... a few investigations on foam concrete’s mechanistic behavior and energy absorption properties have been published. This study examines the effects of adding fly ash (sand replacement) and polypropylene fibers to foam concrete with design densities of 1,000 and 1,500 kg/m 3 on fresh state features...

...Anfal Alaibani; Kyle A. Riding Unused Class C fly ash has been disposed of in large impoundments or landfills for many decades. Reclamation and use of this material in concrete could provide a solution to environmental challenges and alleviate shortages of fresh fly ash in some locations...

...Yu Song; Steven Zhang; Kaixin Wang; Chen Jin; Gaurav Sant; Mathieu Bauchy Fly ash from the coal combustion at electric plants is commonly used for partially replacing portland cement in concrete production. Because of the varying nature of the coal source and the different processing protocols...

...Ying Wang; Sivakumar Ramanathan; Lisa Burris; R. Douglas Hooton; Christopher R. Shearer; Prannoy Suraneni Reactivity information for a range of unconventional fly ashes is unavailable in literature. The objective of this study is to quantify the reactivity of numerous unconventional fly ashes using...

...Marie Collin; Dale P. Prentice; Ross A. Arnold; Kirk Ellison; Dante A. Simonetti; Gaurav N. Sant Hypersaline brines can be solidified and stabilized via the hydraulic and pozzolanic reactions between fly ash(es) and calcium-based additives. Although recent work has examined fly ash reactivity...

...Thomas Robl; Robert Jewell; Tristana Duvallet; Ergin Gülcan; Robert Rathbone; Anne Oberlink Class F fly ash from both fresh and stored sources, along with finely milled sand and limestone were tested by conventional strength index approaches based on ASTM C618-2019, Standard Specification for Coal...

...Daniel Benkeser; Kimberly Kurtis Regional shortages in fly ash have led to the consideration of alternative pozzolanic sources, including ponded coal combustion products (CCP). Additionally, prevention of alkali-silica reaction (ASR) expansion remains an important consideration in construction...

... 10 2021 09 06 2022 10 08 2022 geopolymer mortar fly ash ground granulated blast-furnace slag Taguchi-grey relational analysis compressive strength microstructure References Huseien   G. F. , Mirza   J. , Ismail   M. , Ghoshal   S. K. , and Hussein...

...Andaç Batur Çolak; Oğuzhan Yıldız; Fatih Çelik; Samet Mufit Bozkır In this experimental study, the workability and bleeding properties of cement-based grout mixes combined with fly ash (FA) and nano silica (n-SiO 2 ) as colloidal nanopowder were investigated, and some prediction models were...

... materials as both cement and sand replacement on shrinkage has not been studied, and this is very important in practice for saving cement and sand. In this research, cement has been replaced with fly ash up to 40 % and sand has been replaced with pond ash up to 20 % individually as well as simultaneously...

...Ghasem Pachideh; Majid Gholhaki; Amin Moshtagh The technical and economic advantages of porous concrete pavement have drawn the attention of many researchers. Accordingly, in this study, the effects of cement replacement (10 and 20 %) by pozzolanic materials such as silica fume, zeolite, fly ash...

...Richard Deschenes; Casey Jones; Eric R. Giannini; Micah Hale It is well chronicled that coal fly ash can mitigate the risk of alkali-silica reaction (ASR) in concrete structures. However, the efficacy of individual fly ashes is highly dependent on their chemical composition. Prescriptive...

...Ehsan Sadrossadat; Hakan Basarir High-performance concrete (HPC) is a class of concretes that may contain more cementitious materials other than portland cement, such as fly ash and blast furnace slag, in addition to chemical admixtures, e.g., plasticizers. Strength, durability, and rheological...

... considered in the model: incorporation of fly ash (up to 25 %) and nanosilica (up to 4 %) as well as a combination of two types of antifreeze admixtures (calcium nitrate and nitrite). The mixtures were assessed based on setting time (placement), 3- and 28-day compressive strengths (hardened properties...

... fly ash (FA)–based geopolymer mortar. The workability, water absorption, compressive strength at 3, 7, 28, and 56 days, volume change behavior, and chloride permeability of the produced FA–based geopolymer mortar were determined. The effects of RFA, the ratio of alkali liquid (AL) to FA, and different...

... (namely, ordinary portland cement (OPC) and OPC with 20 % fly ash replacement), and two types of water (tap water and seawater). The autogenous and drying shrinkage behavior of these mixtures are examined using ASTM standard test methods for 65 days. The use of seawater as mixing water increased...

.... Literature reveals that fly ash, which is typically processed by burning ground coal in power plants, can easily replace up to 30–40 % of OPC, depending on its amorphous reactivity content, particle size, and loss on ignition content. The aim of this article is to determine the optimum amount of fly ash...

... and strength, and these issues are constantly under investigation. In this study, the mechanical properties and permeability of concrete containing calcium carbonate (CaCO 3 ) nanoparticles and fly ash are investigated. For this purpose, concrete specimens with different proportions of nanoparticles and fly...

...Lincy Varghese; V. V. L. Kanta Rao; Lakshmy Parameswaran High-volume fly ash concrete, which incorporates more than 50 % fly ash as a replacement of cement in concrete, is a breakthrough development in concrete technology. Many of its properties have been investigated through decades of research...

...Taehwan Kim; Masoud Moradian; M. Tyler Ley This article studies the physical and chemical changes in two Class F fly ashes exposed to 3 % HNO 3 solution for 15 min. Automated scanning electron microscopy was used to simultaneously determine the physical and chemical properties of thousands...