Properties of inorganic polymer (geopolymer) mortars made of glass cullet

Cyr, Martin; Idir, Rachida; Poinot, Thomas

doi:10.1007/s10853-011-6107-2

Cited by 165 publications

(100 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, the main difference in the XRD characteristics between the specimens activated with only NaOH and those with NaOH/SA is the size of zeolitic peaks, which are smaller in the NaOH only activated one. This is consistent with the above discussion about the dependence of the formation of zeolite on both temperature Natural zeolite 40 7 [28] Glass cullet 40 5-10 [58] Class C fly ash 60 8.1 [26] Class F fly ash 75 7.5 [39] Class F fly ash 80 7 [27] MT 75 5 and 10 Current study…”

Section: Effect Of Powder Sodium Aluminatesupporting

confidence: 88%

Effects of activator type/concentration and curing temperature on alkali-activated binder based on copper mine tailings

2012

View full text Add to dashboard Cite

This article investigates the effects of activator type/concentration and curing temperature on alkaliactivated binder based on copper mine tailings (MT). Different alkaline activators including sodium hydroxide (NaOH), sodium silicate (SS), and sodium aluminate (SA) at different compositions and concentrations were used and four different curing temperatures, 60, 75, 90, and 120°C, were considered. Scanning electron microscopy/energydispersive X-ray spectroscopy (SEM/EDX), and X-ray diffraction (XRD) were conducted to investigate the effect of these factors on the unconfined compressive strength (UCS), microstructure, and phase composition of the binder. The results indicate that NaOH concentration and curing temperature are two important factors that affect the UCS and micro-structural properties of the alkali-activated MT binder. The optimum curing temperature, i.e., the curing temperature at the maximum UCS, depends on the NaOH concentration, lower optimum curing temperature at smaller NaOH concentration. Addition of aqueous SS to the NaOH solution can lead to strength improvement, with the highest UCS obtained at a SiO 2 /Na 2 O ratio of 1.0-1.26. Addition of powder SA to the NaOH solution profoundly delays the setting at 60°C but improves the UCS at 90°C. The SEM/EDX results show highly heterogeneous microstructure for the alkali-activated MT binder as evidenced by the variable Si/Al ratios in different phases. The XRD patterns indicate a newly formed crystalline phase, zeolite, in the 90°C-cured specimens. The results of this study provide useful information for recycling and utilization of copper MT as construction material through the geopolymerization technology.

show abstract

Section: Effect Of Powder Sodium Aluminatesupporting

confidence: 88%

Effects of activator type/concentration and curing temperature on alkali-activated binder based on copper mine tailings

2012

View full text Add to dashboard Cite

show abstract

“…Most of them are produced from industrial by-products: FA, GGBS, rice husk ash, red mud, recycled glass [50], etc. This study focusses on the three main solid precursors: MK, FA and GGBS.…”

Section: Bindersmentioning

confidence: 99%

Formulation and characterization of blended alkali-activated materials based on flash-calcined metakaolin, fly ash and GGBS

Samson

Cyr

Gao

2017

Construction and Building Materials

View full text Add to dashboard Cite

Highlights AAMs initial setting time, shrinkage, mass loss, compressive strength were studied. Low activation leads to high drying shrinkage because of important mass loss. Very low shrinkage values were found for MK-GGBS compared to the other AAMs. High early strength compressive strength was observed for MK-GGBS blends. Graphical abstract 2 AbstractStudies performed on alkali-activated materials (AAMs) in recent years reveal that they could be an alternative to ordinary Portland cement (OPC). The main precursors used are flash-calcined metakaolin (MK), fly ash (FA), and ground granulated blast furnace slag (GGBS). Usually, only one precursor is used to produce an AAM. The aims of this study were to measure and compare the performances of pure (one precursor) and blended AAMs (two precursors). Alkaline solution is added to activate the precursors and the influence of the activation rate was also investigated by changing the activator amount (15% and 25% of alkaline solution dry extract). Twenty-six different mixes were studied and are presented in a ternary representation. The mixtures were characterized in the fresh state (initial setting time) and the main properties useful for building applications (shrinkage, mass loss, and compressive strength) were recorded and analysed. In contrast to the situation in OPC systems, shrinkage and mass loss in AAMs were not directly correlated. The high shrinkage values observed for pure MK AAMs and pure GGBS AAMs were significantly reduced when they were associated in appropriate proportions. The association of MK and GGBS also proved very interesting regarding early age compressive strength.Keywords: Alkali-activated material (AAM), metakaolin (MK), fly ash (FA), ground granulated blast furnace slag (GGBS), compressive strength, shrinkage 3 IntroductionThe building sector is faced with the gradual exhaustion of natural resources and/or increasing difficulty in accessing them. 27°C, the reaction of alkali-activated GGBS-FA blend paste is dominated by the GGBS activation (dissolution and precipitation of C-A-S-H) while at 60°C the reaction is due to combined interaction of FA and GGBS, which indicates that FA has lower reactivity than GGBS under ambient conditions. There is only small interaction of fly ash and GGBS probably due to different kinetics of dissolution process and distribution of species. Puligulla et al.[39] studied GGBS-FA blend pastes. They found that the calcium that dissolves from slag significantly influences both early and late age properties. The availability of free Ca ions seems to prolong FA dissolution and enhance geopolymer gel formation. It is proposed that the hardening process is initiated by the precipitation of C-A-S-H and that rapid hardening continues due to accelerated geopolymerization. Liu et al. 5The studies mentioned above reveal that, under particular conditions, mixing two different precursors cangive very interesting results. However, these studies have usually focused on the identification of a particular property under particu...

show abstract

“…Other authors have already studied the role of different kind of glass cullet in geopolymers, such as glass containers coming from urban collection [13], bottle glass [14], fluorescent lamps [15], liquid crystal display glass [16], glasses derived from the vitrification of municipal residues [17], and waste from demolitions [18], demonstrating the feasibility of using recycled glass in geopolymers. To the authors' knowledge, no papers focused on CRT glasses were found.…”

Section: Introductionmentioning

confidence: 99%

Addition of WEEE Glass to Metakaolin-Based Geopolymeric Binder: A Cytotoxicity Study

2017

View full text Add to dashboard Cite

Waste Electrical and Electronic Equipment (WEEE) types of glass, including Cathode Ray Tube (CRT) glass, are now separately collected in European Union 28 (EU28) zone. Due to the high level of Pb and Ba in their compositions, this type of waste finds its way to the disposal. In the present research, a geopolymer matrix based on metakaolin is used to blend in fine powder panel and funnel glass from personal computer (PC) and television (TV) monitors. Such waste glass, which cannot be directed to glass melting furnaces, is safely incorporated into a geopolymer matrix. The consolidation of the geopolymeric matrix containing the waste glass was followed by pH and conductibility up to 28 days of curing. Scanning electron microscope equipped with energy dispersive spectroscopy (SEM/EDS) was used to obtain information on the microstructure of the consolidated products. Cytotoxicity tests helped the environmental evaluation of these materials.

show abstract

Properties of inorganic polymer (geopolymer) mortars made of glass cullet

Cited by 165 publications

References 49 publications

Effects of activator type/concentration and curing temperature on alkali-activated binder based on copper mine tailings

Effects of activator type/concentration and curing temperature on alkali-activated binder based on copper mine tailings

Formulation and characterization of blended alkali-activated materials based on flash-calcined metakaolin, fly ash and GGBS

Addition of WEEE Glass to Metakaolin-Based Geopolymeric Binder: A Cytotoxicity Study

Contact Info

Product

Resources

About