potential of concrete
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Geopolymer, green alkali activated cementitious material: Synthesis, applications and challenges
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TL;DR: In this paper, the authors present an overview on the progress of geopolymers research and development in recent decades, focusing on the applications progress of the geopolymer as green civil engineering materials, rapidly repair and dealing with poisonous and radioactive waste materials, coatings, novel ceramic materials, functional composite, three-dimensional printing materials and biological materials, etc.
References
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Book
Concrete: Microstructure, Properties, and Materials
P.K. Mehta,Paulo J.M. Monteiro +1 more
TL;DR: Concrete: Microstructure, Properties, and Materials as mentioned in this paper provides complete details on the microstructure-property relationship approach to provide scientific explanation for the strength and durability of concrete.
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A review on the utilization of fly ash
TL;DR: In this article, the utilization of fly ash in construction, as a low-cost adsorbent for the removal of organic compounds, flue gas and metals, light weight aggregate, mine back fill, road sub-base, and zeolite synthesis is discussed.
Book
Concrete : structure, properties, and materials
TL;DR: In this article, the authors introduce concrete strength, dimensional stability durability, and early-age properties of hardened concrete, including hydraulic cements aggregates admixtures proportioning normal-weight concrete mixtures.
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Geopolymeric materials prepared using Class F fly ash and elevated temperature curing
TL;DR: In this article, the effect of storing at room temperature before the application of heat on phase composition and phase composition was studied using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and SEM.
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Microstructure Development of Alkali-Activated Fly Ash Cement: A Descriptive Model
TL;DR: In this paper, the microscopic study of a set of alkali-activated and thermally cured fly ash samples enabled the authors to establish a descriptive model for the microstructural development of fly ash-based cementitious geopolymers.