Isothermal calorimetry and in-situ XRD study of the NaOH activated fly ash, metakaolin and slag.
Sign Up to like & getrecommendations! Published in 2018 at "Cement and Concrete Research"
DOI: 10.1016/j.cemconres.2017.10.004
Abstract: Abstract Much is unknown about the reaction processes responsible for the formation and polycondensation of geopolymers and other alkali activated materials. In this work, isothermal calorimeter and in-situ XRD were adopted to study the heat… read more here.
Keywords: activated fly; slag; situ xrd; naoh activated ... See more keywords
Effect of fly ash microsphere on the rheology and microstructure of alkali-activated fly ash/slag pastes
Sign Up to like & getrecommendations! Published in 2018 at "Cement and Concrete Research"
DOI: 10.1016/j.cemconres.2018.04.008
Abstract: Abstract The highly viscous property of alkali silicate-activated cements is one of the critical challenges that hinder their wide application. The present study focuses on ameliorating the rheological performance of sodium silicate-activated fly ash/slag pastes… read more here.
Keywords: activated fly; rheology; ash slag; slag pastes ... See more keywords
Accurate determination of the “time-zero” of autogenous shrinkage in alkali-activated fly ash/slag system
Sign Up to like & getrecommendations! Published in 2019 at "Composites Part B: Engineering"
DOI: 10.1016/j.compositesb.2019.107367
Abstract: Abstract Autogenous shrinkage based on different “time-zero” may result in underestimation/overestimation on the cracking potential of alkali-activated fly ash/slag (AAFS). This study reports an experimental investigation on the “time-zero” of AAFS pastes characterized by different… read more here.
Keywords: alkali activated; time; autogenous shrinkage; activated fly ... See more keywords
Confined-Direct Electric Curing of NaOH-activated fly ash based brick mixtures under free drainage conditions: Part 1. Factorial experimental design
Sign Up to like & getrecommendations! Published in 2017 at "Construction and Building Materials"
DOI: 10.1016/j.conbuildmat.2017.08.135
Abstract: Abstract The utilisation of fly ash is a global concern. Under conditions of mass production and rapid turnover in automated plants, a reduction in the curing duration of alkali-activated fly ash based mixtures is sought-after.… read more here.
Keywords: activated fly; fly; ash based; confined dec ... See more keywords
Mechanisms of autogenous shrinkage of alkali-activated fly ash-slag pastes cured at ambient temperature within 24 h
Sign Up to like & getrecommendations! Published in 2018 at "Construction and Building Materials"
DOI: 10.1016/j.conbuildmat.2018.03.155
Abstract: Abstract This paper aims to provide a better understanding of autogenous shrinkage of alkali-activated fly ash-slag (AAFS) pastes at very early age ( read more here.
Keywords: activated fly; shrinkage alkali; autogenous shrinkage; ash slag ... See more keywords
The cation-dependent effects of formate salt additives on the strength and microstructure of CaO-activated fly ash binders
Sign Up to like & getrecommendations! Published in 2019 at "Construction and Building Materials"
DOI: 10.1016/j.conbuildmat.2018.11.008
Abstract: Abstract This study investigated whether three formate salt additives (Ca(HCOO)2, NaHCOO, and KHCOO) could improve the strength of a CaO-activated fly ash (FA) system. Various tests were conducted to verify the effects of the formate… read more here.
Keywords: salt additives; strength; formate salt; cao activated ... See more keywords
Composite application of naphthalene and melamine-based superplasticizers in alkali activated fly ash (AAFA)
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DOI: 10.1016/j.conbuildmat.2021.123651
Abstract: Abstract Workability could be a serious drawback for fresh alkali activated fly ash (AAFA) due to its high viscosity caused by alkaline activators. However, the reported optimum superplasticizers (SPs) only produced a slight improvement of… read more here.
Keywords: fluidity; activated fly; naphthalene melamine; melamine ... See more keywords
Mud-to-cement conversion of non-aqueous drilling fluids using alkali-activated fly ash
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Petroleum Science and Engineering"
DOI: 10.1016/j.petrol.2019.106242
Abstract: Abstract Driven by the needs for reduced waste disposal and a sustainable environment, many efforts have been made to recycle coal combustion products. Fly ash, for instance, has been well-researched and successfully re-used in various… read more here.
Keywords: alkali activated; using alkali; drilling; cement ... See more keywords
Mechanical Properties, Microstructure, and Chloride Content of Alkali-Activated Fly Ash Paste Made with Sea Water
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DOI: 10.3390/ma13061467
Abstract: The aim of the present study is to investigate the potential of sea water as a feasible alternative to produce alkali-activated fly ash material. The alkali-activated fly ash binder was fabricated by employing conventional pure… read more here.
Keywords: activated fly; water; sea water; alkali activated ... See more keywords
Behavior of Alkali-Activated Fly Ash through Underwater Placement
Sign Up to like & getrecommendations! Published in 2021 at "Materials"
DOI: 10.3390/ma14226865
Abstract: Underwater concrete is a cohesive self-consolidated concrete used for concreting underwater structures such as bridge piers. Conventional concrete used anti-washout admixture (AWA) to form a high-viscosity underwater concrete to minimise the dispersion of concrete material… read more here.
Keywords: activated fly; strength; underwater placement; placement ... See more keywords
Pressure-Induced Geopolymerization in Alkali-Activated Fly Ash
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DOI: 10.3390/su10103538
Abstract: The present study investigated geopolymerization in alkali-activated fly ash under elevated pressure conditions. The fly ash was activated using either sodium hydroxide or a combination of sodium silicate solution and sodium hydroxide, and was cured… read more here.
Keywords: activated fly; pressure induced; alkali activated; fly ash ... See more keywords