Journal ArticleDOI
Characterization of alkali activated slag–fly ash blends containing nano-silica
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TLDR
In this paper, the effects of nano-silica incorporation on an eco-friendly alkali activated slag-fly ash blends were investigated, and the results indicated that as the nano silica content increases, the slump flow is significantly reduced, and reaction process is slightly retarded according to the setting time and isothermal calorimetry results.About:
This article is published in Construction and Building Materials.The article was published on 2015-11-15. It has received 151 citations till now. The article focuses on the topics: Compressive strength & Fly ash.read more
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Geopolymers in construction - recent developments
TL;DR: A comprehensive overview of past studies on geopolymers synthesised from various precursors, the factors affecting geopolymerisation process, their microstructural characteristics as well as mechanical, chemical, thermal and environmental properties of geopopolymers is presented in this paper.
Journal ArticleDOI
The effects of nano particles on freeze and thaw resistance of alkali-activated slag concrete
TL;DR: In this article, the effect of nanoparticles including nano-silica, nano-alumina, and nano-clay on the resistance of AAS concrete against freeze and thaw cycles was investigated.
Journal ArticleDOI
Recycled aggregate high calcium fly ash geopolymer concrete with inclusion of OPC and nano-SiO2
TL;DR: In this paper, the use of ordinary Portland cement (OPC) and nano-SiO2 (nS) to improve the mechanical and durability properties of recycled aggregate geopolymer concrete (RAGC) was evaluated.
Journal ArticleDOI
Improvement in Fresh, Mechanical and Microstructural Properties of Fly Ash- Blast Furnace Slag Based Geopolymer Concrete By Addition of Nano and Micro Silica
Syed Mohammed Mustakim,Shaswat Kumar Das,Jyotirmoy Mishra,Asif Aftab,Thamer Alomayri,Hasan Assaedi,Cyriaque Rodrigue Kaze +6 more
TL;DR: In this paper, the effect of nano-silica and silica fume (SF) on workability, setting time, compressive strength and microstructural properties of fly ash-ground granulated blast furnace slag (FA-GGBFS) based geopolymer concrete (GPC) is investigated.
Journal ArticleDOI
Development of high strength one-part geopolymer mortar using sodium metasilicate
TL;DR: In this article, the synthetic sodium metasilicate pentahydrate was compared against water and a hybrid sodium silicate and sodium hydroxide activator solution, and it was found that the solid activator outperformed the liquid activator as a part of water remained chemically bound to the undissolved particles, thus reducing the apparent water to binder ratio.
References
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Journal ArticleDOI
New cements for the 21st century: The pursuit of an alternative to Portland cement
TL;DR: Aluminosilicate-based alkaline cements have been classified into five categories as discussed by the authors, and the key advances made in the understanding of synthetic gels are discussed, which ultimately finds hybrid cements to be technologically viable materials for contemporary construction.
Journal ArticleDOI
Influence of nano-SiO2 addition on properties of hardened cement paste as compared with silica fume
TL;DR: In this paper, the influence of nano-SiO 2 (NS) addition on properties of hardened cement paste (hcp) as compared with silica fume (SF) has been studied through measurement of compressive and bond strengths of hcp, and by XRD and SEM analysis.
Journal ArticleDOI
Structure of Calcium Silicate Hydrate (C‐S‐H): Near‐, Mid‐, and Far‐Infrared Spectroscopy
TL;DR: In this paper, the mid-, near-, and far-infrared (IR) spectra of synthetic, single-phase calcium silicate hydrates (C-S-H) with Ca/Si ratios (C/S) of 0.41-1.2 were analyzed.
Journal ArticleDOI
The coexistence of geopolymeric gel and calcium silicate hydrate at the early stage of alkaline activation
TL;DR: In this paper, the effects of ground granulated blast furnace slag (GGBFS) on the microstructure and mechanical properties of metakaolin (MK) based geopolymers were studied.
Journal ArticleDOI
Characteristics of cement mortar with nano-SiO2 particles
TL;DR: In this paper, the properties of cement mortars with nano-SiO 2 were experimentally studied, and the results showed that the compressive strength of mortars containing nano SiO 2 particles was significantly higher than those of those containing silica fume at 7 and 28 days.
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