Journal ArticleDOI
Influence of fly ash on the water and chloride permeability of alkali-activated slag mortars and concretes
Idawati Ismail,Idawati Ismail,Susan A. Bernal,Susan A. Bernal,John L. Provis,John L. Provis,Rackel San Nicolas,David G. Brice,Adam R. Kilcullen,Sinin Hamdan,Jannie S.J. van Deventer +10 more
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TLDR
In this article, the authors investigated the properties of slag mortar and concretes with partial fly ash substitution and showed that the chemistry of the binding gels significantly controls the mass and ionic transport in chloride-containing environments.About:
This article is published in Construction and Building Materials.The article was published on 2013-11-01. It has received 373 citations till now. The article focuses on the topics: Fly ash & Chloride.read more
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Alkali-activated materials
TL;DR: In this paper, a brief discussion of the class of cementing materials known as "alkali-activated binders" is provided, which are identified to have potential for utilization as a key component of a sustainable future global construction materials industry.
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Advances in understanding alkali-activated materials
TL;DR: Alkali activation is a highly active and rapidly developing field of activity in the global research and development community as discussed by the authors, and commercial-scale deployment of alkali-activated cements and concretes is now proceeding rapidly in multiple nations.
Journal ArticleDOI
Geopolymers and Related Alkali-Activated Materials
John L. Provis,Susan A. Bernal +1 more
TL;DR: In this paper, the synthesis of alkali-activated binders from blast furnace slag, calcined clay (metakaolin), and fly ash is discussed, including analysis of the chemical reaction mechanisms and binder phase assemblages that control the early-age and hardened properties of these materials.
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Fly ash-based geopolymer: clean production, properties and applications
Xiao Yu Zhuang,Liang Chen,Liang Chen,Sridhar Komarneni,Chun Hui Zhou,Chun Hui Zhou,Chun Hui Zhou,Dong Shen Tong,Dong Shen Tong,Hui Min Yang,Wei Hua Yu,Hao Wang +11 more
TL;DR: In this article, the authors summarized and examined the scientific advances in the preparation, properties and applications of fly ash-based geopolymer and proposed a new green cement based on fly ash.
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Mechanical, thermal insulation, thermal resistance and acoustic absorption properties of geopolymer foam concrete
TL;DR: In this paper, a fly ash with partial slag substitution was used for GFC synthesis by mechanical mixing of preformed foam, and the GFCs exhibited 28 d compressive strengths ranging from 3 to 48 MPa with demolded densities from 720 to 1600 kg/m3 (105 °C oven-dried densities ranging from 585 to 1370 kg /m3), with the different densities achieved through alteration of the foam content.
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Critical Chloride Content in Reinforced Concrete: A Review
TL;DR: In this paper, a review of the state-of-the-art in the area of critical chloride thresholding of reinforced concrete is presented, highlighting the strong need for a practice-related test method, and focusing especially on experimental procedures.
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Alkali-activated fly ash/slag cements: Strength behaviour and hydration products
TL;DR: The activation of fly ash/slag pastes with NaOH solutions has been studied in this paper, where the authors established the equations of the models describing the mechanical behaviour of these pastes as a function of the factors and levels considered.
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Modification of phase evolution in alkali-activated blast furnace slag by the incorporation of fly ash
Idawati Ismail,Idawati Ismail,Susan A. Bernal,Susan A. Bernal,John L. Provis,John L. Provis,Rackel San Nicolas,Sinin Hamdan,Jannie S.J. van Deventer +8 more
TL;DR: The microstructural evolution of alkali-activated binders based on blast furnace slag, fly ash and their blends during the first six months of sealed curing is assessed in this article.
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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.
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Technical and commercial progress in the adoption of geopolymer cement
TL;DR: In the absence of an in-service track record comparable in scale and longevity to Portland cement, research is essential to validate durability testing methodology and improve geopolymer cement technology Colloid and interface science, gel chemistry, phase formation, reaction kinetics, transport phenomena, comminution, particle packing and rheology.