Journal ArticleDOI
Chemical Activation of Cementing Properties of Granulated Blast Furnace Slags
TLDR
Using CaO, NaOH and Na2CO3 as activators, the effects of dosage and combination of the activators on the cementing property of granulated blast furnace slags were investigated in this article.Abstract:
Using CaO, NaOH and Na2CO3 as activators, the effects of dosage and combination of the activators on the cementing property of granulated blast furnace slags were investigated, and the hydration products of the activated slags were detected by X-ray powder diffraction (XRD) analysis. Results indicate that CaO can be used as an effective activator for the slag samples and its optimum dosage is about 10%, but the CaO activated slags shows much lower early strength than the Portland cement. However, the early strength of the CaO activated slag can be remarkably improved by the addition of NaOH or Na2CO3. Under the addition of about 6% NaOH or Na2CO3, the overall compressive strength of the alkali activated slag is higher than a 42.5MPa Portland cement. XRD analysis revealed that the hydration products of the alkali activated slags are mainly amorphous materials, which is quite different from that of the Portland cement.read more
Citations
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Journal ArticleDOI
Preparation and performance of slag-based binders for the cementation of fine tailings
TL;DR: In this paper, slag-based binders were prepared using Portland cement clinker stimulation, early strength activator (ESA, mixture of anhydrite and triethanolamine at 97:3 (w/w)) activation and slag pulverization methods.
Patent
A binder based on activated ground granulated blast furnace slag useful for forming a concrete type material
TL;DR: In this article, a binder material useful for forming concrete type material comprises, on a dry, water and carbon dioxide free basis, a base component constituting 50-95 wt% of the binder materials and comprising ground granulated blast furnace slag, and an activator component comprising 5-50 wt%, and comprising aluminum sulfate, and a sodium hydroxide generating compound.
References
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Journal ArticleDOI
Factors affecting the strength of alkali-activated slag
TL;DR: In this article, the effect of several factors on the strength of alkali activated slags has been investigated, and the optimum range for each factor is suggested through reviewing previous work and their recent results of a full factorial range strength study.
Journal ArticleDOI
High performance cementing materials from industrial slags — a review
Caijun Shi,Jueshi Qian +1 more
TL;DR: In this article, the authors reviewed the recent achievements in the development of high performance cementing materials based on activated slags such as blast furnace slags, steel slag, copper slag and phosphorus slag.
Journal ArticleDOI
Influence of Activator on the Strength and Drying Shrinkage of Alkali-Activated Slag Mortar
TL;DR: Puertas et al. as mentioned in this paper investigated the feasibility of using and alkaline activated ground Turkish slag to produce a mortar without Portland cement (PC) by using three different activators: liquid sodium silicate (LSS), sodium hydroxide (SH) and sodium carbonate (SC) at different sodium concentrations.
Journal ArticleDOI
An experimental study on optimum usage of GGBS for the compressive strength of concrete
Ayse Oner,Serap Akyüz +1 more
TL;DR: In this paper, the optimum level of ground granulated blast-furnace slag (GGBS) was investigated on the compressive strength of concrete mixtures with different levels of GGBS.
Journal ArticleDOI
Alkali activation of Australian slag cements
TL;DR: In this article, the authors investigated the effect of alkali activation of Australian slag (AAS) using sodium silicate, sodium hydroxide, sodium carbonate, sodium phosphate, and combinations of these activators.