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A comprehensive overview about the influence of different additives on the properties of alkali-activated slag – A guide for Civil Engineer

Alaa M. Rashad
- 01 Oct 2013 - 
- Vol. 47, pp 29-55
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TLDR
A comprehensive overview of the previous works carried out on using different additives in AAS system is presented in this paper, where the authors have employed fibres, chemical admixtures, mineral admixtures and other materials as additives in aAS system aiming to modify some properties of this system.
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This article is published in Construction and Building Materials.The article was published on 2013-10-01. It has received 280 citations till now.

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Journal ArticleDOI

A comprehensive overview about the influence of different admixtures and additives on the properties of alkali-activated fly ash

Alaa M. Rashad
- 01 Jan 2014 - 
TL;DR: A comprehensive overview of the previous works carried out on using different admixtures and additives in AAFA system is presented in this paper, where the authors have employed different fibers, chemical admixtures, mineral admixture, additives and other materials in AA FA system aiming to modify special properties of this system.
Journal ArticleDOI

Development of greener alkali-activated cement: utilisation of sodium carbonate for activating slag and fly ash mixtures

TL;DR: In this paper, the effects of different factors on the strength, reaction rate, hydration products and microstructure were examined; these factors include the activator dosage, FA/slag ratio, and curing regime.
Journal ArticleDOI

Strength and drying shrinkage of reactive MgO modified alkali-activated slag paste

TL;DR: In this article, two different reactive MgOs were added at a content of 2.5-7.5 wt% of the slag, which was activated by sodium hydroxide and water-glass.
Journal ArticleDOI

High calcium Fly Ash geopolymer stabilized lateritic soil and Granulated Blast Furnace Slag blends as a pavement base material.

TL;DR: Granulated Blast Furnace Slag, which is traditionally considered as a waste material, is used as a replacement and partially reactive material in FA geopolymer pavement applications, and microstructural analysis indicated the coexistence of Calcium Silicate Hydrate (CSH) and Sodium Alumino Silicates Hydrate products in FA geopolitical stabilized LS/GBFS blends.
Journal ArticleDOI

A brief on high-volume Class F fly ash as cement replacement – A guide for Civil Engineer

TL;DR: In this paper, the authors present an overview of the previous studies carried out on the use of high volume Class F FA as a partial replacement of cement in traditional paste/mortar/concrete mixtures based on Portland cement.
References
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Journal ArticleDOI

Industrially interesting approaches to “low-CO2” cements ☆

TL;DR: In this paper, the authors discuss the practicality of replacing portland cements with alternative hydraulic cements that could result in lower total CO 2 emissions per unit volume of concrete of equivalent performance.
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

Mechanism of geopolymerization and factors influencing its development: a review

TL;DR: In this paper, the authors present the work carried out on the chemical reaction, the source materials, and the factor affecting geopolymerization, and demonstrate that certain mix compositions and reaction conditions such as Al2O3/SiO2, alkali concentration, curing temperature with curing time, water/solid ratio and pH significantly influences the formation and properties of a geopolymers.
Book

Alkali-Activated Cements and Concretes

TL;DR: Alkali-Activated Cement and Concrete as discussed by the authors is a type of Cementitious Systems that uses Alkaline Activators to activate slag cements and lime-pozzolan cements.
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.
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