Journal ArticleDOI
Effects of nano-silica on the strength development of geopolymer cured at room temperature
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TLDR
In this article, the incorporation of nano-silica in fly ash based geopolymer binders has been investigated in order to understand its effect on the strength and microstructural development.About:
This article is published in Construction and Building Materials.The article was published on 2015-12-30. It has received 139 citations till now. The article focuses on the topics: Geopolymer & Compressive strength.read more
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Characteristics and applications of fly ash as a sustainable construction material: A state-of-the-art review
Gang Xu,Xianming Shi +1 more
TL;DR: In this paper, a comprehensive review of relevant literature to evaluate the properties and performance of fly ash, with a particular focus on recent advances in characterization, compositional understanding, hydration mechanism, activation approaches, durability and sustainability, is presented.
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Incorporation of nano-materials in cement composite and geopolymer based paste and mortar – A review
Mathialagan Sumesh,U. Johnson Alengaram,Mohd Zamin Jumaat,Kim Hung Mo,Mohammed Fouad Alnahhal +4 more
TL;DR: In this paper, a summary of developments in partially replaced cement composite and geopolymers by industrial by-products along with different nano-materials is presented along with the health related issues on using nano materials and methods can be used to overcome the risks of exposure.
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The past and future of sustainable concrete: A critical review and new strategies on cement-based materials
Jorge de Brito,Rawaz Kurda +1 more
TL;DR: A global and extensive review is made here to provide an overall view of concrete sustainability in all possible paths and to open the minds of the readers to the vastly unexplored world of “green concrete”.
Journal ArticleDOI
Sorptivity and acid resistance of ambient-cured geopolymer mortars containing nano-silica
TL;DR: In this article, the effects of nano-silica on flowability, strength development, sorptivity and acid resistance properties of fly ash geopolymer mortars cured at 20°C were investigated.
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Effect of nano-silica on the chemical durability and mechanical performance of fly ash based geopolymer concrete
TL;DR: In this article, the effect of nano silica on the short term severe durability performance of fly ash based geopolymer concrete (GPC) specimens was investigated, and four types of GPC were produced with two types of low calcium fly ashes (FAI and FAII), and ordinary Portland cement concrete (OPC) concrete was also cast for reference.
References
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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.
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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.
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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.
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Understanding the relationship between geopolymer composition, microstructure and mechanical properties
Peter Duxson,John L. Provis,Grant C. Lukey,Seth W. Mallicoat,Waltraud M. Kriven,Jannie S.J. van Deventer +5 more
TL;DR: In this paper, a mechanistic model accounting for reduced structural reorganization and densification in the microstructure of geopolymer gels with high concentrations of soluble silicon in the activating solution has been proposed.