Journal ArticleDOI
A review: The comparison between alkali-activated slag (Si + Ca) and metakaolin (Si + Al) cements
Reads0
Chats0
TLDR
In this article, the authors compare the properties of slag and metakaolin cements, including the general properties of metakaol and slag, hydration products reaction mechanisms, and the role of Ca and Al.About:
This article is published in Cement and Concrete Research.The article was published on 2010-09-01. It has received 748 citations till now. The article focuses on the topics: Metakaolin.read more
Citations
More filters
Journal ArticleDOI
Geopolymer concrete: A review of some recent developments
TL;DR: An overview of advances in geopolymers formed by the alkaline activation of aluminosilicates is presented along with opportunities for their use in building construction as mentioned in this paper, with respect to fresh and hardened states, interfacial transition zone between aggregate and geopolymer, bond with steel reinforcing bars and resistance to elevated temperature.
Journal ArticleDOI
One-part alkali-activated materials : a review
Tero Luukkonen,Zahra Abdollahnejad,Juho Yliniemi,Paivo Kinnunen,Paivo Kinnunen,Mirja Illikainen +5 more
TL;DR: A review of one-part AAMs in terms of raw materials, activators, additives, mechanical and physical properties, curing mechanisms, hydration products, and environmental impacts can be found in this paper.
Journal ArticleDOI
Gel nanostructure in alkali-activated binders based on slag and fly ash, and effects of accelerated carbonation
Susan A. Bernal,Susan A. Bernal,John L. Provis,John L. Provis,Brant Walkley,Rackel San Nicolas,John D. Gehman,David G. Brice,Adam R. Kilcullen,Peter Duxson,Jannie S.J. van Deventer +10 more
TL;DR: In this paper, two distinct gels (C-A-S-H and N-A−S−H) are formed in activated fly ash/slag blends, and under accelerated carbonation, the N−A −S −H gel behaves comparably to fly ash-based systems, while the C-A -S -H gel is decalcified similarly to alkali activated slag.
Journal ArticleDOI
Development of an eco-friendly Ultra-High Performance Concrete (UHPC) with efficient cement and mineral admixtures uses
TL;DR: In this paper, a modified Andreasen & Andersen particle packing model is used to achieve a densely compacted cementitious matrix, and the results show that the influence of FA, ground granulated blast-furnace slag (GGBS) and limestone powder (LP) on the early hydration kinetics of UHPC is very similar during the initial five days, while the hydration rate of the blends with GGBS is mostly accelerated afterwards.
Journal ArticleDOI
Durability of alkali-activated binders: A clear advantage over Portland cement or an unproven issue?
TL;DR: A review of the literature about the durability of alkali-activated binders is presented in this article, focusing on resistance to acid attack, alkali−silica reaction, corrosion of steel reinforcement, resistance to high temperatures and to fire, and resistance to freeze-thaw.
References
More filters
Journal ArticleDOI
Geopolymer technology: the current state of the art
Peter Duxson,Ana Fernández-Jiménez,John L. Provis,Grant C. Lukey,Ángel Palomo,J.S.J. van Deventer +5 more
TL;DR: A brief history and review of geopolymer technology is presented with the aim of introducing the technology and the vast categories of materials that may be synthesized by alkali activation of aluminosilicates as mentioned in this paper.
Journal ArticleDOI
Geopolymers : inorganic polymeric new materials
TL;DR: In the last few years, technological progress has been made in the development of new materials such as "geopolymers" and new techniques, such as ''sol-gel'' as mentioned in this paper, opening up new applications and procedures and transforming ideas that have been taken for granted in inorganic chemistry.
Journal ArticleDOI
Changes in portlandite morphology with solvent composition: Atomistic simulations and experiment
TL;DR: In this article, a new analysis tool was developed to quantify the experimentally observed changes in morphology of portlandite, allowing the calculation of the relative surface energies of the crystal facets.
Journal ArticleDOI
Alkali-activated fly ashes: A cement for the future
TL;DR: In this paper, the mechanism of activation of fly ash with highly alkaline solutions is described, and the product of the reaction is an amorphous aluminosilicate gel having a structure similar to that of zeolitic precursors.
Journal ArticleDOI
The geopolymerisation of alumino-silicate minerals
Hua Xu,J.S.J. van Deventer +1 more
TL;DR: In this paper, the effect of mineral properties on the compressive strength of the synthesized geopolymer was investigated, and it was shown that a wide range of natural Al-Si minerals could serve as potential source materials for the synthesis of geopolymers.